CN103723946B - A kind of energy saving and environment friendly fresh concrete activator - Google Patents
A kind of energy saving and environment friendly fresh concrete activator Download PDFInfo
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- CN103723946B CN103723946B CN201310733990.5A CN201310733990A CN103723946B CN 103723946 B CN103723946 B CN 103723946B CN 201310733990 A CN201310733990 A CN 201310733990A CN 103723946 B CN103723946 B CN 103723946B
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Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of energy saving and environment friendly fresh concrete activator, its component comprises Organic Alcohol, stablizer, polyvinyl alcohol and/or polyvinyl chloride, dispersion agent, water, also comprises thickening material.Activator of the present invention is used for fresh concrete, can reduce aggregate surface free water, increases the cohesive force of Behavior of Hardened Cement Paste and aggregate, improves concrete intensity and endurance quality, increase the service life; Meanwhile, realizing reducing water reducer consumption and saving on the basis of economic benefit target of gelling material, keeping concrete class intensity and improving its construction workability energy, realizing the target of energy-conserving and environment-protective.
Description
Technical field
The invention belongs to building material technical field, particularly the energy saving and environment friendly fresh concrete activator of one.
Background technology
Concrete is main gelling material in order to cement, and the aggregate such as sand, stone, coordinates by a certain percentage with water (add or do not add admixture and adulterant), through stirring, the material of construction of hardened forming.Concrete is widely used in modern industry and covil construction, and become the base mateiral building modern society, modern humans society almost all respects all will relate to concrete use.From ancient times to the present, concrete has a common mission as building structural materials, is exactly the work-ing life extending buildings as far as possible, namely plays concrete endurance quality.
Research shows, in fresh concrete preparation process, due to interior bleeding effect and aggregate surface effect, forms the special transitional region that a layer porosity is higher, be called interfacial transition zone between Behavior of Hardened Cement Paste-aggregate around aggregate.Why weak than its component (aggregate and Behavior of Hardened Cement Paste) mechanical property of normal concrete is, say from microcosmic point, reason is just the existence of interfacial transition zone, it is like being weakest link in a chain, in a sense, the concrete mechanical property of the structures shape of zone of transition, becomes the restricted condition of mechanical performance of concrete development.
Concrete admixture is mainly used to improve the serviceability of fresh concrete and the endurance quality after improving its sclerosis.Water reducer is one of admixture generally used in current concrete production, is concrete important component part.Its function is the concrete minimizing water consumption making to reach certain slump, namely, in gel material content one timing, reach the slump of expection with less water, reduce water cement ratio, thus on the basis of saving gel material content, reach identical intensity, make concrete slump loss little, improve serviceability, and appropriate bleed, improve concrete endurance quality.
Widely used naphthalene water reducer and poly carboxylic acid series water reducer in current concrete production, overcoming concrete water mudstone-aggregate adhesive surface defect, improve concrete strength and lower water cement ratio aspect and played vital role, but still effectively cannot solve the defect of interfacial transition zone outwardness between Behavior of Hardened Cement Paste-aggregate in concrete.Naphthalene water reducer is as the representative of s-generation water reducer, with diminishing, enhancing, strong from different cement adaptability, moderate for feature, widespread use in concrete works, but water-reducing rate is low, slump-loss is large, the phenomenon of the quality instability such as fresh concrete easy appearance in transport and casting process is suddenly coagulated, bleeding, layering, intensity reduction.As the poly carboxylic acid series water reducer of cement water reducing agent of new generation, there is the high tender subject of adaptability, susceptibility, consistency with gelling material, suddenly coagulating often appear in fresh concrete in transport and casting process, slow setting, bleeding, layering, the quality instability such as slump-loss is fast, bubble is many, intensity reduction phenomenon.
In sum, the phenomenon of concrete quality instability after the textural defect existed based on concrete interface zone of transition and water reducer use, is badly in need of research and development new additive, improves concrete workability and endurance quality.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, a kind of energy saving and environment friendly fresh concrete activator is provided.
The technical solution used in the present invention is:
A kind of energy saving and environment friendly fresh concrete activator, comprises following component: Organic Alcohol 25 ~ 40 weight part, stablizer 3 ~ 5 weight part, polyvinyl alcohol and/or polyvinyl chloride 3 ~ 8 weight part, dispersion agent 25 ~ 40 weight part and water 13 ~ 28 weight part.
Preferably, thickening material 1 ~ 5 weight part is also comprised.
Preferably, described Organic Alcohol is at least one in monoisopropanolamine, diisopropanolamine (DIPA), tri-isopropanolamine.
Preferably, described stablizer is at least one in fatty alcohol-polyoxyethylene ether, sodium alkyl sulfate, polymethylmethacrylate, hydroxyethyl methacrylate second fat.
Preferably, described dispersion agent is at least one in polycarboxylate salt dispersant, naphthalenesulfonate formaldehyde condensation compound, polycyclic aromatic hydrocarbon sulfonate formaldehyde condensation products, condensate of melamine sulfonate and formaldehyde.
Preferably, described thickening material is ether of cellulose and derivatives class thickening material thereof.
Preferably, described thickening material is at least one in TYLOSE 30000, carboxyethyl cellulose ether, methyl cellulose ether, cellulose ether.
The invention has the beneficial effects as follows:
Fresh concrete activator provided by the invention, can reduce aggregate surface free water, increases the cohesive force of Behavior of Hardened Cement Paste and aggregate, improves concrete intensity and endurance quality, increase the service life; Meanwhile, realizing reducing water reducer consumption and saving on the basis of economic benefit target of gelling material, keeping concrete class intensity and improving its construction workability energy, realizing the target of energy-conserving and environment-protective.
Embodiment
A kind of energy saving and environment friendly fresh concrete activator, comprises following component: Organic Alcohol 25 ~ 40 weight part, stablizer 3 ~ 5 weight part, polyvinyl alcohol and/or polyvinyl chloride 3 ~ 8 weight part, dispersion agent 25 ~ 40 weight part and water 13 ~ 28 weight part.
Optimum, fresh concrete activator comprises following component: Organic Alcohol 35 weight part, thickening material 3 weight part, stablizer 4 weight part, polyvinyl alcohol and/or polyvinyl chloride 6 weight part, dispersion agent 35 weight part, water 17 weight part.
Preferably, thickening material 1 ~ 5 weight part is also comprised.
Preferably, described Organic Alcohol is at least one in monoisopropanolamine, diisopropanolamine (DIPA), tri-isopropanolamine.
Preferably, stablizer is at least one in fatty alcohol-polyoxyethylene ether, sodium alkyl sulfate, polymethylmethacrylate, hydroxyethyl methacrylate second fat.Add stablizer, each component is uniformly distributed in process of production, and ensure that activator product does not occur deposited phenomenon within the longer quality guaranteed period.
Preferably, described dispersion agent is at least one in polycarboxylate salt dispersant, naphthalenesulfonate formaldehyde condensation compound, polycyclic aromatic hydrocarbon sulfonate formaldehyde condensation products, condensate of melamine sulfonate and formaldehyde.
Preferably, described thickening material is ether of cellulose and derivatives class thickening material thereof.
Preferably, described thickening material is at least one in TYLOSE 30000, carboxyethyl cellulose ether, methyl cellulose ether, cellulose ether.
The preparation method of activator of the present invention, comprises the following steps: take each component raw material by proportioning, add reactor, stirring and evenly mixing, get product.
Activator of the present invention is used for fresh concrete, and preferably, activator is concrete 0.08 ~ 0.2wt%.Concrete preparation method is method well known to those skilled in the art, there is no special restriction.Preferably, activator is added in the compound of water and water reducer, then with conventional aggregate, gelling material mix and blend, make concrete material.
The present invention is directed to the weak link of concrete zone of transition, scientific formula is provided, utilize the characteristic of organic high molecular polymer (polyvinyl alcohol, polyvinyl chloride, thickening material, dispersion agent), it is made to be distributed between Behavior of Hardened Cement Paste-aggregate interface, organically combine with inorganics, play the effect such as plasticizing, water conservation to cement grains and slurry; Further, by polymkeric substance self with reactive functional groups, have an effect with the positively charged ion in slurry or coordinating chemical bond.Along with the carrying out of physics, chemical reaction process, the continuous hydration and hardening of fresh concrete system, the continuous activeness and quietness of system, the high performance concrete material of final formation.The invention solves the phenomenon that water reducer on Vehicles Collected from Market widely uses the concrete quality instability brought, realize the target of saving energy and reduce the cost simultaneously.
Below in conjunction with specific embodiment, set forth content of the present invention further.In following examples, agents useful for same is commercially available prod, if without specified otherwise, described number all refers to weight part.
Embodiment 1
Take each component raw material: monoisopropanolamine 25 parts, TYLOSE 30000 5 parts, fatty alcohol-polyoxyethylene ether 3 parts, polyvinyl alcohol 5 parts, dispersion agent (methyl naphthalene sulfonic acid salt formaldehyde condensation products) 40 parts, 22 parts, water; Add reactor, mix and blend 2 hours under normal temperature, obtains fresh concrete activator 1#.
Embodiment 2
Take each component raw material: diisopropanolamine (DIPA) 35 parts, 3 parts, carboxyethyl cellulose ether, fatty alcohol-polyoxyethylene ether 4 parts, polyvinyl chloride 6 parts, polycarboxylate sodium's dispersion agent 35 parts, 17 parts, water; Add reactor, mix and blend 2 hours under normal temperature, obtains fresh concrete activator 2#.
Embodiment 3
Take each component raw material: diisopropanolamine (DIPA) 35 parts, methyl cellulose ether 3 parts, fatty alcohol-polyoxyethylene ether 5 parts, polyvinyl chloride 6 parts, dispersion agent (methyl naphthalene sulfonic acid salt formaldehyde condensation products) 30 parts, 21 parts, water; Add reactor, mix and blend 2 hours under normal temperature, obtains fresh concrete activator 3#.
Embodiment 4
Take each component raw material: tri-isopropanolamine 38 parts, cellulose ether 3 parts, sodium alkyl sulfate 5 parts, polyvinyl chloride 6 parts, dispersion agent (polycarboxylate sodium's dispersion agent) 25 parts, 28 parts, water; Add reactor, mix and blend 2 hours under normal temperature, obtains fresh concrete activator 4#.
Embodiment 5
Take each component raw material: tri-isopropanolamine 40 parts, 4 parts, Walocel MT 20.000PV ether, sodium alkyl sulfate 2 parts, polymethylmethacrylate 2 parts, polyvinyl chloride 4 parts, polyvinyl alcohol 4 parts, polycyclic aromatic hydrocarbon sulfonate formaldehyde condensation products 31 parts, 13 parts, water; Add reactor, mix and blend 3 hours under normal temperature, obtains fresh concrete activator 5#.
Embodiment 6
Take each component raw material: tri-isopropanolamine 30 parts, cellulose ether 1 part, fatty alcohol-polyoxyethylene ether 2 parts, 2 parts, hydroxyethyl methacrylate second fat, polyvinyl chloride 3 parts, condensate of melamine sulfonate and formaldehyde 37 parts, 25 parts, water, add reactor, mix and blend 2.5 hours under normal temperature, obtains fresh concrete activator 6#.
Application examples 1
Guangzhou Huadu stirring station prepares C30, and every cube of raw materials used and concrete performance perameter of concrete is as shown in the table:
Water reducer used is naphthalene water reducer (SSF-1000 naphthalene series high-efficiency water-reducing agent), and cement is conch PII42.5R, and flyash is secondary ash, and sand is river grain fineness number modulus 2.8, and stone is 0.5-3cm continuous grading grouan.Add the fresh concrete activator 1# using embodiment 1 to prepare in sample 1, consumption is the 0.085wt% of concrete material.During production, activator is added in the compound of water and water reducer, then with aggregate, gelling material mix and blend, make concrete sample 1.
Application examples 2
Guangdong Zhong Shan stirring station prepares C35, and every cube of raw materials used and concrete performance perameter of concrete is as shown in the table:
Water reducer used is poly carboxylic acid series water reducer (SSF-4000), and cement is China Resources PII42.5R, and flyash is secondary ash, and ground slag powder is Shoudu Iron and Steel Co breeze S95, and sand is washed-out sand fineness modulus 2.6, and stone is 0.5-3cm continuous grading grouan.Add the fresh concrete activator 3# using embodiment 3 to prepare in sample 2, consumption is the 0.10wt% of concrete material.
Application examples 3
Fugang, Guangdong Qingyuan stirring station prepares C30, and every cube of raw materials used and concrete performance perameter of concrete is as shown in the table:
Water reducer used is naphthalene water reducer (SSF-1000 naphthalene series high-efficiency water-reducing agent) water-reducing rate 19%, cement is conch P042.5R, flyash is secondary ash, without ground slag powder, sand is that 60% river grain fineness number modulus 2.7+40% Machine-made Sand is used in combination, and stone is 0.5-3 continuous grading grouan.Add the fresh concrete activator 4# using embodiment 4 to prepare in sample 3, consumption is the 0.08wt% of concrete material.
Application examples 4
Road and bridge construction on-the-spot concentrated compactness in Guangdong Qingyuan's prepares C40 self-leveling concrete, and every cube of raw materials used and concrete performance perameter of concrete is as shown in the table:
Water reducer used is poly carboxylic acid series water reducer water-reducing rate 23%, and cement is conch PII42.5R, and flyash is secondary ash, and without ground slag powder, sand is river grain fineness number modulus 3.0, and stone is 0.5-1.5 continuous grading hand breaking pebbles.Add the fresh concrete activator 2# using embodiment 2 to prepare in sample 4, consumption is the 0.11wt% of concrete material.Contrast sample workability is general, can not reach self-leveling concrete requirement, and sample 4 workability of admixture product activator of the present invention is good, and can meet self-leveling concrete indices, effect clearly.
Application examples 5
Guangzhou Huadu stirring station prepares C60, and every cube of raw materials used and concrete performance perameter of concrete is as shown in the table:
Water reducer used is naphthalene water reducer water-reducing rate 20%, and cement is platform mud P042.5R, and flyash is secondary ash, and ground slag powder is Liu Gang S95 breeze, and sand is river grain fineness number modulus 2.7, and stone is 0.5-3.1 continuous grading grouan.Add the fresh concrete activator 2# using embodiment 2 to prepare in sample 5, consumption is the 0.13wt% of concrete material.
Application examples 6
C70 is prepared at certain testing ground, and every cube of raw materials used and concrete performance perameter of concrete is as shown in the table:
Water reducer used is poly carboxylic acid series water reducer water-reducing rate 33%, and cement is golden sheep PII42.5R, and silicon ash agree silica flour for dust, and ground slag powder is splendid steel breeze S95, and sand is washed-out sand fineness modulus 2.8, and stone is 0.5-2.0 continuous grading high-quality grouan.Add the fresh concrete activator 2# using embodiment 2 to prepare in sample 6, consumption is the 0.2wt% of concrete material.
The concrete sample of above construction embodiment " application examples 1 ~ 6 " is compared with blank's sample concrete, decreasing cement, breeze or flyash when concrete class is identical is main gelling material 10 ~ 16%, reduce water reducer consumption 6% ~ 10%, significantly reduce production cost.Add the concrete sample of activator compared with blank's sample normal concrete, significantly improve construction workability, function of slump protection is good, and during conveying, pumping is smooth, and anti-bleeding, reduces bad bubble, improves the stability of the concrete quality that dispatches from the factory.The each component disperses of concrete is better, and appearance luster is even, improves anti-permeability performance and the endurance quality of hardened forming structure.
Claims (4)
1. an energy saving and environment friendly fresh concrete activator, comprises following component: Organic Alcohol 25 ~ 40 weight part, stablizer 3 ~ 5 weight part, polyvinyl alcohol and/or polyvinyl chloride 3 ~ 8 weight part, dispersion agent 25 ~ 40 weight part and water 13 ~ 28 weight part; Wherein, described Organic Alcohol is at least one in monoisopropanolamine, diisopropanolamine (DIPA), tri-isopropanolamine; Described stablizer is at least one in fatty alcohol-polyoxyethylene ether, sodium alkyl sulfate, polymethylmethacrylate, hydroxyethyl methacrylate second fat; Described dispersion agent is at least one in polycarboxylate salt dispersant, naphthalenesulfonate formaldehyde condensation compound, polycyclic aromatic hydrocarbon sulfonate formaldehyde condensation products, condensate of melamine sulfonate and formaldehyde.
2. fresh concrete activator according to claim 1, is characterized in that: also comprise thickening material 1 ~ 5 weight part.
3. fresh concrete activator according to claim 2, is characterized in that: described thickening material is ether of cellulose and derivatives class thickening material thereof.
4. fresh concrete activator according to claim 3, is characterized in that: described thickening material is at least one in TYLOSE 30000, carboxyethyl cellulose ether, methyl cellulose ether, cellulose ether.
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| CN201310733990.5A CN103723946B (en) | 2013-12-26 | 2013-12-26 | A kind of energy saving and environment friendly fresh concrete activator |
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| CN201310733990.5A CN103723946B (en) | 2013-12-26 | 2013-12-26 | A kind of energy saving and environment friendly fresh concrete activator |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104119024B (en) * | 2014-06-25 | 2016-04-13 | 芜湖市三兴混凝土外加剂有限公司 | Collapse protection type water reducer |
| CN104844060B (en) * | 2015-05-13 | 2017-08-04 | 温州大学 | New concrete synergist and its manufacturing process |
| CN105217990B (en) * | 2015-10-26 | 2017-05-10 | 房立国 | A kind of concrete reinforcing agent and preparation method thereof |
| CN106631128A (en) * | 2016-03-30 | 2017-05-10 | 四川华西绿舍建材有限公司 | Special admixture for full-lightweight ceramsite concrete and preparation method |
| CN106316201B (en) * | 2016-08-22 | 2018-05-11 | 四川睿铁科技有限责任公司 | A kind of trass concrete special anti-corrosion agent |
| CN113929348B (en) * | 2021-11-09 | 2022-11-25 | 安徽海螺新材料科技有限公司 | Concrete performance improving agent and preparation method thereof |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6075075A (en) * | 1995-07-19 | 2000-06-13 | Basf Aktiengesellschaft | Use of aqueous polymer dispersions for modifying mineral building materials |
| CN1354734A (en) * | 1999-04-09 | 2002-06-19 | 詹姆斯·哈迪研究有限公司 | Concrete formulation |
| CN102007084A (en) * | 2008-04-16 | 2011-04-06 | 阿克佐诺贝尔股份有限公司 | Rheology influencing additive for mineral building materials |
| CN102464466A (en) * | 2010-11-02 | 2012-05-23 | 淮南矿业(集团)有限责任公司 | Sprayed concrete additive and spraying process of sprayed concrete |
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