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Cement-based self-leveling mortar

A self-leveling mortar and cement-based technology, which is applied in the field of cement-based self-leveling mortar, can solve the problems of poor water resistance and wear resistance, and limited use range, so as to increase fluidity, reduce hydration temperature rise, and improve compressive strength. Effect

Inactive Publication Date: 2013-10-09
江苏蓝圈新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Self-leveling mortar includes gypsum-based and cement-based self-leveling mortar. Due to the poor water resistance and abrasion resistance of gypsum-based self-leveling mortar, the scope of use is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Cement-based self-leveling mortar: 200 parts of ordinary Portland cement (both PO4205 and PO52.5 are acceptable), 50 parts of high-alumina cement (42.5 and 52.5 are both acceptable), 350 parts of quartz sand, 100 parts of heavy calcium carbonate, anhydrite 30 parts, 0.5 parts of defoamer (polymethylcyclotetrasiloxane), 3 parts of water reducer (naphthalene-based water reducer, lignosulfonate water reducer, polycarboxylate water reducer can be used), Redispersible latex powder (ethylene-vinyl acetate copolymer latex powder) 10 parts, tartaric acid 0.5 part, lithium carbonate 0.3 part, methyl cellulose 0.3 part, hexylene glycol 3 parts.

Embodiment 2

[0013] Cement-based self-leveling mortar: 450 parts of Portland cement, 100 parts of high alumina cement, 500 parts of quartz sand, 250 parts of heavy calcium carbonate, 100 parts of anhydrite, 2 parts of defoamer, 10 parts of water reducer, 50 parts of dispersed latex powder, 3 parts of tartaric acid, 2 parts of lithium carbonate, 2 parts of methyl cellulose, and 10 parts of hexylene glycol.

Embodiment 3

[0015] Cement-based self-leveling mortar: 300 parts of Portland cement, 70 parts of high alumina cement, 400 parts of quartz sand, 150 parts of heavy calcium carbonate, 60 parts of anhydrite, 1 part of defoamer, 6 parts of water reducer, 30 parts of dispersed latex powder, 1.5 parts of tartaric acid, 1 part of lithium carbonate, 1 part of methyl cellulose, and 6 parts of hexanediol.

[0016] After the raw materials are mixed, they are stirred with 20%-22% water, and the obtained mortar is pumped, and it has self-leveling properties after pouring on the foundation.

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PUM

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Abstract

The invention discloses a cement-based self-leveling mortar, comprising the following constituents by weight ratio: 200-450 parts of silicate cement, 50-100 parts of high-alumina cement, 350-500 parts of quartz sand, 100-250 parts of ground limestone, 30-100 parts of anhydrite, 0.5-2 parts of antifoaming agent, 3-10 parts of water reducing agent, 10-50 parts of redispersible emulsion powder, 0.5-3 parts of tartaric acid, 0.3-2 parts of lithium carbonate, 0.3-2 parts of methylcellulose and 3-10 parts of ethylene glycol. For the cement-based self-leveling mortar prepared by the invention, the 20min fluidity is more than 130mm, the 24h compressive strength is more than 6.0MPa and the breaking strength is more than 2.0MPa, the indexes all meet the national industry standard.

Description

technical field [0001] The invention relates to a cement-based self-leveling mortar. Background technique [0002] Self-leveling mortar is a dry-mixed powdery material composed of a variety of active ingredients. It can be used after mixing with water on site. After a little spreading with a scraper, a high-level base surface can be obtained. The hardening speed is fast, and it can be walked on in 24 hours. Or carry out follow-up projects (such as laying wooden floors, diamond boards, etc.), the construction is quick and easy, which is incomparable to traditional manual leveling. [0003] Self-leveling mortar includes gypsum-based and cement-based self-leveling mortar. Due to the poor water resistance and abrasion resistance of gypsum-based self-leveling mortar, the scope of use is limited. The key to cement-based self-leveling mortar is to improve the rheological properties of the material under the condition of low water-cement ratio; under the premise of high fluidit...

Claims

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Application Information

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IPC IPC(8): C04B28/14
Inventor 王兴文王丽娟徐荣平
Owner 江苏蓝圈新材料股份有限公司
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