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Application of hollow porous fiber in plastering cement substrate material

A technology of porous fiber and gray cement, which is applied in the field of application of the fiber in plastered cement-based materials, can solve the problems of easy cracking, damage superiority, and insufficient impermeability, etc., and achieve improved resistance to fire bursting and significant crack resistance And the effect of thermal insulation and energy saving effect

Inactive Publication Date: 2007-07-18
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the new lightweight wall materials widely promoted in our country, such as aerated concrete, lightweight bricks, hollow blocks, etc., almost have serious defects of easy cracking and insufficient impermeability, which seriously damage their superiority and affect the promotion and application of materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the comparative experiment of improving the anti-crack performance of concrete

[0026] In order to verify the anti-crack and anti-seepage effect of porous fiber concrete, comparative tests were carried out on ordinary concrete and porous fiber concrete, the situation is as follows:

[0027] Specimen 1: Ordinary concrete specimen

[0028] 1) Concrete grade C25.

[0029] 2) The concrete mix ratio refers to the "Ordinary Concrete Mix Ratio Design Regulations, JGJ55-2000", without other admixtures.

[0030] 3) Mixing system: dry mix fine aggregate + cement + fiber + coarse aggregate for 1 minute, add water and then wet mix for 2 minutes.

[0031] Specimen 2: Porous fiber concrete specimen

[0032] 1) The mixing ratio and mixing process of concrete are the same as above.

[0033] 2) Add polypropylene porous fibers with a dosage of 2kg / m3 into the concrete.

[0034] 3) Stirring system: appropriately prolong the stirring time to make the fibers disperse eve...

Embodiment 2

[0042] Embodiment 2: Improving the fireproof and anti-explosion performance of concrete

[0043] In order to verify the fire and explosion protection effect of porous fiber concrete, comparative tests were carried out on ordinary concrete and porous fiber concrete, the situation is as follows:

[0044] Specimen 1: Ordinary concrete specimen

[0045] 1) Concrete grade C25.

[0046] 2) The concrete mix ratio refers to the "Ordinary Concrete Mix Ratio Design Regulations, JGJ55-2000", without other admixtures.

[0047] 3) The test was carried out after a curing period of 28 days.

[0048] 4) Mixing system: dry mix fine aggregate + cement + fiber + coarse aggregate for 1 minute, add water and then wet mix for 2 minutes.

[0049] Specimen 2: Porous fiber concrete specimen

[0050] 1) The mix ratio of concrete is the same as above;

[0051] 2) Add 2kg / m to the concrete 3 porous polypropylene fibers.

[0052] 3) Stirring system: the mixing method is the same as above, and the s...

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Abstract

The invention relates to a porous hollow fibers application in plastering cement-based materials. the porous hollow fiber is polypropylene strengthen fiber, it's section has hollow and 3 to 9 holes structure, hollow is greater than 20%, hollow shaping rate of fiber greater than 98%, fiber diameter 20 mum m ~ 50 mum m, intensity is more than 500N / sq mm, elastic modulus is more than 3500N / mm2, elongation of 15 ~ 30%, 6 ~ 25mm length, the number of fiber 76 ~ 200 million / kg, density more than 0.70g / cu cm, used for the wall plastering , the day-leveling floor, parking lot microlith concrete wearing carpet, foam concrete and other plastering cement-based materials, can improve plastering cement-based materials crack resistance, thermal insulation properties, but also enhance its anti-fire burst performance.

Description

【Technical field】 [0001] The invention relates to the application of a hollow porous fiber, in particular to the application of the fiber in plastering cement-based materials. 【Background technique】 [0002] At present, the new lightweight wall materials widely promoted in our country, such as aerated concrete, lightweight bricks, hollow blocks, etc., almost have serious defects of easy cracking and insufficient impermeability, which seriously damage their superiority and affect the Promotion and application of materials. Adding synthetic fibers to cement-based materials in a certain proportion can prevent them from cracking, thus making up for the deficiencies of these materials to a certain extent. Currently, the anti-crack and anti-seepage fibers used in cement mortar plastering mainly include solid synthetic fibers, asbestos fibers, and glass fibers. 【Content of invention】 [0003] The purpose of the present invention is to apply the hollow porous fiber to the plaste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/38C04B28/00
CPCC04B20/0056C04B2111/343
Inventor 刘凤茹何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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