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Fiber self-dense concrete composition, sound barrier and manufacture method thereof

A self-compacting concrete and composition technology, applied in the field of sound absorption and sound insulation products, can solve the problems of poor sound absorption and sound insulation effects, and achieve superior physical mechanics, beautiful decoration, and good sound absorption effects

Inactive Publication Date: 2007-02-28
杨志强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of technology and raw materials, its sound absorption and sound insulation effects are not good.

Method used

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  • Fiber self-dense concrete composition, sound barrier and manufacture method thereof
  • Fiber self-dense concrete composition, sound barrier and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A fiber self-compacting concrete composition for sound-absorbing and insulating barriers, prepared from the following raw materials (kg): cement 1, sand 1.2, water 0.35, polycarboxylate superplasticizer 0.0061, glass fiber 0.01, polypropylene Fiber 0.001.

[0027] Preparation method: The order of raw material feeding is to put sand first and then cement, then turn on the mixer for dry mixing, add glass fiber and polypropylene fiber fiber during the dry mixing process, add water reducer and water after the materials are evenly dispersed, add water and water reducer Stir again to ensure that the mixture is uniform; then pour, solidify and demould; vibrate for 5-8 seconds during the pour to make the concrete surface dense and get rid of larger air bubbles in the concrete; to avoid mixing Control the water content of the sand to 1.4%-1.6% of the sand mass. In order to avoid the phenomenon of insufficient fluidity or bleeding of fiber self-compacting concrete, the amount of ...

Embodiment 2

[0029] A fiber self-compacting concrete composition for sound-absorbing barriers, prepared from the following raw materials (kg): cement 1, sand 1, water 0.3, polycarboxylate superplasticizer 0.0056, glass fiber 0.005, polypropylene Fiber 0.0005.

[0030] Preparation method: The order of raw material feeding is to put sand first and then cement, then turn on the mixer for dry mixing, add glass fiber and polypropylene fiber fiber during the dry mixing process, add water reducer and water after the materials are evenly dispersed, add water and water reducer Stir again to ensure that the mixture is uniform; then cast the mold, solidify and demould.

Embodiment 3

[0032] A fiber self-compacting concrete composition for sound-absorbing barriers, prepared from the following raw materials (kg): cement 1, sand 1.5, water 0.4, polycarboxylate superplasticizer 0.0066, glass fiber 0.015, polypropylene Fiber 0.0015.

[0033] Preparation method: with embodiment 1.

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Abstract

The invention discloses a fiber self-compact concrete composition, composite sound covolume adsorbing and separating barrier and preparing method with front end of inner cavity of sound barrier as sound adsorbing material cavity and back part as air pad cavity, which comprises the following parts: cement, sand, water, polycarboxylic dehydragent, glass fiber and polypropylene fibre with rate at 1: (1-1.5) : (0.3-0.4) : (0.0056-0.0066) : (0.005-0.015) : (0.0005-0.0015).

Description

technical field [0001] The invention relates to a sound-absorbing and sound-insulating product of building materials, in particular to a fiber self-compacting (self-leveling) concrete composition, its composite sound-absorbing and insulating body sound barrier and a preparation method thereof. Background technique [0002] At present, there is a glass fiber reinforced cement (GRC for short) on the market, which is generally used in building materials. It is made of alkali-resistant glass fiber, cement, and sand. After more than 30 years of improvement, this product has high strength and durability. Strong, lightweight and other advantages, it has been widely used in the field of construction and as noise barriers on expressways and viaducts. However, due to the limitations of technology and raw materials, its sound absorption and sound insulation effects are not good. Contents of the invention [0003] The technical problem to be solved by the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/06C04B14/42C04B16/06C04B24/24
CPCC04B2111/00103
Inventor 杨志强
Owner 杨志强
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