Cement-based self-leveling dry powder mortar for high-cracking-resistance ground

A dry powder mortar and cement-based technology, which is applied in the field of building materials, can solve the problems of poor water resistance, high cost, and corrosion of iron products, and achieve the effect of cost reduction and high density

Inactive Publication Date: 2011-07-20
XINJIANG URBAN CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor water resistance of gypsum-based self-leveling materials, its acidity has a rusting effect on iron products, and its application range is limited.
Cement-based self-leveling materials can be divided into one-component and two-component. Two-component cement-based self-leveling materials are mainly added with polymer emulsion as an independent second component, which is mixed with the first component in a certain proportion when used. , its disadvantage is that it is inconvenient to transport
One-component cement-based self-leveling material is dry powder mortar, which is suitable for transportation and construction, but the cost is high

Method used

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  • Cement-based self-leveling dry powder mortar for high-cracking-resistance ground

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Embodiment 1: A kind of cement-based self-leveling dry powder mortar for high anti-cracking ground is composed of cement, fine sand, heavy calcium powder, lithium slag powder, expansion agent, coagulation regulator, superplasticizer, defoamer, anti-cracking agent Fiber composition, the specific raw material composition ratio is calculated in parts by weight: 300 parts of 42.5R ordinary Portland cement, 550 parts of fine sand of 20-150 mesh aeolian sand, 30 parts of heavy calcium powder, of which CaCO 3 Content ≥ 95%, fineness specification is specific surface area 300 ~ 400m 2 / kg, 90 parts of lithium slag powder, the fineness specification is specific surface area ≥ 300m 2 / kg, 20 parts of commercially available calcium sulfate (AEA) expansion agents, 1.5 parts of lithium carbonate as coagulation regulator, 5 parts of casein as superplasticizer, and 5 parts of casein as commercially available P803 powdered defoamer produced by Mingling Chemical in Germany. 2 parts, ant...

Embodiment 2

[0039] Embodiment 2: A kind of cement-based self-leveling dry powder mortar for high anti-cracking ground is composed of cement, fine sand, heavy calcium powder, lithium slag powder, expansion agent, coagulation regulator, superplasticizer, defoamer, anti-cracking agent Fiber composition, the specific raw material composition ratio is calculated in parts by weight: 300 parts of 42.5R ordinary Portland cement, 500 parts of fine sand of 20-150 mesh aeolian sand, 100 parts of heavy calcium powder, of which CaCO 3 Content ≥ 95%, fineness specification is specific surface area 300 ~ 400m 2 / kg, 60 parts of lithium slag powder, the fineness specification is specific surface area ≥ 300m 2 / kg, 30 parts of commercially available calcium sulfoaluminate (UEA) expansion agent, 7 parts of calcium formate as coagulation regulator, 3 parts of polycarboxylate powder as superplasticizer, commercially available P803 powder produced by Mingling Chemical in Germany The anti-cracking fiber is 1 ...

Embodiment 3

[0041] Table 1 Performance test results of cement-based self-leveling dry powder mortar for high-crack-resistant ground obtained in the examples

[0042]

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to cement-based self-leveling dry powder mortar for the ground. The cement-based self-leveling dry powder mortar for the high-cracking-resistance ground consists of cement, fine sand, heavy calcium powder, lithium slag powder, an expanding agent, a solidification adjusting agent, a super plasticizer, a defoaming agent and cracking-resistant fiber. The cement-based self-leveling dry powder mortar for the high-cracking-resistance ground has the characteristics of low cost, high flowing property, bleeding resistance and adjustable setting time during construction as well as high intensity, high cracking resistance, high wearing resistance and flat surface after being hardened. The dry powder mortar has high performance and low cost, and can be widely applied to the fields of ground engineering such as factories, warehouses, shopping plazas, parking lot terrace and the like.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a cement-based self-leveling dry powder mortar for ground. Background technique [0002] Self-leveling mortar material has the characteristics of very good fluidity, self-leveling ability, low shrinkage rate, high compressive strength, etc., and is widely used in residential, hospital, supermarket and other public building indoor ground and industrial ground leveling projects. [0003] At present, the self-leveling mortar materials used in China are usually divided into organic and inorganic. The organic self-leveling materials are mainly epoxy resin self-leveling materials, which have good construction performance, but the price is high, the construction requirements are high, and the wear resistance is poor. Inorganic self-leveling materials are divided into gypsum-based self-leveling materials and cement-based self-leveling materials. Due to the poor water resistan...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B40/0608C04B28/04C04B28/10Y02W30/91C04B14/06C04B14/28C04B18/144C04B20/0076C04B22/008C04B2103/20C04B2103/32C04B2103/50C04B2103/58C04B7/02C04B7/323C04B16/0633C04B16/0641C04B16/0658C04B16/0683C04B22/10C04B22/124C04B22/126C04B22/147C04B22/16C04B24/04C04B24/06C04B24/10C04B24/2641C04B22/143C04B24/14
Inventor 白建飞冯涛刘玉荣
Owner XINJIANG URBAN CONSTR GRP CO LTD
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