CN111620589A - Cement grouting material additive capable of adapting to various working conditions and improving performance of grouting material and preparation method and application thereof - Google Patents
Cement grouting material additive capable of adapting to various working conditions and improving performance of grouting material and preparation method and application thereof Download PDFInfo
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- CN111620589A CN111620589A CN202010336343.0A CN202010336343A CN111620589A CN 111620589 A CN111620589 A CN 111620589A CN 202010336343 A CN202010336343 A CN 202010336343A CN 111620589 A CN111620589 A CN 111620589A
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- 239000000463 material Substances 0.000 title claims abstract description 137
- 239000004568 cement Substances 0.000 title claims abstract description 57
- 239000000654 additive Substances 0.000 title claims abstract description 40
- 230000000996 additive effect Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 32
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 32
- 239000011707 mineral Substances 0.000 claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 32
- 239000011148 porous material Substances 0.000 claims abstract description 24
- 239000008394 flocculating agent Substances 0.000 claims abstract description 22
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 20
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 20
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- 239000011777 magnesium Substances 0.000 claims abstract description 18
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims description 10
- 239000004115 Sodium Silicate Substances 0.000 claims description 9
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 9
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 9
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical group [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 9
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 9
- 229920002401 polyacrylamide Polymers 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 9
- 235000002906 tartaric acid Nutrition 0.000 claims description 9
- 239000011975 tartaric acid Substances 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical group [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 230000003487 anti-permeability effect Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004570 mortar (masonry) Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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 cement grouting material additive capable of adapting to various working conditions and improving the performance of a grouting material, and a preparation method and application thereof, wherein the cement grouting material additive mainly comprises the following components: 0-4 parts of an early strength agent, 0-4 parts of a retarder and 1-2 parts of a flocculating agent; 1-2 parts of an expanding agent, 1-2 parts of a water reducing agent, 1-2 parts of an air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash. The cement grouting material additive can effectively simplify the mixing process of the grouting material, can be suitable for various construction conditions such as large-pore flow and small-pore micro-leakage, and has the effects of improving the working performance, the anti-permeability performance and the basic mechanical property of the grouting material; and the grouting material additive is simple and convenient to manufacture and convenient to construct, and more importantly, the components of the grouting material additive can be adjusted according to different working conditions, so that the grouting material can be improved according to requirements.
Description
Technical Field
The invention relates to a cement grouting material additive, in particular to a cement grouting material additive capable of adapting to various working conditions and improving the performance of a grouting material, and a preparation method and application thereof.
Background
The grouting material additive is a chemical substance which is added in the process of stirring the grouting material and can obviously improve the performance of the grouting material. The admixture has the characteristics of multiple varieties, small mixing amount, great influence on the performance of the grouting material, low investment, quick response and obvious technical and economic benefits. With the continuous progress of scientific technology, the additive is increasingly applied. Three are common:
the admixture of the high-efficiency water reducing agent is widely used, namely, a certain water reducing agent is added into the grouting material, so that the fluidity is increased, and the cost is saved. In the specific implementation process, the problem of controlling the overproof water reducing agent is a key point, and once the water reducing agent is excessive, the grouting material has low early strength and even can not be solidified.
The inorganic retarder and the organic retarder are two retarder types. The inorganic retarder reacts with the grouting material to form an insoluble film on the surface of the grouting material, so that the aim of delaying the setting time of the grouting material is fulfilled; the organic retarder can be attached to the surface of concrete, and can be attached to new substances in the hydration hardening process of the grouting material, and the stability of the grouting material is guaranteed, so that the internal structure of the crystal is changed. The two reaction mechanisms can delay the setting time of the grouting material.
The air entraining agent is mainly used for forming closed small bubbles when the grouting material is stirred, so that the durability of the grouting material is improved, the compressive strength is slightly lost, and the toughness is increased. And the anti-permeability performance of the hardened grouting material can be improved.
However, the additives have single effect, construction can be performed only by selecting one or more additives in a large amount of time and designing proper mixing amount in projects with complicated working conditions, and the selection and mixing amount of the additives in different working conditions need to be redesigned, so that the use is complicated.
The hollowing is caused by the air in the original masonry and the plaster layer, and during detection, a hollowing hammer or a hard object is used for tapping the plaster layer and the leveling layer to generate clattering sound to form the hollowing. In the prior art, the mortar or cement grouting material has large porosity once the mixture ratio is poor, and water leakage, water seepage and overcast and humid water can be caused by large water flow due to obvious hollowing or no obvious hollowing.
Therefore, if a cement grouting material additive which can adapt to various working conditions and improve the performance of the grouting material is developed, the mixing process of the grouting material can be greatly simplified, and the performance of mortar or cement grouting material can be effectively improved.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides the cement grouting material additive which can adapt to various working conditions and improve the performance of the grouting material. The cement grouting material additive capable of adapting to various working conditions and improving the performance of the grouting material has the effects of improving the working performance, the impermeability and the basic mechanical property of the grouting material; and the manufacturing is simple and convenient, and the construction is convenient. More importantly, the components of the admixture of the cement grouting material can be adjusted according to different working conditions, so that the cement grouting material is improved according to requirements.
The invention also provides a preparation method, application and a use method of the cement grouting material additive capable of adapting to various working conditions and improving the performance of the grouting material.
The technical scheme is as follows: in order to achieve the purpose, the cement grouting material additive capable of adapting to various working conditions and improving the performance of the grouting material is mainly prepared from the following raw materials, by weight, 0-4 parts of an early strength agent, 0-4 parts of a retarder and 1-2 parts of a flocculating agent; 1-2 parts of an expanding agent, 1-2 parts of a water reducing agent, 1-2 parts of an air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash.
Preferably, the cement grouting material admixture is mainly prepared from the following raw materials in parts by weight for large-pore and large-flow-rate projects: 4 parts of an early strength agent, 0 part of a retarder, 2 parts of a flocculating agent, 1-2 parts of an expanding agent, 1-2 parts of a water reducing agent, 1-2 parts of an air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash.
Preferably, the cement grouting material admixture is mainly prepared from the following raw materials in parts by weight for small-pore micro-leakage engineering: 0 part of early strength admixture, 4 parts of retarder, 1 part of flocculating agent, 1-2 parts of expanding agent, 1-2 parts of water reducing agent, 1-2 parts of air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash.
The large-pore and large-flow engineering in the invention means that the ground or the wall has hollowing and obvious flowing water, while the small-pore and micro-leakage engineering means that no obvious hollowing exists, but the base surface is wet or has clear water.
Preferably, the early strength agent and the retarder are not used at the same time, and one of the early strength agent and the retarder is used; in addition, under a certain working condition, both the water leakage prevention device and the water leakage prevention device can be not used, for example, the water leakage phenomenon of the middle pore size is solved, namely, the existence of hollowing which is not particularly obvious is ensured, and certain water seepage is accompanied.
Preferably, the early strength agent is lithium carbonate and sodium silicate which are mixed in a mass ratio of 0.9: 1-1: 0.9, and the preferred ratio is 1: 1. The lithium carbonate mainly accelerates the initial setting speed of the grouting material, the sodium silicate mainly accelerates the final setting speed of the grouting material, and the combined action of the lithium carbonate and the sodium silicate can enable the grouting material to have early strength performance.
Wherein, the retarder is tartaric acid, and the function of the retarder is mainly to slow down the coagulation speed of the grouting material.
The flocculating agent is polyacrylamide, and the effect of the flocculating agent is mainly to enable the grouting material to have anti-washout performance.
The expanding agent is magnesium oxide, and the expanding agent mainly has the effect of slightly expanding the hardened grouting material to compensate the volume contraction of the grouting material caused by hydration heat.
The water reducing agent is a polycarboxylic acid water reducing agent, and the water reducing agent mainly has the function of increasing the fluidity of the grouting material and enabling the grouting material to penetrate into tiny gaps.
The air entraining agent is sodium dodecyl benzene sulfonate and has the main function of generating a large amount of micro bubbles in the grouting material to form closed bubbles and increase the impermeability and compressive strength of the hardened grouting material.
The magnesium fluosilicate mainly has the effect of enabling the grouting material to have higher strength, and the calcium hydroxide mainly has the effect of increasing the content of the calcium hydroxide after the grouting material is hydrated, so that the grouting material has certain self-healing performance.
Preferably, the mineral powder is 400-mesh mineral powder, and the mineral powder mainly has the effects of increasing the compactness of the grouting material and increasing the anti-permeability performance of the grouting material.
The fly ash is mainly used for increasing the compactness and the fluidity of the grouting material and improving the anti-permeability performance of the grouting material.
The preparation method of the cement grouting material additive capable of adapting to various working conditions and improving the performance of the grouting material comprises the following steps:
weighing the following components in proportion: the early strength agent, the retarder, the flocculating agent, the expanding agent, the water reducing agent, the air entraining agent, the magnesium fluosilicate, the calcium hydroxide, the mineral powder and the fly ash are all added into a powdery material stirrer, and all the components are fully and uniformly stirred in the powdery material stirrer.
The invention relates to an application of a cement grouting material additive capable of adapting to various working conditions and improving the performance of a grouting material in preparation of an anti-seepage cement grouting material.
Further, the specific use method of the application comprises the following steps:
the admixture is firstly mixed into the cement grouting material to be used, and then the grouting material is stirred in a conventional mode.
The cement grouting material additive can be applied to various construction conditions, and the solidification speed of the grouting material is changed mainly by changing the doping amount of the early strength agent and the retarder, so that the cement grouting material additive can respectively cope with large flow rate of large pores and small pore micro-leakage.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. the cement grouting material additive can improve the permeability resistance, the working performance, the basic mechanical performance and other properties of the cement grouting material by only adding the additive; the setting time can be adjusted, the multiple properties of the grouting material mortar are improved by adding the mortar once, the compressive strength is high, compared with the common mortar, the micro-shrinkage defect of the mortar can be overcome, and the mortar has the advantages of micro-expansion and high water pressure resistance;
2. the admixture of the cement grouting material can respectively cope with the conditions of large flow rate of large pores and small pore micro leakage by adjusting the mixing amount of the early strength agent and the retarder;
3. the flocculating agent in the cement grouting material additive of the invention ensures that the grouting material can resist water dispersion and can cope with water seepage holes with larger flow velocity;
4. the calcium hydroxide in the cement grouting material additive can realize self-healing of the cement grouting material, the hardened grouting material has self-healing performance due to the cement grouting material additive, the self-healing performance of the grouting material can be improved by increasing the calcium hydroxide content of the hardened grouting material, the cement grouting material additive has secondary anti-permeability performance, and certain remedy is realized for the cracking phenomenon of the grouting material in areas with large temperature difference after hardening. In conclusion, the additive for the cement grouting material, which can adapt to various working conditions and improve the performance of the grouting material, has the functions of improving the working performance, the impermeability and the basic mechanical property of the cement grouting material; the grouting material mixing process can be effectively simplified, and the grouting material mixing device is simple and convenient to manufacture and convenient to construct. More importantly, the components of the admixture of the cement grouting material can be adjusted according to different working conditions, so that the cement grouting material is improved according to requirements.
Detailed Description
The following examples are further illustrated.
All raw materials of the invention are commercially available building materials or industrial auxiliaries, and can be commercially available conventional raw materials.
The raw materials used in the following examples are as follows:
lithium carbonate (Shanghai Europe gold industry Co., Ltd., content 99%)
Sodium silicate (Guangdong Hongxin biotechnology limited)
Tartaric acid (Guangzhou city Changle trade company)
Magnesium fluosilicate (Jinhuafenghui Ji, Jinan, Biotech Co., Ltd.)
Polyacrylamide (Ningtong chemical Co., Ltd., Ningchun city, molecular weight 1200 ten thousand, cation)
Polycarboxylic acid water reducing agent (Shanghai Qishuo industries Co., Ltd., polycarboxylic acid high performance water reducing agent QS-8011L)
Sodium dodecyl benzene sulfonate (Binzhou Dengshan chemical Co., Ltd.)
The mineral powder is 400 mesh (Nanjing Baiyang chemical Co., Ltd.)
Fly ash (Changxinghua Fei chemical Co., Ltd.)
Example 1
Engineering for large pore and large flow
The components are as follows:
4 parts of early strength agent, 0 part of retarder, 2 parts of flocculant, 2 parts of expanding agent, 2 parts of water reducing agent, 2 parts of air entraining agent, 2 parts of magnesium fluosilicate, 9 parts of calcium hydroxide, 50 parts of mineral powder and 35 parts of fly ash.
The early strength agent is formed by mixing lithium carbonate and sodium silicate according to the mass ratio of 1: 1. The retarder is tartaric acid, the flocculating agent is polyacrylamide, the expanding agent is magnesium oxide, the water reducing agent is polycarboxylic acid, the air entraining agent is sodium dodecyl benzene sulfonate, and the mineral powder is 400-mesh mineral powder.
Example 2
Engineering for small pore microleakage
The components are as follows:
0 part of early strength agent, 4 parts of retarder, 1 part of flocculant, 2 parts of expanding agent, 2 parts of water reducing agent, 1 part of air entraining agent, 2 parts of magnesium fluosilicate, 9 parts of calcium hydroxide, 50 parts of mineral powder and 35 parts of fly ash.
The early strength agent is formed by mixing lithium carbonate and sodium silicate according to the mass ratio of 1: 1. The retarder is tartaric acid, the flocculating agent is polyacrylamide, the expanding agent is magnesium oxide, the water reducing agent is polycarboxylic acid, the air entraining agent is sodium dodecyl benzene sulfonate, and the mineral powder is 400-mesh mineral powder.
Example 3
Engineering for large pore and large flow
The components are as follows:
4 parts of early strength agent, 0 part of retarder, 2 parts of flocculant, 2 parts of expanding agent, 2 parts of water reducing agent, 2 parts of air entraining agent, 2 parts of magnesium fluosilicate, 9 parts of calcium hydroxide, 50 parts of mineral powder and 35 parts of fly ash.
The early strength agent is formed by mixing lithium carbonate and sodium silicate according to the mass ratio of 0.9: 1. The retarder is tartaric acid, the flocculating agent is polyacrylamide, the expanding agent is magnesium oxide, the water reducing agent is polycarboxylic acid, the air entraining agent is sodium dodecyl benzene sulfonate, and the mineral powder is 400-mesh mineral powder.
Example 4
Engineering for small pore microleakage
0 part of early strength agent, 3 parts of retarder, 1 part of flocculant, 1 part of expanding agent, 1 part of water reducing agent, 1 part of air entraining agent, 1 part of magnesium fluosilicate, 9 parts of calcium hydroxide, 45 parts of mineral powder and 30 parts of fly ash.
The retarder is tartaric acid, the flocculating agent is polyacrylamide, the expanding agent is magnesium oxide, the water reducing agent is polycarboxylic acid, the air entraining agent is sodium dodecyl benzene sulfonate, and the mineral powder is 400-mesh mineral powder.
Example 5
Engineering for large pore and large flow
3 parts of an early strength agent, 0 part of a retarder and 2 parts of a flocculating agent; 2 parts of an expanding agent, 2 parts of a water reducing agent, 2 parts of an air entraining agent, 2 parts of magnesium fluosilicate, 10 parts of calcium hydroxide, 52 parts of mineral powder and 37 parts of fly ash.
The early strength agent is formed by mixing lithium carbonate and sodium silicate according to the mass ratio of 1: 0.9. The retarder is tartaric acid, the flocculating agent is polyacrylamide, the expanding agent is magnesium oxide, the water reducing agent is polycarboxylic acid, the air entraining agent is sodium dodecyl benzene sulfonate, and the mineral powder is 400-mesh mineral powder.
Example 6
Engineering against water leaks of moderate pore size
0 part of early strength agent, 0 part of retarder and 1 part of flocculating agent; 1 part of expanding agent, 1 part of water reducing agent, 1 part of air entraining agent, 1 part of magnesium fluosilicate, 9 parts of calcium hydroxide, 45 parts of mineral powder and 30 parts of fly ash.
The retarder is tartaric acid, the flocculating agent is polyacrylamide, the expanding agent is magnesium oxide, the water reducing agent is polycarboxylic acid, the air entraining agent is sodium dodecyl benzene sulfonate, and the mineral powder is 400-mesh mineral powder.
Example 7
The components were weighed out in the formulation ratio according to any of examples 1-6.
Weighing the following components in proportion: the early strength agent, the retarder, the flocculating agent, the expanding agent, the water reducing agent, the air entraining agent, the magnesium fluosilicate, the calcium hydroxide, the mineral powder and the fly ash are all added into a powdery material stirrer, and all the components are fully and uniformly stirred in the powdery material stirrer.
Example 8
The admixture for the cement grouting material in any one of the embodiments 1 to 6 is adopted, firstly, the admixture is mixed into the cement grouting material to be used, and then, the mortar is stirred according to a conventional mode, wherein the adding amount of the admixture is 5 percent of the mass of the cement grouting material.
Test example 1
Referring to the method for testing water consumption, setting time and stability of standard consistency of cement (GB/T1346-2011), the admixtures (5% added) prepared in example 1 and example 2 of the product are used to prepare standard consistency cement paste to test initial setting time and final setting time and compare the initial setting time and the final setting time, and the test results are shown in Table 1.
TABLE 1
| Serial number | Item | Example 1 | Example 2 |
| 1 | Initial setting time | 5h | 30min |
| 2 | Final setting time | 12h | 65min |
From the above table 1, it can be seen that the embodiment 1 is suitable for being used in large-pore and large-flow water engineering, and the embodiment 2 is suitable for being used in small-pore and micro-leakage engineering, where large pores need to be solidified quickly and are not washed away by water; the small pores are slow to permeate, the required setting time is long, the materials can permeate into the pores for enough time, the setting time of the mortar is obviously influenced by the change of the retarder and the early strength dosage, and the mortar can be suitable for different working conditions; the setting time of the cement paste without the additive is 200min for initial setting and 330min for final setting. The cement grouting material admixture of the invention can effectively adjust the setting time,
test example 2
Referring to the standard of basic mechanical property experimental method of building mortar (JGJ/T70-2009), mortar test blocks were prepared using the additive (5% added) prepared in example 2 of the present invention to test various performance indexes and compared with ordinary mortar without the additive of the present invention, and the test results are shown in table 2.
TABLE 2
Note: the normal mortar has 70% strength of 20 mpa.
The above table 2 shows that the cement grouting material additive has obvious improvement effect on the impermeability, the working performance and the basic mechanical property of the grouting material, can adjust the setting time, improves the multiple properties of the grouting material mortar by adding once, has large compressive strength and rapid strength development, can overcome the defects of micro shrinkage and cracks caused by shrinkage compared with the common grouting material, has the advantages of micro expansion and higher impermeability pressure, can realize the self-healing of the cement grouting material, and has secondary impermeability. The efficacy of the admixture prepared by other embodiments of the invention is the same as that of the embodiment 2.
Claims (10)
1. The cement grouting material additive capable of adapting to various working conditions and improving the performance of a grouting material is characterized by being mainly prepared from the following raw materials in parts by weight: 0-4 parts of an early strength agent, 0-4 parts of a retarder and 1-2 parts of a flocculating agent; 1-2 parts of an expanding agent, 1-2 parts of a water reducing agent, 1-2 parts of an air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash.
2. The admixture for cement grouting material capable of adapting to various working conditions and improving grouting material performance of claim 1, wherein the admixture for cement grouting material is mainly prepared from the following raw materials in parts by weight for large-pore and large-flow-rate projects: 4 parts of an early strength agent, 0 part of a retarder, 2 parts of a flocculating agent, 1-2 parts of an expanding agent, 1-2 parts of a water reducing agent, 1-2 parts of an air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash.
3. The admixture for cement grouting material capable of adapting to various working conditions and improving grouting material performance of claim 1, wherein the admixture for cement grouting material is mainly prepared from the following raw materials in parts by weight for small-pore micro-leakage engineering: 0 part of early strength admixture, 4 parts of retarder, 1 part of flocculating agent, 1-2 parts of expanding agent, 1-2 parts of water reducing agent, 1-2 parts of air entraining agent, 1-2 parts of magnesium fluosilicate, 9-10 parts of calcium hydroxide, 45-52 parts of mineral powder and 30-37 parts of fly ash.
4. The cement grouting material additive capable of adapting to various working conditions and improving the performance of a grouting material according to claim 1, wherein the early strength agent is preferably lithium carbonate and sodium silicate which are mixed in a ratio of 0.9: 1-1: 0.9.
5. The cement-grouting material additive capable of adapting to various working conditions and improving grouting material performance of claim 1, wherein the retarder is tartaric acid, and the flocculating agent is polyacrylamide.
6. The admixture for cement grouting material capable of adapting to various working conditions and improving grouting material performance of claim 1, wherein the expanding agent is magnesium oxide, and the water reducing agent is polycarboxylic acid.
7. The cement grouting material additive capable of adapting to various working conditions and improving the performance of the grouting material according to claim 1, wherein the air-entraining agent is sodium dodecyl benzene sulfonate.
8. The preparation method of the cement grouting material additive capable of adapting to various working conditions and improving the performance of the grouting material, which is characterized by comprising the following steps:
weighing the following components in proportion: the early strength agent, the retarder, the flocculating agent, the expanding agent, the water reducing agent, the air entraining agent, the magnesium fluosilicate, the calcium hydroxide, the mineral powder and the fly ash are all added into a material mixer, and all the components are fully and uniformly mixed in a powdery material mixer.
9. The use of the additive for cement grouting material capable of adapting to various working conditions and improving the performance of grouting material in claim 1 in the preparation of anti-seepage cement grouting material.
10. The application according to claim 9, wherein the specific using method of the application comprises the following steps:
the admixture is firstly mixed into the cement grouting material to be used, and then the grouting material is stirred.
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