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Cement mixing pile composite additive, curable material and preparation method of composite additive

A cement mixing pile and composite additive technology, which is applied in the field of cement mixing pile composite additives, can solve the problems of large amount of curing agent, long pile-forming time, and low strength, and achieve low cost, enhanced consolidation of pile-forming performance, and high strength. The effect of improving stability

Active Publication Date: 2016-08-31
HANGZHOU LAIBAODE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, cement mixing piles are usually mixed with cement, fly ash or other mineral admixtures, and solidified by dry or wet methods to improve the strength of the pile foundation. However, the amount of curing agent currently used is relatively large, and the cost is relatively high. In the process of foundation treatment, there are problems such as low strength and long pile-forming time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The materials were weighed according to the following percentages: 5% of nano-silicon dioxide, 15% of triethanolamine, 15% of water glass, 15% of dispersant, 5% of sodium carbonate, 1% of activator, and the balance of water. Mix the dispersant, nano silicon dioxide, water glass and water, stir at a low speed for 30 minutes, and then stir at a high speed for 10 minutes to prepare a mixed solution A. Then add the triethanolamine and the activator to the mixed solution A, and stir at a constant speed for 30 minutes to obtain the required composite additive for cement mixing piles.

[0022] The soil sample selected for the test is deep soft soil, which is low in strength and rich in organic matter. The standard value of the foundation bearing capacity is only 50KPa, which is a typical soft soil foundation. The moisture content of the soil sample is 36.3%, and the apparent density of the soil sample is 1700kg / m3 .

[0023] The cement mixing pile composite cement mentioned i...

Embodiment 2

[0028] Materials were weighed according to the following percentages: 8% of nano-silica, 15% of triethanolamine, 15% of water glass, 10% of dispersant, 5% of sodium carbonate, 1.5% of activator, and the balance of water. Mix the dispersant, nano silicon dioxide, water glass and water, stir at a low speed for 30 minutes, and then stir at a high speed for 10 minutes to prepare a mixed solution A. Then add the triethanolamine and the activator to the mixed solution A, and stir at a constant speed for 30 minutes to obtain the required composite additive for cement mixing piles.

[0029] The soil sample selected for the test is organic silt soil, which is rich in organic matter and has a high moisture content of more than 40%, which means it has no bearing capacity.

[0030] The cement mixing pile composite cement mentioned in the present invention adopts former soil sample: P.O42.5 cement is 1:0.15, and gypsum consumption is 4% of cement consumption, and cement mixing pile composi...

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Abstract

The invention discloses a cement mixing pile composite additive and a preparation method thereof. The cement mixing pile composite additive is composed of the following raw materials by mass percentage: 5%-10% of nano-silica, 15%-20% of triethanolamine, 10%-15% of water glass, 10%-15% of a dispersant, 5%-8% of sodium carbonate, 1%-1.5% of an exciting agent, and the balance water. Through compound use of the cement mixing pile composite additive with cement and gypsum, under the circumstance of not changing existing construction equipment and process, cement can be saved and the material cost can be lowered; or under the condition of maintaining a same cost, the pile strength can be improved, the cement mixing pile composite additive especially has a special consolidation strengthening effect on improvement of the pile-forming performance of organic soil, peat soil, river silt and other projects.

Description

technical field [0001] The invention relates to the field of admixture production, in particular to a composite additive for cement mixing piles, which is used for solidifying piles of organic soil, river pond silt, and the like. Background technique [0002] Cement-soil mixing pile composite foundation reinforcement treatment technology is often used to reinforce saturated soft clay low foundations, usually using cement, fly ash, etc. , using a series of physical and chemical reactions between the curing agent and the soft soil to harden the soft soil into a high-quality foundation with integrity, water stability and set strength. The cement mixing pile composite additive is mixed with the curing agent to achieve the effect of mixing reinforcement. [0003] At present, cement mixing piles are usually mixed with cement, fly ash or other mineral admixtures, and solidified by dry or wet methods to improve the strength of the pile foundation. However, the amount of curing agen...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B28/04
CPCC04B28/04C04B40/0039C04B2201/50C04B14/062C04B24/121C04B22/08C04B2103/408C04B22/10C04B2103/0068C04B22/143
Inventor 张津践朱蓬莱牛茂威张小兵
Owner HANGZHOU LAIBAODE NEW MATERIAL TECH CO LTD
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