CN115073041A - Additive for controllable low-strength backfill material and preparation method thereof - Google Patents
Additive for controllable low-strength backfill material and preparation method thereof Download PDFInfo
- Publication number
- CN115073041A CN115073041A CN202110265466.4A CN202110265466A CN115073041A CN 115073041 A CN115073041 A CN 115073041A CN 202110265466 A CN202110265466 A CN 202110265466A CN 115073041 A CN115073041 A CN 115073041A
- Authority
- CN
- China
- Prior art keywords
- mother liquor
- backfill material
- retarder
- additive
- admixture
- Prior art date
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- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 27
- 239000000654 additive Substances 0.000 title claims abstract description 24
- 230000000996 additive effect Effects 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title description 5
- 239000012452 mother liquor Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000003112 inhibitor Substances 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 13
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 6
- 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 claims description 7
- 229930006000 Sucrose Natural products 0.000 claims description 7
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 6
- 235000012207 sodium gluconate Nutrition 0.000 claims description 6
- 229940005574 sodium gluconate Drugs 0.000 claims description 6
- 239000000176 sodium gluconate Substances 0.000 claims description 6
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000003945 anionic surfactant Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000004034 viscosity adjusting agent Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 description 10
- 239000002699 waste material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000009466 transformation 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
Abstract
The additive for the controllable low-strength backfill material is characterized by consisting of polycarboxylic acid mother liquor, a retarder, a viscosity regulator, a mud inhibitor, an air entraining agent, a defoaming agent and water. The additive can ensure the working performance of the additive in the construction process, realizes the self-leveling and self-compacting effects of filling, and avoids the compacting effect on conventional backfill materials.
Description
Technical Field
The invention relates to an additive for a controllable low-strength backfill material and a preparation method thereof.
Background
With the continuous development of economic society, the capital construction project and the transformation project of China meet the development peak, but simultaneously, a large amount of construction waste is generated. The classification work of the construction waste in China is carried out later, so that the construction waste has high impurity content, complex components and large quality difference, and the existing additive is difficult to meet the actual requirement.
The backfilling work after the original ground is excavated is involved in the construction and maintenance processes of infrastructure of a plurality of cities. However, in the process of construction, maintenance and repair, a large number of sinking diseases caused by insufficient backfill compaction appear, and the normal use and the service life of the structure are seriously influenced. In addition, when the urban road has dangerous situations such as road surface collapse, the traditional backfilling technology is difficult to meet the requirements of construction speed and construction quality. In addition, the sudden occurrence of natural disasters often causes serious damage to roads, which puts forward higher requirements on construction emergency, and the traditional backfilling technology is difficult to meet the requirements on speed and quality.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems of the existing admixture for the controllable low-strength backfill material, the invention provides a novel admixture for the controllable low-strength backfill material, so as to ensure the working performance of the admixture in the construction process, realize the self-leveling and self-compacting effects of filling and avoid the compacting effect on the conventional backfill material.
In order to solve the problems, the invention adopts the technical scheme that:
the additive for the controllable low-strength backfill material is characterized by consisting of polycarboxylic acid mother liquor, a retarder, a viscosity regulator, a mud inhibitor, an air entraining agent, a defoaming agent and water; the mass percentages of the components are respectively as follows: 30-45% of polycarboxylic acid mother liquor, 1-2% of retarder, 0.5-1.5% of viscosity regulator, 1.0-2.0% of mud inhibitor, 0.1-0.3% of air entraining agent, 0.05-0.15% of defoaming agent and the balance of water.
The polycarboxylic acid mother liquor is formed by mixing high water reduction type mother liquor, viscosity reduction type mother liquor and high slump retaining slow release type mother liquor, wherein the mass ratio of the high water reduction type mother liquor to the viscosity reduction type mother liquor to the high slump retaining slow release type mother liquor is 1-1.5:1-1.5: 1-1.5.
The retarder consists of white sugar, sodium gluconate and sodium tripolyphosphate, and the mass ratio of the white sugar to the sodium gluconate to the sodium tripolyphosphate is 1-2:1-3: 1-3.
The viscosity regulator is an anionic surfactant.
The air entraining agent is
An air entraining agent.
The preparation method of the additive for the controllable low-strength backfill material is characterized by comprising the following steps of weighing the polycarboxylic acid mother liquor, the retarder, the viscosity regulator, the mud inhibitor, the air entraining agent, the defoaming agent and the water according to the proportion, and stirring the components for 1-2 hours at normal temperature to obtain the additive for the controllable low-strength backfill material.
Has the advantages that:
the additive is mainly used for regenerating fine aggregates with the particle size of less than 4.75mm after construction waste screening, and can be prepared into a backfill material with low strength, self-leveling property and self-compacting property after being added, and the backfill material replaces the traditional backfill compacting material and is used for various excavation backfill constructions such as inspection well periphery backfill, platform (culvert) back backfill, pipeline backfill and the like.
Detailed Description
The invention will be further illustrated with reference to the following specific examples.
The additive for the controllable low-strength backfill material is characterized by consisting of polycarboxylic acid mother liquor, a retarder, a viscosity regulator, a mud inhibitor, an air entraining agent, a defoaming agent and water; the mass percentages of the components are respectively as follows: 30-45% of polycarboxylic acid mother liquor, 1-2% of retarder, 0.5-1.5% of viscosity regulator, 1.0-2.0% of mud inhibitor, 0.1-0.3% of air entraining agent, 0.05-0.15% of defoaming agent and the balance of water.
The polycarboxylic acid mother liquor is formed by mixing high water reduction type mother liquor, viscosity reduction type mother liquor and high slump retaining slow release type mother liquor, wherein the mass ratio of the high water reduction type mother liquor to the viscosity reduction type mother liquor to the high slump retaining slow release type mother liquor is 1-1.5:1-1.5: 1-1.5.
The retarder consists of white sugar, sodium gluconate and sodium tripolyphosphate, and the mass ratio of the white sugar to the sodium gluconate to the sodium tripolyphosphate is 1-2:1-3: 1-3. The retarder is added with white sugar products to implement standard GB 8076-1997.
The viscosity regulator is P8ZP8Z type anionic surfactant.
The mud inhibitor is a PC-10ZN mud inhibitor.
The air entraining agent is
An air entraining agent.
The preparation method of the additive for the controllable low-strength backfill material is characterized by comprising the following steps of weighing the polycarboxylic acid mother liquor, the retarder, the viscosity regulator, the mud inhibitor, the air entraining agent, the defoaming agent and the water according to the proportion, and stirring the components for 1-2 hours at normal temperature to obtain the additive for the controllable low-strength backfill material.
Example 1:
1) preparing 1000g of additive solution by using 150g of high water reduction type mother liquor, 100g of viscosity reduction type mother liquor, 100g of high slump loss resistant slow release type mother liquor, 20g of retarder, 15g of viscosity regulator, 10g of mud inhibitor, 1g of air entraining agent and 0.5g of defoaming agent and water;
2) and stirring the additive solution for 1-2 hours at normal temperature to obtain the additive for the controllable low-strength backfill material.
Example 2:
1) preparing 1000g of additive solution by 100g of high water reducing mother liquor, 150g of viscosity reducing mother liquor, 150g of high slump retaining slow release mother liquor, 10g of retarder, 5g of viscosity regulator, 10g of mud inhibitor, 1g of air entraining agent and 0.5g of defoaming agent and water;
2) and stirring the additive solution for 1-2 hours at normal temperature to obtain the additive for the controllable low-strength backfill material.
Example 3:
1) preparing 1000g of additive solution by using 150g of high water reducing mother liquor, 100g of viscosity reducing mother liquor, 100g of high slump retaining slow release mother liquor, 10g of retarder, 10g of viscosity regulator, 20g of mud inhibitor, 3g of air entraining agent and 1.5g of defoaming agent and water;
2) and stirring the additive solution for 1-2 hours at normal temperature to obtain the additive for the controllable low-strength backfill material.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. The additive for the controllable low-strength backfill material is characterized by consisting of polycarboxylic acid mother liquor, a retarder, a viscosity regulator, a mud inhibitor, an air entraining agent, a defoaming agent and water; the mass percentages of the components are respectively as follows: 30-45% of polycarboxylic acid mother liquor, 1-2% of retarder, 0.5-1.5% of viscosity regulator, 1.0-2.0% of mud retarder, 0.1-0.3% of air entraining agent, 0.05-0.15% of defoaming agent and the balance of water.
2. The admixture for the controlled low-strength backfill material according to the claim 1, wherein the polycarboxylic acid mother liquor is formed by mixing a high water-reducing mother liquor, a viscosity-reducing mother liquor and a high slump-retaining slow-release mother liquor, wherein the mass ratio of the high water-reducing mother liquor to the viscosity-reducing mother liquor to the high slump-retaining slow-release mother liquor is 1-1.5:1-1.5: 1-1.5.
3. The admixture for the controlled low-strength backfill material according to claim 1, wherein the retarder consists of white sugar, sodium gluconate and sodium tripolyphosphate, and the mass ratio of the white sugar to the sodium gluconate to the sodium tripolyphosphate is 1-2:1-3: 1-3.
4. The admixture for controlled low strength backfill material according to claim 1, wherein the viscosity modifier is an anionic surfactant.
5. The admixture for controlled low strength backfill material according to claim 1, characterized in that the air-entraining agent is
-iii air entraining agent.
6. A method for preparing the admixture for the controlled low-strength backfill material according to the claim 1 to 5, characterized in that the method comprises the following steps of weighing the polycarboxylic acid mother liquor, the retarder, the viscosity regulator, the mud inhibitor, the air entraining agent, the defoaming agent and the water according to the mixture ratio, and stirring the components for 1 to 2 hours at the normal temperature to obtain the admixture for the controlled low-strength backfill material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265466.4A CN115073041A (en) | 2021-03-11 | 2021-03-11 | Additive for controllable low-strength backfill material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265466.4A CN115073041A (en) | 2021-03-11 | 2021-03-11 | Additive for controllable low-strength backfill material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115073041A true CN115073041A (en) | 2022-09-20 |
Family
ID=83241285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110265466.4A Pending CN115073041A (en) | 2021-03-11 | 2021-03-11 | Additive for controllable low-strength backfill material and preparation method thereof |
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| Country | Link |
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| CN (1) | CN115073041A (en) |
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