CN109180063A - A kind of cement mortar additive and its application method - Google Patents
A kind of cement mortar additive and its application method Download PDFInfo
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- CN109180063A CN109180063A CN201811345525.3A CN201811345525A CN109180063A CN 109180063 A CN109180063 A CN 109180063A CN 201811345525 A CN201811345525 A CN 201811345525A CN 109180063 A CN109180063 A CN 109180063A
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- retarder
- cement
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- 239000011083 cement mortar Substances 0.000 title claims abstract description 139
- 239000000654 additive Substances 0.000 title claims abstract description 76
- 230000000996 additive effect Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000002562 thickening agent Substances 0.000 claims abstract description 22
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 17
- 229910052710 silicon Inorganic materials 0.000 claims description 17
- 239000010703 silicon Substances 0.000 claims description 17
- 239000004568 cement Substances 0.000 claims description 15
- 239000004816 latex Substances 0.000 claims description 13
- 229920000126 latex Polymers 0.000 claims description 13
- 229920005646 polycarboxylate Polymers 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000011398 Portland cement Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 150000001720 carbohydrates Chemical class 0.000 claims description 2
- 238000010348 incorporation Methods 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 150000003751 zinc Chemical class 0.000 claims description 2
- 238000001802 infusion Methods 0.000 claims 1
- 244000005700 microbiome Species 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 241000894007 species Species 0.000 claims 1
- 230000002742 anti-folding effect Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 230000006835 compression Effects 0.000 description 13
- 239000012615 aggregate Substances 0.000 description 12
- 235000019832 sodium triphosphate Nutrition 0.000 description 11
- 229930006000 Sucrose Natural products 0.000 description 10
- 230000000813 microbial effect Effects 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 10
- 239000005720 sucrose Substances 0.000 description 10
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 9
- 239000004570 mortar (masonry) Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 description 2
- 229920002310 Welan gum Polymers 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229940050410 gluconate Drugs 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000037230 mobility Effects 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000185 sucrose group Chemical group 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of cement mortar additives, are grouped as by the group that following weight matches: 370~410 parts of water-reducing agent, 20~40 parts of defoaming agent, 300~350 parts of the first retarder, 60~70 parts of the second retarder, 10~15 parts of thickener, 100~120 parts of plastic expansion agent, 200~250 parts of rubber powder.Cement mortar additive of the invention can effectively improve mobility, water-retaining property, caking property, splitting resistance and the intensity of cement mortar, can compensate the self-constriction of cement mortar plastic stage, can be directly used for preparing injecting paste material, grouting material and concrete etc..
Description
Technical field
The present invention relates to building material technical field, in particular to a kind of cement mortar additive and its application method.
Background technique
Conventional cement mortar is generally mixed and stirred by cement, fine aggregate and water and is formed, and in construction projects, is chiefly used in basis and wall
Body masonry, indoor exterior rendering etc..It is public higher and higher to the performance requirement of cement mortar with the fast development of building trade.
In order to make up the deficiency of conventional cement mortar performance, the advantage of cement mortar is given full play to, is added usually in cement mortar each
Kind admixture or additive carry out performance optimization, improve workability, mechanical property and endurance quality of cement mortar etc..From current
From the point of view of market, existing cement mortar additive application range is relatively limited to, unstable quality, and the fluctuation of volume range is larger and sensitive
Property is poor.For the high-performance micro-expansion cement mortar of big fluidised form, common mortar additive not can effectively solve cement bonded sand
The applicability of slurry, phenomena such as easily causing cement mortar bleeding, isolate, and contraction is larger, seriously affects the use effect of cement mortar
Fruit does not embody the technical characterstic of high-performance water cement mortar completely.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of the prior art, providing one kind has cement mortar
The cement mortar additive of the technical characterstics such as high fluidity, high intensity, high-durability, micro-expansibility, strong cohesive property energy.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of cement mortar additive is grouped as by the group that following weight matches:
370~410 parts of water-reducing agent, 20~40 parts of defoaming agent, 300~350 parts of the first retarder, 60~70 parts of the second retarder,
10~15 parts of thickener, 100~120 parts of plastic expansion agent, 200~250 parts of rubber powder.
Cement granules in Water-reducing Admixtures To Cements mortar have peptizaiton, can improve its workability, reduce unit consumption of water,
Improve the mobility of cement mortar, moreover it is possible to reduce unit cement consumption, delay cement mortar setting time；Defoaming agent is able to suppress
Foam generates, or eliminates the foam generated, improves cement mortar compactness, increases strength of cement mortar；Retarder can prolong
The hydration and hardening time of long cement, make newly to mix cement mortar and keep plasticity in a long time, newly mixes cement mortar to adjust
Setting time；The viscosity of thickener adjustable water cement mortar improves the mobility and intensity of cement mortar；Plastic expansion agent
Cement mortar can be made to generate microdilatancy in the plastic stage, to compensate the self-constriction of cement mortar plastic stage；Rubber powder can make water
Cement mortar adhesive property with higher and splitting resistance.
Cement mortar additive of the invention can make cement mortar in the case where no bleeding, isolation, out machine fluidity
Reach 400mm or so, and reaches the mobility of gravity flowing levelling mortar.Cement mortar 90min fluidity remain to be maintained at 340mm with
On, and reach in the plastic stage dilatancy of certain codomain.When cement mortar additive of the invention is used to prepare cement mortar,
For cement mortar while 90min fluidity reaches 320mm or more, the anti-folding of 12h, compression strength can reach 1.5MPa and 5.0MPa
More than, anti-folding, compression strength can reach 5.0MPa and 18.0MPa or more for 24 hours, and the anti-folding of 28d, compression strength can reach 10.5MPa
With 66.0MPa or more.Cement mortar additive of the invention can make cement mortar good with concrete binding, with concrete
7d, 28d flexural strength ratio in conjunction with after reaches 110% and 105% or more, interfacial separation does not occur in combination with face.The present invention can
It is directly used in and prepares injecting paste material, grouting material, concrete etc..
Preferably, above-mentioned cement mortar additive is grouped as by the group that following weight matches:
380~400 parts of water-reducing agent, 25~35 parts of defoaming agent, 320~330 parts of the first retarder, 60~70 parts of the second retarder,
10~15 parts of thickener, 105~115 parts of plastic expansion agent, 220~230 parts of rubber powder.
More electedly, above-mentioned cement mortar additive is grouped as by the group that following weight matches:
390 parts of water-reducing agent, 30 parts of defoaming agent, 325 parts of the first retarder, 65 parts of the second retarder, 15 parts of thickener, plastic expansion
110 parts of agent, 225 parts of rubber powder.
Preferably, the water-reducing agent is high-performance water reducing agent.The high-performance water reducing agent water-reducing rate is not less than 25%, mainly
For poly carboxylic acid series water reducer.
Further, the water-reducing agent is polycarboxylate series high-performance dehydragent.Illustratively, the water-reducing agent is P29
Polycarboxylate series high-performance dehydragent.
Preferably, the defoaming agent is one of mineral oil defoaming agent, organic silicon defoaming agent, polyethers defoaming agent
Or several composition.
Preferably, the defoaming agent is organic silicon defoaming agent.Illustratively, the defoaming agent is P803 defoaming agent.
Preferably, first retarder is carbohydrate retarder.Illustratively, first retarder can be with are as follows: sugar calcium,
Gluconate, sucrose etc..
Preferably, first retarder is sucrose.
Preferably, second retarder is the composition of one or both of zinc salt and phosphate.
Preferably, second retarder is phosphate, and illustratively, second retarder is sodium tripolyphosphate slow setting
Agent.
Preferably, the thickener is microbial polymer class thickener.Illustratively, the thickener is welan gum increasing
Thick dose.
Preferably, the rubber powder is redispersable latex powder.Illustratively, the rubber powder is 60W redispersable latex powder.
Above-mentioned cement mortar additive the preparation method is as follows: successively weigh each component by weight ratio, be uniformly mixed to get
Cement mortar additive.
The present invention also provides the application methods of above-mentioned cement mortar additive: the side of mixing other than the cement mortar additive
Cement mortar or concrete is added in formula, and incorporation is 1.0%~1.2% of cementitious material weight in cement mortar or concrete.
The present invention also provides a kind of cement mortar, the cement mortar is made using cement mortar additive above-mentioned,
It is grouped as by the group that following weight matches:
470~490 parts of ordinary portland cement, 55~75 parts of fast gravity die cement, 35~45 parts of silicon ash, 410~430 parts of aggregate,
180~200 parts of water, 6~7 parts of cement mortar additive.
Preferably, the cement mortar is grouped as by the group that following weight matches:
480 parts of ordinary portland cement, 65 parts of fast gravity die cement, 40 parts of silicon ash, 420 parts of aggregate, 190 parts of water, outside cement mortar
Add 6~7 parts of agent.
Compared with prior art, beneficial effects of the present invention:
Volume of the present invention by each chemical addition agent in optimization cement mortar additive, the flowing generally existing to cement mortar
Property poor, poor water retention property, early-age shrinkage is big, early strength is relatively low, with concrete (mortar) caking property it is poor the problems such as made into
The improvement of one step, specific as follows:
1, cement mortar additive of the invention can effectively improve the rheological characteristic of cement mortar, greatly improve the flowing of cement mortar
Degree, and cement mortar can be made to keep upper flow regime performance for a long time within certain time, hence it is evident that improves cement mortar uses model
It encloses and operability, can be used as filler and repairing and leak stopping etc. are carried out to works.
2, cement mortar additive of the invention and cementitious material adaptability are preferable, and sensibility is poor, mixes by a certain percentage
Phenomena such as fashionable, for cement mortar while keeping high fluidity, water-retaining property is preferable, does not find bleeding, isolation.In addition, mixed with
The cement mortar separating degree of the additive is smaller, solves common upper flow regime cement mortar layering, grabs phenomena such as bottom.
3, cement mortar additive of the invention can compensate the self-constriction of cement mortar, and make cement mortar in plasticity rank
Section has certain micro-expansibility, continues to keep micro-expansibility energy after condensation hardening.
4, cement mortar additive of the invention can make cement mortar adhesive property with higher and splitting resistance.When with
When concrete structure repairing, cement mortar can be made to be well combined with concrete, improve the globality of concrete structure.
5, cement mortar additive energy reinforced cement mortar intensity of the invention, under the premise of meeting high rheological variation, energy
The anti-folding of cement mortar 12h, compression strength is set to can reach 1.5MPa and 5.0MPa or more, anti-folding, compression strength can reach for 24 hours
The anti-folding of 5.0MPa and 18.0MPa or more, 28d, compression strength can reach 10.5MPa and 66.0MPa or more.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Raw material and instrument used in the embodiment of the present invention are all known product, are obtained by purchase commercial product.
A kind of cement mortar additive of embodiment 1
It is grouped as by the group that following weight matches:
390 parts of polycarboxylate series high-performance dehydragent, 30 parts of organic silicon defoaming agent, 325 parts of sucrose, sodium tripolyphosphate retarder
65 parts, 15 parts of microbial polymer class thickener, 110 parts of plastic expansion agent, 225 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 2
It is grouped as by the group that following weight matches:
370 parts of P29 polycarboxylate series high-performance dehydragent, 20 parts of P803 defoaming agent, 300 parts of sucrose retarder, sodium tripolyphosphate
60 parts of retarder, 10 parts of welan gum thickener, 100 parts of XD shape swelling agent, 200 parts of 60W redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 3
It is grouped as by the group that following weight matches:
410 parts of polycarboxylate based water reducer, 40 parts of mineral oil defoaming agent, 350 parts of sugar calcium, 70 parts of sodium tripolyphosphate retarder,
15 parts of microbial polymer class thickener, 120 parts of plastic expansion agent, 250 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 4
It is grouped as by the group that following weight matches:
380 parts of polycarboxylate based water reducer, 25 parts of polyethers defoaming agent, 320 parts of gluconate, sodium tripolyphosphate retarder)
60 parts, 10 parts of microbial polymer class thickener, 105 parts of plastic expansion agent, 220 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 5
It is grouped as by the group that following weight matches:
400 parts of polycarboxylate based water reducer, 35 parts of organic silicon defoaming agent, 330 parts of sucrose retarder, sodium tripolyphosphate retarder
70 parts, 15 parts of microbial polymer class thickener, 115 parts of plastic expansion agent, 230 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 6
It is grouped as by the group that following weight matches:
375 parts of polycarboxylate based water reducer, 25 parts of organic silicon defoaming agent, 310 parts of sucrose retarder, sodium tripolyphosphate retarder
60 parts, 10 parts of microbial polymer class thickener, 105 parts of plastic expansion agent, 210 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 7
It is grouped as by the group that following weight matches:
405 parts of polycarboxylate series high-performance dehydragent, 35 parts of organic silicon defoaming agent, 330 parts of sucrose retarder, sodium tripolyphosphate
70 parts of retarder, 15 parts of microbial polymer class thickener, 115 parts of plastic expansion agent, 240 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 8
It is grouped as by the group that following weight matches:
385 parts of polycarboxylate series high-performance dehydragent, 27 parts of organic silicon defoaming agent, 323 parts of sucrose retarder, sodium tripolyphosphate
62 parts of retarder, 15 parts of microbial polymer class thickener, 108 parts of plastic expansion agent, 222 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
A kind of cement mortar additive of embodiment 9
It is grouped as by the group that following weight matches:
395 parts of polycarboxylate series high-performance dehydragent, 33 parts of organic silicon defoaming agent, 327 parts of sucrose retarder, sodium tripolyphosphate
68 parts of retarder, 15 parts of microbial polymer class thickener, 112 parts of plastic expansion agent, 228 parts of redispersable latex powder.
Each component is weighed according to above-mentioned weight proportion, is uniformly mixed up to cement mortar additive.
Illustrate beneficial effects of the present invention below by way of experimental example:
Influence of the cement mortar additive of the present invention of experimental example 1 to cement mortar performance
Prepare two groups of cement mortar.
Group one: mixing cement mortar additive described in embodiment 1, and cement mortar raw material and proportion are as follows: ordinary silicon
480 parts of acid salt cement, 65 parts of fast gravity die cement, 40 parts of silicon ash, 420 parts of aggregate, 190 parts of water, 6 parts of cement mortar additive.Match
During system, after each raw material are added according to the sequence of water, cementitious material, additive, aggregate, or by cementitious material, additional
After agent and aggregate mixing directly plus after water, 3min is mixed slowly using cement mortar mixer or vertical mortar mixer.
Group two: not adding any cement mortar additive, and cement mortar raw material and proportion are as follows: ordinary portland cement
886kg/m3, fast gravity die cement 144kg/m3, silicon ash 76kg/m3, aggregate 801kg/m3, water 362kg/m3.In process for preparation, each original
After material is added according to the sequence of water, cementitious material, additive, aggregate, or will be after the mixing of cementitious material, additive and aggregate
Directly plus after water, 3min is mixed slowly using cement mortar mixer or vertical mortar mixer.
The mobility and anti-folding, compression strength of two groups of cement mortar are tested respectively.Experimental result is shown in Table 1.
Influence of the cement mortar additive of the present invention of table 1 to cement mortar performance
In the case where not mixing additive, ratio of water to material when this experimental formula cement mortar can not be such that cement mortar forms, phase
Ying Di, the cement mortar that group two is prepared is almost without fluidity.
2 different component of experimental example matches influence of the additive to cement mortar performance
1. preparing cement mortar additive
According to component proportion shown in table 2 weigh polycarboxylate series high-performance dehydragent, organic silicon defoaming agent, sucrose retarder,
Sodium tripolyphosphate retarder, microbial polymer class thickener, plastic expansion agent, redispersable latex powder, prepare multiple groups respectively
Cement mortar additive.
2 each group cement mortar additive component proportion of table
2. preparing cement mortar
The cement mortar additive of preparation is prepared into multiple groups cement mortar: normal silicate according to following raw material and proportion respectively
480 parts of cement, 65 parts of fast gravity die cement, 40 parts of silicon ash, 420 parts of aggregate, 190 parts of water, 6 parts of cement mortar additive.It prepared
Cheng Zhong, each raw material according to water, cementitious material, additive, aggregate sequence be added after, or by cementitious material, additive and
After aggregate mixing directly plus after water, 3min is mixed slowly using cement mortar mixer or vertical mortar mixer.It tests respectively
The mobility of each group cement mortar and anti-folding, compression strength.
3. experimental result
Experimental results are shown in Table 3.
3 each group cement mortar experimental results of table
As can be seen from the table:
1) the cement mortar fluidity that experimental group one is prepared is suitable for that the anti-folding of each period, compression strength are best；
2) the cement mortar fluidity that experimental group four to five is prepared is suitable for that the anti-folding of each period, compression strength are compared with experimental group one
Declined, but in the error range that the present invention allows；
3) the cement mortar fluidity that experimental group six and seven is prepared is less than normal, and the anti-folding of each period, compression strength are also relatively low；
4) the cement mortar fluidity that experimental group eight and nine is prepared is larger, and the anti-folding of each period, compression strength deviate considerably from
The error range that the present invention allows.
Above-mentioned description of test: cement mortar additive of the invention can make cement mortar have preferable fluidity, and
Stronger anti-folding, compression strength.
Claims (10)
1. a kind of cement mortar additive, which is characterized in that be grouped as by the group that following weight matches:
370~410 parts of water-reducing agent, 20~40 parts of defoaming agent, 300~350 parts of the first retarder, 60~70 parts of the second retarder,
10~15 parts of thickener, 100~120 parts of plastic expansion agent, 200~250 parts of rubber powder.
2. cement mortar additive according to claim 1, which is characterized in that be grouped as by the group that following weight matches:
380~400 parts of water-reducing agent, 25~35 parts of defoaming agent, 320~330 parts of the first retarder, 60~70 parts of the second retarder,
10~15 parts of thickener, 105~115 parts of plastic expansion agent, 220~230 parts of rubber powder.
3. cement mortar additive according to claim 1, which is characterized in that the water-reducing agent is the high property of polycarboxylate system
It can water-reducing agent.
4. cement mortar additive according to claim 1 or 2, which is characterized in that the defoaming agent disappears for mineral oils
The composition of one or more of infusion, organic silicon defoaming agent, polyethers defoaming agent.
5. cement mortar additive according to claim 1 or 2, which is characterized in that first retarder is slow for carbohydrate
Solidifying agent.
6. cement mortar additive according to claim 1 or 2, which is characterized in that second retarder be zinc salt and
The composition of one or both of phosphate.
7. cement mortar additive according to claim 1 or 2, which is characterized in that the thickener is microorganism polymerization
Species thickener.
8. cement mortar additive according to claim 1 or 2, which is characterized in that the rubber powder is Redispersable latex
Powder.
9. the application method of cement mortar additive according to any one of claims 1 to 8, which is characterized in that the cement bonded sand
Cement mortar or concrete is added in the mode of mixing other than slurry additive, and incorporation is cementitious material weight in cement mortar or concrete
1.0%~1.2%.
10. a kind of cement mortar is made using according to any one of claims 1 to 88 described in any item cement mortar additives, feature exists
In, by following weight match group be grouped as:
470~490 parts of ordinary portland cement, 55~75 parts of fast gravity die cement, 35~45 parts of silicon ash, 410~430 parts of aggregate,
180~200 parts of water, 6~7 parts of cement mortar additive.
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| CN201811345525.3A CN109180063A (en) | 2018-11-13 | 2018-11-13 | A kind of cement mortar additive and its application method |
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| CN201811345525.3A CN109180063A (en) | 2018-11-13 | 2018-11-13 | A kind of cement mortar additive and its application method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110776272A (en) * | 2019-12-03 | 2020-02-11 | 中铁二局集团有限公司 | Additive capable of improving construction performance of cement-based grouting material and preparation method thereof |
| CN111423153A (en) * | 2020-05-26 | 2020-07-17 | 重庆三圣实业股份有限公司 | Wet-mixed mortar additive and preparation method thereof |
| CN113754341A (en) * | 2021-09-24 | 2021-12-07 | 上海中冶环境工程科技有限公司 | Modifier for concrete, counterweight concrete, preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563378A (en) * | 2019-10-15 | 2019-12-13 | 竹鹏翔 | High-fluidity concrete additive and preparation method thereof |
| CN110776272A (en) * | 2019-12-03 | 2020-02-11 | 中铁二局集团有限公司 | Additive capable of improving construction performance of cement-based grouting material and preparation method thereof |
| CN111423153A (en) * | 2020-05-26 | 2020-07-17 | 重庆三圣实业股份有限公司 | Wet-mixed mortar additive and preparation method thereof |
| CN115073041A (en) * | 2021-03-11 | 2022-09-20 | 北京都市绿源环保科技有限公司 | Additive for controllable low-strength backfill material and preparation method thereof |
| CN113754341A (en) * | 2021-09-24 | 2021-12-07 | 上海中冶环境工程科技有限公司 | Modifier for concrete, counterweight concrete, preparation method and application thereof |
| CN116589245A (en) * | 2023-05-19 | 2023-08-15 | 中山市万宜混凝土有限公司 | A kind of ultra-retarded concrete and preparation method thereof |
| CN116589245B (en) * | 2023-05-19 | 2025-04-01 | 中山市万宜混凝土有限公司 | Super slow-setting concrete and preparation method thereof |
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Application publication date: 20190111 |