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High-strength cement-based non-shrinkage grouting material

A high-strength cement and non-shrinkage technology, applied in the field of cement-based materials, can solve the problems of great influence, accelerated decline in mechanical strength, and great influence on mechanical properties, etc., achieve strong interface force, improve mechanical strength, and avoid aging problems Effect

Active Publication Date: 2016-06-29
ZHENJIANG ATLANTIC MODULAR SYSTEM LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application CN103058616A discloses a modified cement mixture, which uses polypropylene fiber as a reinforcing material; but there are the following disadvantages: the fiber used is prepared from thermoplastic resin, which will continue to age as time increases, and the mechanical strength will decline faster ; The interface performance of organic-inorganic composite materials has a great influence on the overall performance of the material, especially the mechanical properties. Interface defects weaken the reinforcement function of organic fibers, and even some weak interfaces will become stress concentration points and crack first when they are stressed. : The prior art does not mention the diameter and length of organic fibers and other dimensions. These parameters have a great impact on practical applications. The size of the large size leads to uneven dispersion, and it is too small to easily agglomerate and cannot achieve theoretical reinforcement.

Method used

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  • High-strength cement-based non-shrinkage grouting material
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  • High-strength cement-based non-shrinkage grouting material

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0042] Synthetic example 1 surface treatment of hollow polymethyl methacrylate microspheres

[0043]Mix hollow polymethyl methacrylate microspheres, deionized water, and methacrylic acid at a mass ratio of 1:100:25. The mixed solution is stirred on a magnetic stirrer and heated at 45°C for 30 minutes, and then Ultrasonic vibration treatment was performed for 15 minutes. After the treatment, it was placed in a vacuum oven at a temperature of 150° C. and baked for 2.5 hours to obtain surface-treated hollow polymethylmethacrylate microspheres.

Synthetic example 2

[0044] Preparation of Synthetic Example 2 Cyanate Resin Epoxy Resin Copolymer Fiber

[0045] Add bisphenol A type cyanate resin monomer and bisphenol A type epoxy resin monomer into the container at a mass ratio of 1:25, prepolymerize at 95°C for 15 minutes to obtain a prepolymer; then prepolymerize The polymer is dissolved in acetone to form a spinning solution with a concentration of 20%; the fiber material is prepared by conventional electrospinning, and its diameter is 0.09-0.14 microns;

[0046] The process parameters of electrospinning are: voltage 1-50 kV, receiving distance 1-50 cm, solution flow rate 0.01-20 mL / h.

Embodiment

[0048] According to the weight ratio shown in Table 1, each component is added into the dry powder mixer at one time, and the cement-based non-shrinkage grouting material can be obtained after thorough and uniform mixing.

[0049] Table 1 Weight composition of cement-based non-shrinkage grouting material

[0050] serial number

[0051] Example 4

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Abstract

The invention discloses a high-strength cement-based non-shrinkage grouting material, which is prepared by dry mixing the following raw materials in the weight ratio: 100 parts of cement; 150-180 parts of river sand; 1-2 parts of water reducing agent; defoaming 0.1-0.3 parts of agent; 0.8-1.2 parts of retarder; 0.7-0.85 parts of reinforcing agent; 0.2-0.35 parts of hollow polymer microspheres. The microspheres used in the present invention can not only make the cement base material denser but also improve the strength of the material. The distribution ratio of each component is reasonable and the interface force is strong. The obtained grouting material has excellent fluidity and strength performance and can be used for large-scale equipment installation , Bolt anchoring and structural reinforcement.

Description

technical field [0001] The invention belongs to the technical field of cement-based materials, and in particular relates to a high-strength cement-based non-shrinkage grouting material. Background technique [0002] Cement-based non-shrinkage grouting material has the characteristics of good self-flow, rapid hardening, high strength, micro-expansion, non-toxic and harmless, no aging, no pollution, anti-rust, convenient construction, etc. It is widely used for anchoring anchor bolts, fixing nuclear power equipment, Secondary grouting of equipment foundation, reinforcement and transformation of embedded reinforced concrete structures, crack treatment of old concrete structures, etc. It has been mainly used for equipment foundation grouting at the beginning, and has developed into a series of products that can be used for various purposes such as building foundation reinforcement, building reinforcement, building beams, slabs, and columns. [0003] In order to obtain ideal rei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 李海蓉
Owner ZHENJIANG ATLANTIC MODULAR SYSTEM LIMITED
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