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Self-leveling mortar of composite cement

A self-leveling mortar and composite cement technology, applied in the field of building materials, can solve problems such as poor shrinkage performance and construction cracking, and achieve the effect of long service life and wide application.

Inactive Publication Date: 2013-06-26
上海宝元化学建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing self-leveling mortar at home and abroad has the problem of poor post-shrinkage performance causing cracking of large blocks when the strength meets the requirements (generally should be greater than 20Mpa), and in view of this problem provides A composite cement self-leveling mortar

Method used

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  • Self-leveling mortar of composite cement

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Experimental program
Comparison scheme
Effect test

Embodiment

[0038] A kind of composite cement self-leveling mortar, 100 parts of cement self-leveling mortar includes:

[0039] Portland cement 23 parts;

[0040] 8 parts of sulphoaluminate cement;

[0041] 4.44 parts of 400-700 mesh limestone powder;

[0042] Silica fume (D50≥0.225u) 1 part;

[0043] 5 parts of 200 mesh anhydrite;

[0044] 2 parts of 200 mesh slaked lime;

[0045] Fine sand (50-150 mesh quartz sand without organic matter) 50 parts;

[0046] 0.6 parts of polysulfate-based water reducer;

[0047]1.0 parts of polyethylene glycol shrinkage reducing agent;

[0048] 0.2 parts of industrial grade tartaric acid;

[0049] 0.1 part of industrial grade lithium carbonate;

[0050] 0.5 parts of mineral oil powdery defoamer;

[0051] 1.5 parts of mobile latex powder;

[0052] Alkali-resistant iron oxide pigments Iron orange 2.5 parts;

[0053] 300~600mpa·s 0.06 parts of hydroxypropyl methylcellulose.

[0054] In this embodiment, the water reducer is polycarboxylate water r...

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Abstract

The invention belongs to the technical field of building materials, and relates to self-leveling mortar of composite cement, which aims to solve the problem of large-scale construction cracking caused by poor later-stage shrinkage performance under the condition that the strength of the existing self-leveling mortar at home and abroad meets the requirement (is usually more than 20MPa). The main gelled material in the self-leveling mortar of the composite cement provided by the invention is ordinary Portland cement. The technical scheme of the invention can effectively solve the technical problem.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a composite cement self-leveling mortar. Background technique [0002] Cement self-leveling mortar belongs to cement mortar with special functions. From a technical point of view, it may be the most complicated field of dry-mixed mortar. From the difference of self-leveling load-bearing requirements, it can be divided into bottom self-leveling and surface self-leveling, and the performance requirements of surface self-leveling are higher. [0003] Foreign self-leveling materials are divided into two categories: gypsum-based self-leveling materials and cement-based self-leveling materials based on high-alumina cement. The main countries of production are Japan, the United States, Germany, Finland, etc. Among them, Japan is the earliest One of the countries that develop self-leveling products. [0004] my country's start to ground cement self-leveling materials was relati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B28/36C04B28/04
Inventor 袁军孙新华
Owner 上海宝元化学建材有限公司
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