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Cement plate

A cement and board technology, applied in the field of cement board, can solve the problems of high energy consumption, low strength and high cost, and achieve the effects of improving early strength and late strength, improving particle dispersion and enhancing product strength

Inactive Publication Date: 2016-09-07
钟苗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problems of these panels are low strength and poor durability, which greatly limits their application in basements, underground passages and tunnels
In order to make up for this shortcoming, most of the methods of processing the above-mentioned plates are now used, the process is complicated, the cost is high, and the energy consumption is high.
Invisibly increased the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A cement board, cement board raw materials: 10kg of cement, 10kg of composite admixture, 20kg of sand, 10kg of water, 0.2kg of polyester fiber, 0.2kg of high-efficiency water reducing agent; Poured into the mold, demolded after curing, surface maintenance, to obtain cement board,

[0021] The preparation method of the high-efficiency alkaline water agent: (1) Add 200 parts of allyl polyoxyethylene ether and 150 parts of water in parts by mass to the container, maintain the temperature at 20°C, stir for 10 minutes, and then raise the temperature to 30°C ℃, add 3 parts of sodium persulfate, stir for 5 minutes, the temperature rises to 40 ℃, add 40 parts of itaconic acid and 20 parts of fumaric acid and stir, the temperature drops to 35 ℃, add 15 parts of hydroxypropyl acrylate and After 15 parts of polyethylene glycol maleate were stirred, the temperature dropped to 20°C, and 50 parts of allyltrimethylammonium chloride were added to obtain material A. (2) Add 2 parts of b...

Embodiment 2

[0024] A cement board, cement board raw materials: 20kg of cement, 15 kg of composite admixture, 25 kg of sand, 13 kg of water, 0.2 kg of polyester fiber, and 0.2 kg of high-efficiency water reducer; first put the above raw materials into a mixer to stir evenly, and mix the cement The mixture is poured into the mold, demolded after curing, and the surface is maintained to obtain a cement plate.

[0025] The preparation method of the high-efficiency alkaline water agent: (1) Add 300 parts of allyl polyoxyethylene ether and 160 parts of water in parts by mass to the container, maintain the temperature at 20°C, stir for 10 minutes, and then raise the temperature to 30°C ℃, add 4 parts of sodium persulfate, stir for 5 minutes, the temperature rises to 40 ℃, add 50 parts of itaconic acid and 30 parts of fumaric acid and stir, the temperature drops to 35 ℃, add 20 parts of hydroxypropyl acrylate and After 20 parts of polyethylene glycol maleate were stirred, the temperature dropped ...

Embodiment 3

[0028] A cement board, cement board raw materials: cement 15kg, composite admixture 13 kg, sand 23kg, water 12kg, polyester fiber 0.2kg, high-efficiency water reducer 0.2kg; first put the above raw materials into the mixer to stir evenly, and cement The mixture is poured into the mold, demolded after curing, and the surface is maintained to obtain a cement plate.

[0029]The preparation method of the high-efficiency alkaline water agent: (1) Add 250 parts of allyl polyoxyethylene ether and 155 parts of water in parts by mass to the container, maintain the temperature at 20°C, stir for 10 minutes, and then raise the temperature to 30°C ℃, add 3.5 parts of sodium persulfate, stir for 5 minutes, the temperature rises to 40 ℃, add 45 parts of itaconic acid and 25 parts of fumaric acid and stir, the temperature drops to 35 ℃, add 17 parts of hydroxypropyl acrylate and After 17 parts of polyethylene glycol maleate were stirred, the temperature dropped to 20°C, and 55 parts of allylt...

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PUM

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Abstract

The invention discloses a cement plate. A preparation method of the cement plate comprises putting raw materials into a stirrer, carrying out uniform stirring, pouring the cement mixture into a mold, carrying out curing, then carrying out demolding and carrying out surface maintenance to obtain the cement plate. Allyl polyethenoxy ether, itaconic acid, fumaric acid, hydroxypropyl acrylate and polyethylene glycol maleate undergo a macromonomer substitution reaction to produce a high efficiency water reducer. The water reducer effectively improves cement plate particle dispersity, fluidity and workability. Through combination of the composite admixture and the high efficiency water reducer, cement plate early strength and later strength are improved and cement plate quality is guaranteed.

Description

technical field [0001] The invention relates to a cement plate and belongs to the technical field of building materials. Background technique [0002] At present, the inorganic material boards on the market mainly include asbestos cement boards, GRC boards, fiber-reinforced silicon calcium boards, glass magnesium boards (glass fiber reinforced magnesium oxychloride cement boards), etc. The common problems of these panels are low strength and poor durability, which greatly limits their application in basements, underground passages and tunnels. In order to make up for this shortcoming, the method of processing the above-mentioned boards is mostly adopted now, which has complicated process, high cost and high energy consumption. Invisibly increased costs. Contents of the invention [0003] A cement board, cement board raw materials: cement 10-20kg, composite admixture 10-15 kg, sand 20-25kg, water 10-13kg, polyester fiber 0.2kg, high-efficiency water reducer 0.2kg; first t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B20/04C08F283/06C04B24/32C04B103/30
CPCC04B28/00C04B20/04C04B24/32C04B40/0046C04B2103/302C04B2201/50C08F283/065C04B14/02C04B14/06C04B16/0683C04B20/026C04B18/125C04B14/365C04B14/28C04B14/36C04B18/144
Inventor 钟苗
Owner 钟苗
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