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Gypsum self-leveling mortar with temperature adjusting function and preparation method thereof

A technology of self-leveling mortar and gypsum, which is applied in the field of building materials, can solve the problems of poor fluidity, long working time, no temperature adjustment function, etc., and achieve the effect of high early strength

Inactive Publication Date: 2020-08-28
CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the filling material of the ground radiant heating heating layer is generally pea-stone concrete, which has poor fluidity and does not have the function of temperature adjustment. After construction, it can take a long time to be used, and it needs to be leveled again before the laying of ground facing materials

Method used

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  • Gypsum self-leveling mortar with temperature adjusting function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 400g of high-strength gypsum prepared from natural gypsum, 70g of cement, 400g of sand, 110g of heavy calcium, and 20g of rubber powder (formed by spray drying of vinyl acetate-ethylene copolymer emulsion) as main ingredients; weigh 0.8g of water reducer, 0.8g of water retaining agent, 0.08g of retarder, and 0.4g of defoamer are used as admixtures; 100g of phase change material is weighed. Mix and stir the main ingredients, additives and phase change materials evenly to prepare gypsum-based self-leveling mortar.

Embodiment 2

[0035] Weigh 300g of high-strength gypsum prepared from desulfurized gypsum, 150g of construction gypsum, 80g of cement, 350g of sand, 100g of heavy calcium, and 20g of rubber powder (formed by spray-drying of vinyl acetate-ethylene copolymer emulsion) as main ingredients; 0.8g of water-retaining agent, 0.6g of water-retaining agent, 0.09g of retarder, and 0.5g of defoamer are used as admixtures; 300g of phase change material is weighed. Mix and stir the main ingredients, additives and phase change materials evenly to prepare gypsum-based self-leveling mortar.

Embodiment 3

[0037] Weigh 450g of high-strength gypsum prepared from desulfurized gypsum, 75g of cement, 350g of sand, 110g of heavy calcium, and 15g of rubber powder (spray-dried from acrylic acid emulsion) as main ingredients; weigh 0.8g of water reducing agent and 0.7g of water retaining agent , retarder 0.1g, defoamer 0.6g as additives; weigh 300g of phase change material. Mix and stir the main ingredients, additives and phase change materials evenly to prepare gypsum-based self-leveling mortar.

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Abstract

The invention discloses gypsum self-leveling mortar with a temperature adjusting function and a preparation method thereof. The gypsum self-leveling mortar comprises a main material, an additive and aphase change material, the main material comprises gypsum, sand, cement, coarse whiting and rubber powder, and the additive comprises a water reducing agent, a water retaining agent, a retarder and adefoaming agent. The preparation method comprises the step of uniformly mixing the main material, the additive and the phase change material to obtain the gypsum self-leveling mortar with the temperature adjusting function. The gypsum self-leveling mortar has a temperature adjusting function and is good in flowing leveling property and short in man-climbing time, does not need secondary leveling,and can replace pea gravel concrete to be used for filling a ground radiant heating layer or used as a leveling layer.

Description

technical field [0001] The application relates to the technical field of building materials, in particular to a gypsum self-leveling mortar with a temperature regulating function and a preparation method thereof. Background technique [0002] With the development of my country's economy and the improvement of people's living standards, people have higher and higher requirements for the comfort of the indoor environment, and temperature is one of the important indicators to measure the indoor comfort. [0003] Ground radiation heating is a new type of heating method, which has been widely promoted and applied in our country. At present, the filling material of the ground radiant heating heating layer is generally pea stone concrete, which has poor fluidity and does not have the function of temperature adjustment. Contents of the invention [0004] This application provides a gypsum self-leveling mortar with temperature regulating function and its preparation method. The mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/62
CPCC04B28/14C04B2111/62C04B7/02C04B14/068C04B14/28C04B24/2623C04B2103/302C04B24/383C04B24/14C04B24/08C04B14/047C04B24/36C04B24/2641
Inventor 张晓菲陈红霞刘文君杨潇
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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