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High fluidization micro expansive high-strength grouting material

A grouting and micro-expansion technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of slow strength development, surface voids, and small effective bearing surface of the substrate, and achieve early and late stage improvement. The effect of strength, improving workability, improving workability and later mechanical properties

Active Publication Date: 2015-03-11
中建西部建设西南有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still some shortcomings in the development of cement grouting materials, mainly including the problems of small effective bearing surface with the matrix caused by insufficient early plastic expansion of grouting materials, surface voids and slow strength development in the later stage.

Method used

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  • High fluidization micro expansive high-strength grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A large fluid micro-expansion high-strength grouting material, its raw materials are calculated by mass percentage: ordinary portland cement 23%, silica fume 3%, microbeads 5%, phosphorus slag composite powder 7%, quartz powder 3%, fine Aggregate 54.79%, water reducer 0.7%, defoamer 0.01%, expansion agent 3%, early strength agent 0.5%.

[0029] In this example, the content of active silica in silica fume is 92%, and the specific surface area is 20000m 2 / kg; the specific surface area of ​​microbeads is 850m 2 / kg; the mass percentage of phosphorus slag powder in phosphorus slag composite powder is 70%, the mass percentage of limestone powder is 30%, and the specific surface area of ​​phosphorus slag composite powder is 610m 2 / kg; the quartz powder of each particle size in the quartz powder is calculated as 15% of the 120-200 mesh quartz powder, 20% of the 200-260 mesh quartz powder, 30% of the 260-325 mesh quartz powder, and 35% of the 325-600 mesh quartz powder. %. ...

Embodiment 2

[0031] A large fluid micro-expansion high-strength grouting material, the components of which are calculated by mass percentage: 33% of ordinary portland cement, 3.5% of encrypted silica fume, 3% of microbeads, 6% of phosphorus slag composite powder, and 3% of quartz powder %, fine aggregate 47.08%, water reducer 0.9%, defoamer 0.02%, expansion agent 2.5%, early strength agent 1%.

[0032] In this example, the content of active silica in silica fume is 92%, and the specific surface area is 22000m 2 / kg; the specific surface area of ​​microbeads is 950m 2 / kg; the mass percentage of phosphorus slag powder in phosphorus slag composite powder is 80%, the mass percentage of limestone powder is 20%, and the specific surface area of ​​phosphorus slag composite powder is 630m 2 / kg; the quartz powder of each particle size in the quartz powder is calculated as 20% of the 120-200 mesh quartz powder, 25% of the 200-260 mesh quartz powder, 20% of the 260-325 mesh quartz powder, and 35% o...

Embodiment 3

[0034] A large fluid micro-expansion high-strength grouting material, its components are calculated by mass percentage: ordinary Portland cement 34%, encrypted silica fume 3.5%, microbeads 3%, phosphorus slag composite powder 5%, quartz powder 3.5% %, fine aggregate 46.47%, water reducer 1%, defoamer 0.03%, expansion agent 2.5%, early strength agent 1%.

[0035] In this example, the content of active silica in silica fume is 94%, and the specific surface area is 25000m 2 / kg; the specific surface area of ​​microbeads is 1000m 2 / kg; the mass percentage of phosphorus slag powder in phosphorus slag composite powder is 90%, the mass percentage of limestone powder is 10%, and the specific surface area of ​​phosphorus slag composite powder is 650m 2 / kg; Quartz powder of each particle size in quartz powder is calculated as 10% of 120-200 mesh quartz powder, 20% of 200-260 mesh quartz powder, 20% of 260-325 mesh quartz powder, and 50% of 325-600 mesh quartz powder. %; the mass per...

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Abstract

The invention discloses a high fluidization micro expansive high-strength grouting material which comprises the following raw materials by mass percentage: 23-34% of cement, 3-5% of microbead, 5-7.5% of phosphorus slag composite powder, 2.5-3.5% of silica fume, 2.5-3.5% of quartz powder, 46-55% of fine aggregate, 0.7-1% of water reducer, 0.01-0.03% of defoaming agent, 2.5-3.5% of expanding agent and 0.5-1% of early strength agent. The grouting material has the advantages of high strength in the early stage and later stage, good flowing property and adjustable expansiveness by taking the cement as a major binding material and employing the silica fume, the microbead and the phosphorus slag composite powder with different hydration activities together with a chemical additive matched with a binding material system and an aggregate system with reasonable gradation, and is particularly applicable to high precision equipment mounting, secondary grouting of an equipment foundation, bolt anchoring, crack repairing, duct grouting and the like.

Description

technical field [0001] The invention belongs to the field of inorganic grouting materials, and in particular relates to a large-flow micro-swelling high-strength grouting material. Background technique [0002] At present, cement-based materials have become the most widely used man-made building materials. Due to their high strength, good durability, wide selection of materials, and low cost, they have been widely used in various construction and transportation projects. But in the process of use, it also has some limitations, such as high brittleness, easy to crack under the alternating action of temperature and humidity, etc., especially the role of cement-based materials used in roads under vehicle load, cyclic wear and environmental factors It is more prone to surface erosion, arching, cracking and other phenomena. In addition, with the development of mechanical equipment in the direction of large-scale and precision, higher requirements for precision and speed are put ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/30C04B14/06
CPCY02W30/91
Inventor 陈景甘戈金卢佳林刘永道黄海珂王晶晶
Owner 中建西部建设西南有限公司
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