CN114656229B - Mortar material for obtaining undisturbed soil samples in batches and sampling construction method - Google Patents
Mortar material for obtaining undisturbed soil samples in batches and sampling construction method Download PDFInfo
- Publication number
- CN114656229B CN114656229B CN202210472558.4A CN202210472558A CN114656229B CN 114656229 B CN114656229 B CN 114656229B CN 202210472558 A CN202210472558 A CN 202210472558A CN 114656229 B CN114656229 B CN 114656229B
- Authority
- CN
- China
- Prior art keywords
- parts
- mortar
- mortar material
- water
- construction method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- 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
- C04B28/06—Aluminous cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/04—Sampling of soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0021—Mortar
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a mortar material for obtaining undisturbed soil samples in batches and a sampling construction method, and belongs to the technical field of physical property test research of soil bodies in civil engineering subjects. The mortar material for obtaining the undisturbed soil sample in batches and the sampling construction method are convenient to obtain and relatively low in cost. The mortar material is fluid mixed mortar at least comprising the following components, by weight, 30-50 parts of cement, 0-20 parts of mineral admixture, 50-70 parts of fine aggregate, 0.1-0.5 part of water reducer, 0-2 parts of hydrophobic material, 0-0.2 part of anti-dispersant and 15-30 parts of water. The construction method comprises the steps of firstly weighing the raw materials with the corresponding weight according to the weight parts, carrying out dry mixing and uniform mixing in a water-free state, then adding a corresponding amount of water, fully mixing to form a liquid mortar material, casting the mortar material into a groove which is needed to be obtained for soil sample carving, self-leveling and solidifying to a specified hardness, and finally taking out the soil sample together with the mortar solidified body.
Description
Technical Field
The invention relates to a mortar material, in particular to a mortar material for obtaining undisturbed soil samples in batches, and belongs to the technical field of physical property test research of soil bodies in civil engineering subjects. The invention also relates to a construction method for carrying out batch sampling by adopting the mortar material.
Background
Geotechnical test is a direct and effective means for finding out physical and mechanical properties of soil layers, and provides important design and calculation parameters for reasonable utilization of engineering projects and soil bodies and engineering treatment. The soil sample collection and the sample preparation are the head work of the geotechnical indoor test and the primary work of the geotechnical indoor test. The sample is the core of the geotechnical test, and the soil sample is the original substance prepared by the sample. The representativeness of soil samples and specimens is critical to ensure that geotechnical tests have real value. Soil samples used in geotechnical tests are classified into undisturbed soil samples and disturbed soil samples. The preparation of undisturbed soil samples requires the maintenance of the natural structure, natural water content and natural density of soil mass, and is a difficult point, pain point and key point of sample preparation.
The original shape of the viscous soil layer can be prepared by a thin-wall soil sampler, and a more mature method is provided. However, the cohesive soil such as pebble layer, gravel layer and sand layer is not easy to scatter due to lack of cohesive property among particles, and the water content is too high or too low, so that the structure is lost. The method of freezing, chemical grouting, steel sheet pile and the like is generally adopted for drilling the water-down sample abroad, but the methods are usually huge in cost and difficult to implement. In general, there is no economically viable, easy to handle, method for preparing a sample of non-stick earth bodies.
In civil engineering, quick setting mortar is generally sulphoaluminate cement or double quick setting cement with higher hydration speed, or common silicate cement setting time is adjusted by adopting constant-speed setting additives of lithium carbonate, and for the quick sampling method, raw materials are required to be easy to obtain and cheap, and along with development of lithium battery industry, the price of the quick setting agent is also increased rapidly; the setting time of the common sulphoaluminate cement is still slower, the work efficiency is affected, the price of the double quick cement is higher, the supply factories are limited, and the quick and low-cost acquisition is difficult.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the mortar material for obtaining the undisturbed soil sample in batches is convenient to obtain and relatively low in cost. The invention also provides a construction method for carrying out batch sampling by adopting the mortar material.
The technical scheme adopted for solving the technical problems is as follows: a mortar material for obtaining undisturbed soil samples in batches is a fluid mixed mortar material at least comprising the following components in parts by weight,
the cement-based mortar comprises, by weight, 30-50 parts of cement, 0-20 parts of mineral admixture, 50-70 parts of fine aggregate, 0.1-0.5 part of water reducer, 0-2 parts of hydrophobic material, 0-0.2 part of anti-dispersant and 15-30 parts of water.
Further, the cement is a mixture of ordinary Portland cement with the strength grade not lower than 42.5 and sulphoaluminate cement, wherein the mass ratio of the ordinary Portland cement is 90-50%.
The preferable mode of the scheme is that the mineral admixture is an active and inert admixture such as stone powder or fly ash.
Further, the fine aggregate is one or a combination of two of artificial sand and natural sand.
The preferable mode of the scheme is that the water reducer is a polycarboxylic acid high-efficiency water reducer.
Further, the hydrophobic material is one or a combination of a plurality of acrylic emulsion, redispersible emulsion powder, organic silicon and coupling agent.
In a preferred mode of the scheme, the anti-dispersant is polyacrylamide or sodium polyacrylate.
The construction method comprises the steps of weighing raw materials with corresponding weight according to the weight parts, dry-mixing the raw materials uniformly in a water-free state, adding a corresponding amount of water, fully mixing the raw materials to form a liquid mortar material, pouring the mortar material into a groove which is needed to be obtained for soil sample carving, self-leveling and solidifying the mortar material to a specified hardness, and finally taking out the soil sample together with a mortar solidified body.
Further, before the casting mortar material is obtained by batch undisturbed soil samples, at least one template is respectively supported in each carved groove, casting is then carried out, and the templates are removed before sampling to obtain undisturbed soil samples of each block.
The beneficial effects of the invention are as follows: according to the method, 30-50 parts of cement, 0-20 parts of mineral admixture, 50-70 parts of fine aggregate, 0.1-0.5 part of water reducer, 0-2 parts of hydrophobic material, 0-0.2 part of anti-dispersant and 15-30 parts of water are provided to form the mortar material, when original soil samples are obtained in batches, raw materials with corresponding weight are firstly weighed according to the weight parts, dry mixing and uniform mixing are carried out in a water-free state, then corresponding amounts of water are added to be fully mixed to form liquid mortar materials, the mortar materials are poured into grooves which are needed to be carved by the obtained soil samples, self leveling is carried out, the concrete is solidified to the specified hardness, and finally the original soil samples are obtained in batches together with the concrete. Thus, the mortar material of the application adopts the conventional cement, and then the mineral admixture for solving the problem of heat productivity, the fine aggregate for solving the problem of fluidity and the water reducing agent are added, the hydrophobic material for avoiding interference to the water content of the original soil sample and the anti-dispersant for avoiding the influence of the mortar diffusion on the soil sample composition are avoided, and then dry mixing, wet mixing, and finally pouring and sampling are carried out to finish the batch sampling work for obtaining the original soil sample, so that the mortar material of the application is convenient to obtain, the cost is relatively low, the construction is very simple and convenient, and especially the mortar material without the requirement of later physicochemical property for the original soil sample can be obtained more conveniently, the cost is relatively low, and the purposes of simple and convenient construction are achieved.
Detailed Description
In order to solve the technical problems in the prior art, the invention provides the mortar material which is convenient to obtain materials and relatively low in cost and is used for obtaining undisturbed soil samples in batches, and the construction method for sampling the mortar material in batches. The mortar material is fluid mixed mortar which at least comprises the following components in parts by weight,
the cement-based mortar comprises, by weight, 30-50 parts of cement, 0-20 parts of mineral admixture, 50-70 parts of fine aggregate, 0.1-0.5 part of water reducer, 0-2 parts of hydrophobic material, 0-0.2 part of anti-dispersant and 15-30 parts of water. The construction method comprises the steps of firstly weighing the raw materials with the corresponding weight according to the weight parts, carrying out dry mixing and uniform mixing in a anhydrous state, then adding a corresponding amount of water, fully mixing to form a liquid mortar material, casting the mortar material into a groove which is needed to be obtained for soil sample carving, self-leveling and solidifying to a specified hardness, and finally taking out the soil sample together with the mortar solidified body. According to the method, 30-50 parts of cement, 0-20 parts of mineral admixture, 50-70 parts of fine aggregate, 0.1-0.5 part of water reducer, 0-2 parts of hydrophobic material, 0-0.2 part of anti-dispersant and 15-30 parts of water are provided to form the mortar material, when original soil samples are obtained in batches, raw materials with corresponding weight are firstly weighed according to the weight parts, dry mixing and uniform mixing are carried out in a water-free state, then corresponding amounts of water are added to be fully mixed to form liquid mortar materials, the mortar materials are poured into grooves which are needed to be carved by the obtained soil samples, self leveling is carried out, the concrete is solidified to the specified hardness, and finally the original soil samples are obtained in batches together with the concrete. Thus, the mortar material of the application adopts the conventional cement, and then the mineral admixture for solving the problem of heat productivity, the fine aggregate for solving the problem of fluidity and the water reducing agent are added, the hydrophobic material for avoiding interference to the water content of the original soil sample and the anti-dispersant for avoiding the influence of the mortar diffusion on the soil sample composition are avoided, and then dry mixing, wet mixing, and finally pouring and sampling are carried out to finish the batch sampling work for obtaining the original soil sample, so that the mortar material of the application is convenient to obtain, the cost is relatively low, the construction is very simple and convenient, and especially the mortar material without the requirement of later physicochemical property for the original soil sample can be obtained more conveniently, the cost is relatively low, and the purposes of simple and convenient construction are achieved.
In the above embodiments, in order to improve the capability of the mortar material described in the present application in solving the corresponding problems, the mineral admixture described in the present application is an active, inert admixture such as stone powder or fly ash. The fine aggregate is one or the combination of two of artificial sand and natural sand. The water reducer is a polycarboxylic acid high-efficiency water reducer. The hydrophobic material is one or a combination of a plurality of acrylic emulsion, redispersible emulsion powder, organic silicon and coupling agent. The anti-dispersant is polyacrylamide or sodium polyacrylate. Meanwhile, in order to solve the problem of setting time of the mortar material, the cement is a mixture of ordinary Portland cement with the strength grade not lower than 42.5 and sulphoaluminate cement, wherein the mass ratio of the ordinary Portland cement is 90-50%.
Correspondingly, in order to independently detect or sample each undisturbed soil sample obtained in batch, before the pouring mortar material is obtained by the batch undisturbed soil sample, at least one template is respectively supported in each carved groove, then pouring is carried out, and the templates are removed before sampling so as to obtain the undisturbed soil sample of each block.
In summary, the technical proposal provided by the application has the following advantages,
1. the undisturbed soil sample can be obtained in batch at the same time by a mode of building a mortar sash;
2. according to different air temperatures, the cement composition can be finely adjusted, so that the setting time is controlled, and the sampling efficiency is improved;
3. special coagulation promoting materials are not adopted, so that the cost is reduced;
4. self-leveling, no vibration is needed in the test process, and disturbance to the soil structure is avoided;
5. the surface after solidification is hydrophobic, so that excessive water exchange between the mortar solidified body and the soil sample is avoided;
6. highly self-polymerizing, and can be suitable for water conditions.
Example 1
The material composition comprises: ordinary Portland cement: 45 parts of sulphoaluminate cement and 5 parts of a cement; 50 parts of fine aggregate; 0.3 parts of water reducer and 15 parts of water. The using method comprises the following steps: and (3) after uniformly mixing cement, fine aggregate and a water reducing agent, adding quantitative water, fully and uniformly stirring, pouring into grooves carved by the obtained patterns, and carrying out self-leveling. The beneficial effects are that: see table 1.
Example two
The material composition comprises: ordinary Portland cement: 28 parts of sulphoaluminate cement and 12 parts of cement; 10 parts of admixture; 50 parts of fine aggregate; 0.5 part of water reducer and 20 parts of water. The using method comprises the following steps: and (3) after uniformly mixing cement, fine aggregate and a water reducing agent, adding quantitative water, fully and uniformly stirring, pouring into grooves carved by the obtained patterns, and carrying out self-leveling. The beneficial effects are that: see table 1.
Example III
The material composition comprises: ordinary Portland cement: 15 parts of sulphoaluminate cement; 10 parts of admixture; 60 parts of fine aggregate; 0.10 parts of water reducer and 15 parts of water. The using method comprises the following steps: and (3) after uniformly mixing cement, fine aggregate and a water reducing agent, adding quantitative water, fully and uniformly stirring, pouring into grooves carved by the obtained patterns, and carrying out self-leveling. The beneficial effects are that: see table 1.
Example IV
The material composition comprises: ordinary Portland cement: 40 parts of sulphoaluminate cement and 10 parts of cement; 50 parts of fine aggregate; 0.10 parts of water reducer, 30 parts of water and 1 part of waterproof material. The using method comprises the following steps: and (3) after uniformly mixing cement, fine aggregate and a water reducing agent, adding quantitative water, fully and uniformly stirring, pouring into grooves carved by the obtained patterns, and carrying out self-leveling. The beneficial effects are that: see table 1.
Example five
The material composition comprises: ordinary Portland cement: 24 parts of sulphoaluminate cement and 6 parts of cement; 70 parts of fine aggregate; 0.10 parts of water reducer and 20 parts of water. The using method comprises the following steps: and (3) after uniformly mixing cement, fine aggregate and a water reducing agent, adding quantitative water, fully and uniformly stirring, pouring into grooves carved by the obtained patterns, and carrying out self-leveling. The beneficial effects are that: see table 1.
Table 1 advantageous effects of the examples
Claims (2)
1. The construction method for carrying out batch sampling by adopting a mortar material for obtaining undisturbed soil samples in batches, wherein the mortar material is a fluid mixed mortar material at least comprising the following components in parts by weight; the cement is a mixture of ordinary Portland cement with the strength grade not lower than 42.5 and sulphoaluminate cement, wherein the mass ratio of the ordinary Portland cement is 90% -50%; the mineral admixture is an active and inert admixture such as stone powder or fly ash; the fine aggregate is one or the combination of two of artificial sand and natural sand; the water reducer is a polycarboxylic acid high-efficiency water reducer; the hydrophobic material is one or a combination of a plurality of acrylic emulsion, redispersible emulsion powder, organic silicon and coupling agent; the anti-dispersant is polyacrylamide or sodium polyacrylate, and is characterized in that: the construction method comprises the steps of firstly weighing the raw materials with the corresponding weight according to the weight parts, carrying out dry mixing and uniform mixing in a anhydrous state, then adding a corresponding amount of water, fully mixing to form a liquid mortar material, casting the mortar material into a groove which is needed to be obtained for soil sample carving, self-leveling and solidifying to a specified hardness, and finally taking out the soil sample together with the mortar solidified body.
2. The construction method according to claim 1, wherein: before a batch of undisturbed soil samples are obtained to obtain pouring mortar materials, at least one template is respectively supported in each carved groove, then pouring is carried out, and the templates are removed before sampling to obtain undisturbed soil samples of each block which are independent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472558.4A CN114656229B (en) | 2022-04-29 | 2022-04-29 | Mortar material for obtaining undisturbed soil samples in batches and sampling construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472558.4A CN114656229B (en) | 2022-04-29 | 2022-04-29 | Mortar material for obtaining undisturbed soil samples in batches and sampling construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114656229A CN114656229A (en) | 2022-06-24 |
| CN114656229B true CN114656229B (en) | 2023-04-28 |
Family
ID=82036856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210472558.4A Active CN114656229B (en) | 2022-04-29 | 2022-04-29 | Mortar material for obtaining undisturbed soil samples in batches and sampling construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114656229B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2815342B1 (en) * | 2000-10-13 | 2003-08-01 | Francais Ciments | CEMENTITIOUS COMPOSITION, ITS USE FOR THE PRODUCTION OF A SELF-LEVELING LIQUID SCREW AND A SCREEN THUS OBTAINED |
| CN102199024B (en) * | 2011-04-29 | 2012-11-07 | 济南高新区工业废弃物利用研发中心 | Dry-mixed masonry mortar for industrial dust |
| CN109608147B (en) * | 2018-11-27 | 2021-09-03 | 温州市久丰建设有限公司 | Waterproof concrete and ground waterproof construction method |
-
2022
- 2022-04-29 CN CN202210472558.4A patent/CN114656229B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114656229A (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Effects of reactive MgO on durability and microstructure of cement-based materials: Considering carbonation and pH value | |
| CN106747128B (en) | A kind of big fluidised form High Strength Non-shrinking Filling Material and preparation method thereof | |
| CN106587788A (en) | Low-cement-content self-compacting concrete and preparation method thereof | |
| CN107572958A (en) | Ultra-low viscosity cement slurry and preparation method thereof | |
| CN112321231A (en) | Formula and preparation method of polymer composite flowing type dredging sludge solidified soil | |
| CN103496923A (en) | Rapid setting early-strength anti-aqueous dispersion grouting material and preparation method thereof | |
| CN109400080B (en) | Inorganic solidified fly ash filling material and preparation method thereof | |
| CN108558350A (en) | A kind of flyash injecting paste material and preparation method thereof | |
| CN105016675B (en) | A kind of preparation method of the high additive scrap glass powder self-compacting mortar with good volume stability | |
| Wei et al. | Study of untreated phosphogypsum as a fine aggregate for magnesium oxysulfate cement | |
| CN108911656A (en) | Non-evaporating curing concrete and preparation method thereof | |
| WO2024108868A1 (en) | Foamed lightweight soil based on expansive soil and industrial solid waste and preparation method therefor | |
| Xue et al. | Mechanical properties and drying shrinkage of graphite tailing-basalt fiber cement mortar | |
| CN109626884A (en) | Composite curing additive cement stabilized road base mixture and its application method | |
| Zhou et al. | Durability and hardened properties of 3D printed concrete containing bauxite tailings | |
| Deng et al. | Exploring macroscopic and microscopic impacts of alcohol amine modified with water-reducing agent on cementitious material and its application | |
| CN110041025A (en) | A kind of ameliorative mass concrete and preparation method thereof | |
| CN114656229B (en) | Mortar material for obtaining undisturbed soil samples in batches and sampling construction method | |
| CN110372279A (en) | A kind of construction method of core-shell structure haydite as concrete coarse aggregate | |
| CN109180110A (en) | Premixing wet mixing mortar and premixing wet mixing mortar preparation method | |
| CN114180864B (en) | Controllable low-strength material and preparation method thereof | |
| CN106278025B (en) | A kind of strong concrete and preparation method thereof | |
| CN105776986B (en) | Green cement class binder materials and preparation method thereof | |
| Liu et al. | Methods of improving the workability and mechanical properties of sulfoaluminate cement mortar | |
| CN115636641A (en) | High-impermeability graphene oxide concrete and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |