Fiber for cement concrete

A technology of cement concrete and fiber, applied in the field of fiber for cement concrete, can solve problems such as unsatisfactory comprehensive performance, and achieve the effect of convenient use and simple pulping process

Inactive Publication Date: 2009-11-18
赵文平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although the above grouting materials have certain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Dry mix 200kg of sand, 0.26kg of polypropylene fiber with a length of 19mm, 200kg of PO 42.5 cement and 20kg of off-white powder UEA-H high-efficiency concrete expansion agent for 3 minutes; then add 90kg of water to start stirring, and then add liquid naphthalene 5kg of high-efficiency water reducer FDN was stirred together for 5 minutes to obtain the polypropylene fiber cement mortar of the present invention.

Embodiment 2

[0037] Dry mix 150kg of sand, 0.26kg of polypropylene fiber with a length of 15mm, 200kg of PO 42.5 cement and 20kg of off-white powder UEA-H high-efficiency concrete expansion agent for 2 minutes; then add 84kg of water to start stirring, and then add liquid naphthalene 5kg of high-efficiency water reducer FDN was stirred together for 4 minutes to obtain the polypropylene fiber cement mortar of the present invention.

Embodiment 3

[0039] Dry mix 100kg of sand, 0.26kg of polypropylene fiber with a length of 12mm, 200kg of PO 42.5 cement and 20kg of off-white powder UEA-H high-efficiency concrete expansion agent for 1 minute; then add 74kg of water to start stirring, and then add liquid naphthalene 5 kg of high-efficiency water reducer FDN were stirred together for 3 minutes to obtain the polypropylene fiber cement mortar of the present invention.

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PUM

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Abstract

The invention discloses a fiber for cement concrete, which comprises the following constituents that the water cement ratio is 0.35-0.45; the glue sand ratio is 1:0.5-1:1.2; the content of high-efficiency expansive agent is 8-10 percent of the dosage of cement; the content of the high-efficiency water reducing agent is 0.5-1 percent of the dosage of the cement; and the content of polypropylene fibers is 1 m, and 0.8-1.2kg of the polypropylene fibers are doped in sand pulp. The invention also discloses a production method of the fiber. The fiber is a high-strength prestressed anchor grouting material having high rupture strength, compressive strength and tensile strength, small brittleness, good cracking resistance and impermeability and high bonding shearing strength and bondability strength.

Description

technical field [0001] A fiber for cement concrete, specifically relates to a polypropylene fiber cement mortar, and also relates to a production method of the polypropylene fiber cement mortar. Background technique [0002] At present, there are mainly the following types of prestressed anchor grouting materials: [0003] (1) The ultra-fine cement developed during the "Seventh Five-Year Plan" period has an average particle size of 4 μm and a specific surface area of ​​800 cm 2 / g or more, it can be used to inject rock fractures with a width of 0.06mm. [0004] (2) Developed wet-ground cement; it can be ground at any time, compared with ordinary cement, it has good water-separation stability, higher impermeability and mechanical strength, and greatly improved groutability. [0005] (3) Developed a modified grouting cement material: its characteristic is to optimize the gradation composition of cement particles, not simply to pursue the fineness of particles. [0006] (4) ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B16/06
Inventor 赵文平
Owner 赵文平
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