Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite gypsum-based self-leveling mortar and preparation method

A self-leveling mortar, gypsum-based technology, used in the field of floor materials, can solve the problems of low mechanical strength, water resistance, poor wear resistance, etc., and achieve the effects of high mechanical strength, good fluidity, no segregation and bleeding

Inactive Publication Date: 2017-02-22
NANJING UNIV OF TECH
View PDF6 Cites 41 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inorganic self-leveling materials can be mainly divided into cement-based and gypsum-based self-leveling materials. Cement-based self-leveling materials have the characteristics of high strength, wear resistance and water resistance, but they will shrink and crack during use. Gypsum products have Slight expansion, so gypsum-based self-leveling materials can solve the pain point of shrinkage and cracking of cement-based self-leveling materials, but ordinary gypsum-based self-leveling materials have low mechanical strength, poor water resistance and wear resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite gypsum-based self-leveling mortar and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] In terms of mass, the mix ratio is as follows: 52 parts of α-hemihydrate gypsum, 8 parts of PⅡ52.5 cement, 9.4 parts of 40-60 mesh quartz sand, 20.6 parts of 60-120 mesh quartz sand, 10 parts of 400 mesh heavy calcium powder (carbonic acid Calcium content greater than 85%, whiteness greater than 92), SG-10 gypsum retarder 0.1 part, "Wake" 1.6 parts of 5044N redispersible latex powder, 0.45 parts of HY polycarboxylate powder water reducer, 0.02 parts of hydroxypropyl methylcellulose ether water retaining agent (viscosity of 80000mpa.s), 0.16 parts of P823 defoamer, water quality The ratio is 0.20.

Embodiment 2

[0015] In terms of mass, the mix ratio is as follows: 52 parts of α-hemihydrate gypsum, 10 parts of PⅡ52.5 cement, 8.7 parts of 40-60 mesh quartz sand, 19.3 parts of 60-120 mesh quartz sand, 10 parts of 200 mesh heavy calcium powder (carbonic acid Calcium content greater than 85%, whiteness greater than 92), trisodium citrate retarder 0.06 parts, "Wack" 0.5 part of 5010N redispersible latex powder, 0.32 part of PC-1016 polycarboxylate powder water reducer, 0.03 part of hydroxypropyl methylcellulose ether water retaining agent (viscosity of 40000mpa.s), 0.32 part of P803 defoamer, The mass ratio of water to material is 0.19.

Embodiment 3

[0017] In terms of mass, the mix ratio is as follows: 49 parts of α-hemihydrate gypsum, 6 parts of aluminate cement, 10 parts of 40-60 mesh quartz sand, 20 parts of 60-120 mesh quartz sand, 15 parts of 500 mesh heavy calcium powder (carbonic acid Calcium content greater than 85%, whiteness greater than 92), SG-10 gypsum retarder 0.11 parts, "Wake" 0.8 part of 5010N redispersible latex powder, 0.45 part of PC-1016 polycarboxylate powder water reducer, 0.03 part of hydroxypropyl methylcellulose ether water retaining agent (viscosity of 60000mpa.s), 0.2 part of P823 defoamer, The mass ratio of water to material is 0.22.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention relates to composite gypsum-based self-leveling mortar and a preparation method. The composite gypsum-based self-leveling mortar is characterized by being prepared from, by mass, 49-54 parts of semi-hydrated gypsum, 6-10 parts of cement, 28-30 parts of aggregates, 10-15 parts of filler, 0.5-1.6 parts of redispersible latex powder, 0.32-0.45 part of a water reducing agent, 0.02-0.03 part of a water-retaining agent, 0.06-0.11 part of a retarder and 0.16-0.32 part of a defoaming agent, wherein the mass ratio of water to the materials ranges from 0.19 to 0.22. The preparation method comprises the steps that alpha-semi-hydrated gypsum and cement are taken as cementing materials, the filler, quartz sand and the additives are added, the raw materials are mixed to be uniform and then added into the water, stirring is conducted at low speed, and then the uniform mortar is obtained. By adding a small amount of cement into a common gypsum-based self-leveling material, the defects that the gypsum is low in strength and poor in water resistance and wear resistance are properly overcome, and shrinking and cracking cannot be generated in the subsequent using process; in addition, due to the fact that no poisonous or harmful substance is contained, the composite gypsum-based self-leveling mortar is a green and environment-friendly building material.

Description

technical field [0001] The invention belongs to floor materials, in particular to a composite gypsum-based self-leveling mortar and a preparation method thereof. Background technique [0002] The annual discharge of industrial by-product gypsum in my country is more than 100 million tons. Most of the industrial by-product gypsum is stacked outside all the year round, occupying a large amount of land and polluting the surrounding environment. The industrial by-product gypsum is used to prepare α - Hemihydrate gypsum is not only conducive to environmental protection, but also saves energy and resources, and is in line with the national sustainable development strategy. [0003] Inorganic self-leveling materials can be mainly divided into cement-based and gypsum-based self-leveling materials. Cement-based self-leveling materials have the characteristics of high strength, wear resistance and water resistance, but they will shrink and crack during use. Gypsum products have Micro ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06
CPCC04B28/04C04B28/06C04B2201/50C04B22/143C04B14/06C04B14/28C04B24/26C04B2103/302C04B24/383C04B2103/50C04B24/04
Inventor 李东旭琚诚兰戴浩张树鹏
Owner NANJING UNIV OF TECH
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com