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Method for preparing fiber reinforced thermal insulation concrete wall

A heat-retaining concrete and fiber-reinforced technology, applied to clay preparation devices, chemical instruments and methods, manufacturing tools, etc., can solve problems such as micro-cracks and damage

Inactive Publication Date: 2018-10-12
芜湖恒固混凝土材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, ordinary concrete walls and aerated concrete walls are brittle materials, which are easy to produce micro-cracks due to shrinkage, or even completely destroyed, which cannot meet the requirements of building structures, and can only be used as non-load-bearing partition walls or insulation materials

Method used

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  • Method for preparing fiber reinforced thermal insulation concrete wall

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preparation example Construction

[0022] The present invention also provides a method for preparing the fiber-reinforced thermal insulation concrete wall, comprising the following steps:

[0023] (1) Spinning after mixing the first polymer emulsion and the second blowing agent uniformly to obtain polymer fibers; then placing the polymer fibers, chain extenders and metal oxide powders in the second polymer emulsion, React at 60-100°C for 15-60 minutes, then soak in acidic solution to obtain composite porous fibers;

[0024] (2) Mix fly ash, cement, fine sand, diatomaceous earth, light calcium carbonate, light aggregate, composite porous fiber and waste rubber under mechanical stirring conditions to obtain a powder mixture;

[0025] (3) After uniformly dispersing the water reducer and other additives in water, add them to the above powder mixture, and continue to stir for 60-150s to obtain a mixed slurry; finally, add the first foaming agent to the mixed slurry, and stir evenly to obtain Concrete precursor;

...

Embodiment 1

[0032] (1) Spin after mixing 24kg polyethylene terephthalate emulsion and 6kg 4,4-oxobisbenzenesulfonyl hydrazide evenly to obtain polyethylene terephthalate fibers, and the spinning process is: The power supply voltage is 30kV, the spinning temperature is 25°C, and the relative humidity is 60%; the needle spacing of the multi-needle spinneret unit is 25cm, and the number of spinneret unit needleheads is 60; 22kg polyethylene terephthalate fiber, 20kg ethylene glycol and Put 1.2kg of zinc nitrate in 12kg of polyethylene terephthalate emulsion, react at 80°C for 45 minutes to obtain polymer fibers, then soak the polymer fibers in a hydrochloric acid solution with a pH of 3 for 2 hours, and replace them every 15 minutes A hydrochloric acid solution to obtain a composite porous fiber;

[0033] Soak 4kg of waste rubber granules in an acidic solution with a pH of 6-6.5 for 4 hours to obtain acidified rubber, mix the acidified rubber and 10kg of maleic anhydride in water evenly, and...

Embodiment 2

[0038] (1) 20kg of nylon 6 emulsion and 2kg of 4,4-oxobisbenzenesulfonyl hydrazide are mixed evenly and then spun to obtain nylon 6 fiber. The spinning process is: power supply voltage 30kV, spinning temperature 25°C, relative The humidity is 60%; the distance between the needles of the multi-needle spinning unit is 25cm, and the number of needles in the spinning unit is 60; 18kg of nylon 6 fibers, 24kg of 1,3-butanediol and 2kg of zinc oxide are placed in 10kg of nylon 6 emulsion, at 80°C React at low temperature for 30 minutes to obtain polymer fibers, then soak the polymer fibers in a hydrochloric acid solution with a pH of 2 for 1.5 hours, wherein the hydrochloric acid solution is replaced every 15 minutes to obtain composite fibers B, and treat composite fibers B at 150°C for 30 minutes, composite porous fiber

[0039] Soak 3kg of waste rubber particles in an acidic solution with a pH of 6-6.5 for 3 hours to obtain acidified rubber, mix the acidified rubber and 9kg of mal...

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Abstract

The invention relates to the technical field of concrete and preparation thereof, and in particular relates to a method for preparing a fiber reinforced thermal insulation concrete wall, and the method comprises the following steps: (1) mixing a first polymer emulsion and a second foaming agent evenly for spinning to obtain polymer fiber; then putting the polymer fiber, a chain extender and metaloxide powder in a second polymer emulsion for reaction, and then immersing in an acidic solution to obtain composite porous fiber; (2) dispersing fly ash, cement, fine sand, diatomaceous earth, lightcalcium carbonate, a light aggregate, the composite porous fiber, waste rubber, a water reducing agent and other auxiliary agents uniformly in water, then adding a first foaming agent, and uniformly stirring to obtain a concrete precursor; moulding and curing the concrete precursor to obtain the oncrete wall. The concrete wall prepared by the method has the characteristics of light weight, high strength and good weather resistance.

Description

technical field [0001] The invention relates to the technical field of concrete wall and its preparation, in particular to a method for preparing a fiber-reinforced thermal insulation concrete wall. Background technique [0002] Building energy conservation is a very important aspect of realizing a low-carbon economy. Among them, external wall insulation is the key to building energy saving. The external wall insulation technologies that are being used or promoted in our country are: ①External application of foam plastic board; ②Use foam plastic board as the sandwich of the outer wall; ③Use special additives to make slurry of polystyrene particles or glass beads, glass fiber and cement for external application Exterior wall; ④ Cast-in-place foam concrete wall insulation technology, which is a promotion project of the Ministry of Housing and Urban-Rural Development of the People's Republic of China (Jiankeke Han [2010] No. There is a catalog of building energy-saving retrof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B1/50B28B1/52B28C5/38B28C5/40D01F1/10D01F6/46D01F6/90D01F6/92C04B111/40
CPCC04B28/00B28B1/50B28B1/525B28C5/388B28C5/402B28C5/404C04B2111/40C04B2201/20C04B2201/32C04B2201/50D01F1/10D01F6/46D01F6/90D01F6/92C04B18/08C04B14/06C04B14/08C04B14/28C04B18/22C04B2103/302C04B38/02C04B38/10C04B16/06
Inventor 承忠富
Owner 芜湖恒固混凝土材料有限公司
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