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High-strength non-shrinkage grouting material with early strength and autogenous curing function and preparation method of grouting material

A non-shrinking, self-curing technology, applied in the field of concrete, can solve the problems of the grouting material cannot achieve the desired effect, the distribution of aggregate particle size is single, and the bonding performance of the grouting material is poor. good effect of cooperation

Active Publication Date: 2015-04-01
JIANGXI PINGXIANG CITY LIANYOU BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The non-shrinkage grouting materials currently used in the market include CGM1-4 series high-strength non-shrinkage grouting materials; which use high-strength materials as aggregates, cement as binders, admixtures, etc. to mix and configure; but the existing grouting Most of the materials use a single ordinary cement as a binder. Due to the special characteristics of ordinary cement, such as solidification self-shrinkage and high heat of hydration, cracks occur in concrete components, and the distribution of aggregate particle size is single, and the type of admixture is also relatively single, resulting in stickiness of grouting materials. Poor knot performance and low thickening effect, the prepared grout is prone to shrinkage, cracking and delamination, which leads to the failure of the grout to achieve the desired effect

Method used

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  • High-strength non-shrinkage grouting material with early strength and autogenous curing function and preparation method of grouting material
  • High-strength non-shrinkage grouting material with early strength and autogenous curing function and preparation method of grouting material
  • High-strength non-shrinkage grouting material with early strength and autogenous curing function and preparation method of grouting material

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The distribution ratio of each component: A cement mixture 40 parts, B fine aggregate 55 parts, C steel fiber 3.5 parts, D premix 1.5 parts.

[0023] The above-mentioned fine aggregate is a mixture of 30-mesh quartz sand and 80-mesh quartz sand, and the weight mixing ratio of the two is 1:3. The above-mentioned cement mixture is compounded by P.II 52.5Mpa cement and special quick-hardening cement (such as Wuxi Yaowei Building Materials Co., Ltd. double-fast cement), and the weight ratio of the two is 52.5 cement: quick-hardening cement=1: 1. The steel fiber described is steel fiber with a length of 40mm and a diameter of 0.5mm; adding this specification of steel fiber makes the grouting material have strong tensile, compressive, wear-resistant, crack-resistant, and bending-resistant ability.

[0024] The above-mentioned premix is ​​60 parts of polycarboxylate superplasticizer, 20 parts of polyacrylamide, 15 parts of viscosity modifier, and 5 parts of internal curing ag...

Embodiment 2

[0027] The distribution ratio of each component: A cement mixture 45 parts, B fine aggregate 52 parts, C steel fiber 2.5 parts, D premix 0.5 parts.

[0028] The above-mentioned fine aggregate is a mixture of 50-mesh quartz sand and 100-mesh quartz sand, and the weight mixing ratio of the two is 1:2. The above-mentioned cement mixture is compounded by P.II 52.5Mpa cement and special quick-hardening cement (such as Wuxi Yaowei Building Materials Co., Ltd. double-fast cement), and the weight ratio of the two is 52.5 cement: quick-hardening cement=1: : 2; described steel fiber is that length is 30mm, and diameter is the steel fiber of 0.5mm; Add the steel fiber of this specification, make grouting material have stronger tensile resistance, compression resistance, wear resistance, crack resistance, anti- bending ability.

[0029] The above-mentioned premix is ​​65 parts of polycarboxylate superplasticizer, 20 parts of polyacrylamide, 10 parts of viscosity modifier, and 5 parts of ...

Embodiment 3

[0032] The distribution ratio of each component: A cement mixture 43 parts, B fine aggregate 53 parts, C steel fiber 3 parts, D premix 1 part.

[0033] The above-mentioned fine aggregate is a mixture of 60-mesh quartz sand and 300-mesh quartz sand, and the weight mixing ratio of the two is 1:2. The above-mentioned cement mixture is compounded by P.II 52.5Mpa cement and special quick-hardening cement (such as Wuxi Yaowei Building Materials Co., Ltd. double-fast cement), and the weight ratio of the two is 52.5 cement: quick-hardening cement=1: 1.5; said steel fiber is steel fiber with a length of 35mm and a diameter of 0.8mm; adding this specification of steel fiber makes the grouting material have strong tensile, compressive, wear-resistant, crack-resistant, and bending-resistant ability.

[0034] The above-mentioned premix is ​​68 parts of polycarboxylate superplasticizer, 20 parts of polyacrylamide, 10 parts of viscosity modifier, and 2 parts of internal curing agent, wherei...

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Abstract

The invention discloses a high-strength non-shrinkage grouting material with early strength and an autogenous curing function and a preparation method of the grouting material. The grouting material is prepared from components in parts by weight as follows: 40-45 parts of cement admixture, 50-55 parts of fine aggregate, 2-5 parts of steel fiber and 0.5-2 parts of a premix. The prepared grouting material has moderate flow property, can neither cause segregation and layering phenomena due to too sparse slurry nor poor flow property and filling difficulty due to too dense slurry, and the grouting material has the advantages of high strength and low probability of cracking.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a high-strength (28d strength above 95MPa) non-shrinkage grout with no shrinkage (28d vertical expansion rate between 6.4-7.0), early strength (1d compressive strength 30MPa), and self-curing function material. Background technique [0002] With the needs of construction development, the requirements for concrete technology and dosage are getting higher and higher. During the use of concrete, its shrinkage and cracking rate must be strictly controlled to prevent potential safety hazards. Objects or roads will still be cracked and damaged, and they need to be repaired at this time. The non-shrinkable grouting material is the material that was bred. It is mainly used for secondary grouting of equipment foundations, reinforcement of beams, slabs and columns, and road repair projects. The non-shrinkage grouting materials currently used in the market include CGM1-4 series high-stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/48
Inventor 吴剑东周玉军肖艳飞陈大伟周友斌周敬萍
Owner JIANGXI PINGXIANG CITY LIANYOU BUILDING MATERIAL
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