Underfloor heating cushion gypsum based self-leveling mortar with heat insulation performance and preparation method

A technology of thermal insulation performance and self-leveling mortar, which is applied in the field of building floor materials, can solve the problems of low market acceptance and impact on concrete bases, and achieve sustainable development, moderate foaming effect, and uniform pores Effect

Inactive Publication Date: 2018-01-16
JIANGSU EFFUL SCIENCE AND TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The α-type high-strength gypsum powder prepared by desulfurization gypsum generally has good strength performance, but its color is yellow, and it is also yellow after being hydrated and hardened into mortar, and the market acceptance is

Method used

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  • Underfloor heating cushion gypsum based self-leveling mortar with heat insulation performance and preparation method
  • Underfloor heating cushion gypsum based self-leveling mortar with heat insulation performance and preparation method
  • Underfloor heating cushion gypsum based self-leveling mortar with heat insulation performance and preparation method

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preparation example Construction

[0028] A method for preparing a floor heating cushion gypsum-based self-leveling mortar with thermal insulation performance, the steps are as follows:

[0029] S1. Preparation of α-type high-strength gypsum powder: CaCl 2 Put the solution into chlor-alkali industrial wastewater for full reaction, filter the reacted solution to obtain solid CaSO 4 2H 2 O, CaSO 4 2H 2 O configured as a suspension will contain CaSO 4 2H 2 The O suspension is added with a crystal-transforming agent for hydrothermal reaction, and finally α-type high-strength gypsum powder is obtained by centrifugation, drying, and grinding.

[0030] S2. Preparation of self-leveling mortar: fully mix α high-strength gypsum powder, cement, fly ash, filler, aggregate, foaming agent, foam stabilizer, water retaining agent, water reducing agent, and setting retarder to form a powder, and then Add water to the powder and stir thoroughly, control the water-material ratio to 0.21-0.25, and finally obtain gypsum-based...

Embodiment 1

[0033] In terms of mass, the mix ratio is as follows: 43 parts of α high-strength gypsum powder prepared by chlor-alkali industry by-product chemical gypsum, 8 parts of ordinary silicon cement with P.O42.5, 3 parts of secondary fly ash, 8 parts of heavy calcium powder, quartz 40 parts of sand, 0.2 parts of tea saponin, 0.1 part of triethanolamine, 0.2 parts of low viscosity hydroxypropyl methylcellulose ether, 0.2 parts of carboxylic acid water reducer and polyester water reducer, 0.05 part of trisodium citrate, The ratio of water to material is 0.233.

Embodiment 2

[0035] In terms of mass, the mix ratio is as follows: 46 parts of α high-strength gypsum powder prepared by chemical gypsum, a by-product of the chlor-alkali industry, 6 parts of ordinary silicon cement with P.O42.5, 8 parts of heavy calcium powder, 40 parts of yellow sand, and 0.6 parts of tea saponin 0.15 parts, 0.15 parts of alkanolamide, 0.15 parts of low-viscosity hydroxypropyl methylcellulose ether, 0.2 parts of BASF F10 and polyether superplasticizer, 0.05 parts of SG-10, and the ratio of water to material is 0.235.

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Abstract

The invention discloses underfloor heating cushion gypsum based self-leveling mortar with heat insulation performance and a preparation method of the self-leveling mortar. The self-leveling mortar comprises the following components in parts by weight: 40 to 50 parts of alpha high-strength gypsum powder, 4 to 8 parts of cement, 0 to 6 parts of coal ash, 6 to 12 parts of a filler, 35 to 45 parts ofan aggregate, 0.2 to 1 part of a foaming agent, 0.1 to 0.2 part of a foam stabilizer, 0.1 to 0.2 part of a water-retaining agent, 0.1 to 0.3 part of a water reducer and 0.03 to 0.07 part of a retarder. The preparation method disclosed by the invention comprises the two steps of preparing the alpha high-strength gypsum powder and preparing the self-leveling mortar. The self-leveling mortar is highin heat insulation performance, can maintain relatively high flowing property and preferable strength performance, meanwhile is free of cracking or shrinkage in later period, and is relatively high involume stability.

Description

technical field [0001] The invention belongs to a building floor material, in particular to a gypsum-based self-leveling mortar for a floor heating cushion with thermal insulation performance. Background technique [0002] Japan began the basic research on gypsum-based self-leveling materials in 1972. By 1979, Japan had more than ten brands of gypsum-based self-leveling materials. In the 1980s, Britain, the United States, France and Russia began the research and development of gypsum-based self-leveling materials. In 2001, German dry-mixed mortar accounted for 16.4% of floor materials. [0003] There are three kinds of common self-leveling floor materials at home and abroad: 1. Cement-based self-leveling materials; 2. Epoxy resin-based self-leveling materials; 3. Gypsum-based self-leveling mortar. Among them, cement-based self-leveling materials and epoxy-based self-leveling materials have been widely used in China. However, due to the large shrinkage of cement-based self-...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B38/10
Inventor 陈勇唐永波孟醒刘丽娟杨志许文龙马红青徐辉郭泰民
Owner JIANGSU EFFUL SCIENCE AND TECHNOLOGY CO LTD
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