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High fluidity grouting material and production method thereof

A grouting material and high fluidity technology, applied in the field of construction engineering, can solve problems such as increasing bleeding, and achieve the effects of stable quality, good durability and high strength

Active Publication Date: 2010-08-11
HUBEI CHIDGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing products usually improve fluidity by increasing the water-cement ratio. Although the fluidity can reach about 15 seconds when the water-cement ratio is increased to 0.3-0.4, the excess water increases the risk of bleeding. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Ordinary Portland cement 82% CSA expansion agent 10%

[0064] Calcite powder 8000 mesh 5% Calcite powder 4000 mesh 2%

[0065] Fly Ash 1%

[0066] Based on the sum of the above-mentioned 5 substances, measure (100%), and then add the following substances (an additional amount, the same below):

[0067] EEA plastic expansion agent 0.01% polycarboxylate superplasticizer 0.35%

[0068] The above raw materials were mixed for 8 minutes with a "twin-shaft blade gravity-free high-efficiency mixer" and then packaged. During on-site construction, the water-cement ratio is 0.28, and the weighing of water should be accurate to ±1%, and placed in the mixer. Start the mixer, add the grouting material at a low speed, after adding, stir at a high speed for 6 minutes to make a slurry. When the mixer is stirring at a low speed, the peripheral speed of the stirring blade is not lower than 2.5m / s, and when it is stirring at a high speed, the peripheral speed of the stirring blade is n...

Embodiment 2

[0071] Ordinary Portland cement 89% expansion agent 8%

[0072] Calcite powder 2% Mineral modification component 1%

[0073] Taking the sum of the above 4 substances as the base to measure (100%), then add the following substances, and the respective quantities are:

[0074] Plastic expansion agent 0.5% Anti-crack shrinkage reducing agent 0.5%

[0075] Polycarboxylate superplasticizer 0.36% Stabilizer 0.1%

[0076] Early strength agent 1% rust inhibitor 0.005%

[0077] Air-entraining agent 0.005% Defoamer 0.3%

[0078] The above raw materials were mixed for 8 minutes with a "twin-shaft blade gravity-free high-efficiency mixer" and then packaged. During on-site construction, the water-cement ratio is 0.28, and the weighing of water should be accurate to ±1%, and placed in the mixer. Start the mixer, add the grouting material at a low speed, after adding, stir at a high speed for 6 minutes to make a slurry. When the mixer is stirring at a low speed, the peripheral speed of...

Embodiment 3

[0081] Ordinary Portland cement 85% ZY expansion agent 10%

[0082] Calcite powder (5000 mesh) 3% fly ash 2%

[0083] Taking the sum of the above 4 substances as the base to measure (100%), then add the following substances, and the respective quantities are:

[0084] EEA plastic expansion agent 0.01% polycarboxylate superplasticizer 0.4%

[0085] Hydroxyethyl methylcellulose 0.01% Silicone defoamer 1%

[0086] The above raw materials are mixed for 5 minutes with a "twin-shaft blade gravity-free high-efficiency mixer" and then packaged. During on-site construction, the ambient temperature is 20°C, the water-cement ratio is 0.24, the weighing of water should be accurate to ±1%, and placed in the mixer. Start the mixer, add the grouting material at a low speed, after adding, stir at a high speed for 5 minutes to make a slurry. When the mixer is stirring at a low speed, the peripheral speed of the stirring blade is not lower than 2.5m / s, and when it is stirring at a high spee...

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Abstract

The invention discloses a high fluidity grouting material and a production method thereof. The high fluidity grouting material comprises the following components in percentage by weight: on the basis of 100 percent of total amount, 60 to 96 percent of conventional portland cement, 1 to 20 percent of calcite powder, 1 to 20 percent of a mineral modifying component, and 2 to 18 percent of swelling agent, wherein measuring on the basis of using the total amount of four substances as base number, 0.01 to 4 weight percent of high efficiency slushing agent and 0.0005 to 1 weight percent of plasticity swelling agent are added in the mixture of the four substances. The high fluidity grouting material can be made of raw materials mixed by adopting a dual-shaft paddle non-gravity high-efficiency mixer. The material has simple industrialized production process and stable product quality, adopts the water-cement ratio of between 0.24 and 0.28, is evenly blended by water with neutral pH value, and has the advantages of high fluidity, no bleeding, no segregation or layering, slight swelling, easy pump delivery, good durability and the like after the material is uniformly mixed by water.

Description

technical field [0001] The invention relates to a high fluidity grouting material and a production method thereof, belonging to the field of construction engineering. Background technique [0002] With the development of bridge prestressed structure, the repair of cracks in various civil engineering structures, the fixing and installation of large and important equipment, etc., grouting materials are required to be used, and grouting materials are more and more widely used, and the demand is also increasing. . The quality of fluidity is the primary factor to evaluate whether the grouting material meets the standard, and the primary condition to ensure the smooth progress of the pumping and construction of the grouting material. Most of the grouting materials have low fluidity, which seriously affects the construction, and then affects the stability, durability and service life of the material. However, some grouting materials have performance defects. During construction, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2111/70Y02W30/91C04B7/323C04B14/28C04B18/08C04B18/12C04B18/141C04B22/008C04B22/143C04B2103/0068C04B2103/302C04B2103/304C04B2103/44C04B2103/50C04B2103/58C04B2103/61C04B22/08C04B24/00C04B24/02C04B24/023C04B24/045C04B24/085C04B24/10C04B24/122C04B24/123C04B24/2641C04B24/32C04B24/34C04B24/383
Inventor 侯书恩周强靳洪允黄玉娟陈江
Owner HUBEI CHIDGE TECH
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