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Process method for chopped fiber reinforced aerated concrete

A technology of aerated concrete and chopped fibers, which is applied in the field of lightweight thermal insulation building materials, can solve the problems that the fibers are not suitable for the alkalinity, high temperature and high pressure requirements of aerated concrete, and poor fiber dispersion.

Inactive Publication Date: 2012-08-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the shortcomings of short fiber reinforced autoclaved aerated concrete in the prior art, the fiber dispersion is not good, and the fiber is not suitable for the alkalinity, high temperature and high pressure requirements of aerated concrete. The process method of fiber reinforced aerated concrete can obtain autoclaved aerated concrete with good dispersibility, alkali resistance, high temperature and high pressure resistance and increased strength

Method used

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  • Process method for chopped fiber reinforced aerated concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 8.08 grams of chopped basalt fibers with a diameter of 9 μm and a length of 3 mm. Coating polypropylene resin and kaolin on the surface of chopped basalt fiber in turn. The autoclaved aerated concrete slurry was prepared by weighing the same autoclaved aerated concrete raw material as in Comparative Example 1. Add uncured chopped basalt fibers into the slurry, then add 8 grams of dispersant (sodium lauryl sulfate), stir evenly and then pour into a mold. After 4 hours of pre-curing, autoclave curing to obtain autoclaved Aerated Concrete. The same physical and mechanical properties as in Comparative Example 1 were tested.

Embodiment 2

[0034] Weigh 8.08 grams of chopped basalt fibers with a diameter of 9 μm and a length of 6 mm. The raw material weight, preparation method and process are the same as in Example 1 to prepare autoclaved aerated concrete. The same physical and mechanical properties as in Comparative Example 1 were tested.

Embodiment 3

[0036] Weigh 8.08 grams of chopped basalt fibers with a diameter of 9 μm and a length of 12 mm. The raw material weight, preparation method and process are the same as in Example 1 to prepare autoclaved aerated concrete. The same physical and mechanical properties as in Comparative Example 1 were tested.

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Abstract

The invention discloses a process method for chopped fiber reinforced aerated concrete. A process for sequentially coating resin and inorganic compound particles on a fiber surface and adding coated chopped fibers and a dispersing agent into mixed slurry of autoclaved aerated concrete before the resin is cured is adopted, so that heat resistance and alkali resistance are improved, the bonding problem of the chopped fibers and a substrate and the dispersing problem of the chopped fibers are solved, and the reinforcing function of the chopped fibers can be brought into full play during high-temperature and high-pressure curing of the autoclaved aerated concrete. The aerated concrete reinforced by the method can keep the original light and heat preservation properties, and has the advantage of high intensity. By the reinforcing method, the formula of the original aerated concrete is not required to be changed; and the method is simple and practicable.

Description

technical field [0001] The invention relates to the technical field of lightweight thermal insulation building materials, in particular to a reinforced autoclaved aerated concrete. Background technique [0002] Autoclaved aerated concrete is made of calcareous materials such as lime, siliceous materials such as silica sand, and cement and other materials as the main raw materials, mixed with water at a certain water-to-material ratio, and then foamed with a foaming agent. Products obtained by steaming under high temperature and high pressure. Autoclaved aerated concrete has a series of excellent properties: light weight, low thermal conductivity, good thermal insulation performance, can reduce the thickness of the wall and the quality of the building itself, thereby reducing the foundation size of the building and improving Improve the utilization of land and save materials. At the same time, autoclaved aerated concrete can also improve the efficiency of building constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B26/00C04B16/06C04B14/38
CPCC04B28/00C04B20/12C04B2103/408
Inventor 李敏吴智深
Owner SOUTHEAST UNIV
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