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A kind of additive for foam cement

A technology of foamed cement and additives, applied in the field of foamed cement additives, can solve the problems of lower water absorption rate, slow demoulding, collapsed film, etc., and achieve the effects of promoting production efficiency, speeding up demoulding time, and reducing solidification time

Active Publication Date: 2018-08-07
ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although foamed cement has many of the above advantages, however, foamed cement is affected by its own materials or the environment. When using existing foamed cement, the demoulding is slow, and the water absorption rate of the quality is high, which is easy to cause the collapse of the film, thereby affecting the yield and Therefore, there is an urgent need for a foamed cement additive, which can promote the rapid demoulding of foamed cement and reduce its mass water absorption rate after being used in foamed cement

Method used

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  • A kind of additive for foam cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of Neem flower extract:

[0019] Weigh the neem flower and water according to the mass ratio of neem flower:water of 1:50 in g, put the neem flower and water into the autoclave to keep the temperature at 210°C, the pressure at 5MPa, and the stirring speed at 350r / min Supercritical extraction for 0.5h, after the temperature in the autoclave drops to 90°C or below, release the pressure and discharge the material, take out the material in the autoclave, keep the temperature at 47°C, heat and concentrate for 1h, and then put it in an oven for drying at 50°C After 30 minutes, it was ground into powder, ready for use. Heat 100g of kaolin to 600°C and keep it for 1 hour, and make metakaolin after cooling, which is ready for use.

[0020] Take g as the unit, weigh the required raw materials of each component: 0.8 g of ethyl acetate, 70 g of hydroxypropyl methylcellulose, 5 g of oleic acid, 5 g of silicone oil, 14 g of metakaolin prepared above, and rosin resin with...

Embodiment 2

[0022] Preparation of Neem flower extract:

[0023] Take the neem flower and water as the unit, weigh the neem flower and water according to the mass ratio of neem flower: water 1:30, put the neem flower and water into the autoclave to keep the temperature at 180°C, the pressure at 6MPa, and the stirring speed at 350r / min Supercritical extraction for 0.5h, after the temperature in the autoclave drops to 90°C or below, release the pressure and discharge the material, take out the material in the autoclave, keep the temperature at 40°C, heat and concentrate for 1h, and then put it in an oven for drying at 50°C After 30 minutes, it was ground into powder, ready for use. Heat 100g of kaolin to 500°C and keep it for 1 hour, and make metakaolin after cooling, which is ready for use.

[0024] Take g as the unit, weigh the required raw materials of each component: 0.2g of ethyl acetate, 20g of hydroxypropyl methylcellulose, 0.25g of oleic acid, 0.25g of silicone oil, 4g of metakaolin...

Embodiment 3

[0026] Preparation of Neem flower extract:

[0027] Take the neem flower and water as the unit, weigh the neem flower and water according to the mass ratio of neem flower:water 1:40, put the neem flower and water into the autoclave and keep the temperature at 240°C, the pressure at 4MPa, and the stirring speed at 350r / min Supercritical extraction for 1 hour, after the temperature in the autoclave drops to 90°C or below, release the pressure and discharge the material, take out the material in the autoclave, keep the temperature at 53°C, heat and concentrate for 1h, then put it in an oven for 30 minutes at 50°C , ground into powder, that is, ready for use. Heat 100g of kaolin to 700°C and keep it for 1 hour, and make metakaolin after cooling, which is ready for use.

[0028] Take g as the unit, weigh the required raw materials of each component: 0.5g of ethyl acetate, 45g of hydroxypropyl methylcellulose, 0.4g of oleic acid, 0.3g of silicone oil, 9g of metakaolin prepared abov...

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Abstract

The invention discloses an additive for foaming cement. The additive comprises the following components by weight: 0.2-0.8 part of ethyl acetate, 20-70 parts of hydroxypropyl methylcellulose, 0.25-5 parts of oil acid, 0.25-5 parts of silicone oil, 4-14 parts of metakaolin, 3-5 parts of rosin resin and 0.1-0.4 part of glyceryl monostearate (GMS). The additive for foaming cement accelerates the release time and clotting time of foaming cement, reduces the mass water absorption of the foam cement, greatly improves the product quality, and promotes production efficiency.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to an additive for foamed cement. Background technique [0002] Foamed cement is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and evenly mix the foam with the cement slurry, and then go through the pumping system of the foaming machine for cast-in-place construction or mold molding. A new type of lightweight thermal insulation material with a large number of closed pores formed by natural conservation. It belongs to the bubble-like thermal insulation material, and its outstanding feature is that it forms closed foam pores inside the concrete, which makes the concrete lightweight and thermally insulated. At present, this technology has begun to be popularized in western China, and foamed cement bricks are also made of foamed cement in southern China to achieve the effect of roof insulation and external wal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B38/02C04B28/04
CPCC04B28/04C04B40/0039C04B24/045C04B24/383C04B14/106C04B24/42C04B24/34C04B24/085C04B2103/0045C04B22/10C04B16/0633C04B18/08C04B24/24C04B22/068C04B38/02
Inventor 杨卓舒陈强余中华董晓楠邹阳陈展庆月
Owner ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD
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