Machine-made dry-mixed plaster mortar suitable for mechanized spraying

A plastering mortar and machine-made sand technology, which is applied in the field of machine-made sand dry-mixed plastering mortar and dry-mixed plastering mortar, and can solve the problems of machine-made sand with many edges and corners, inability to adapt to mechanized spraying, and poor fluidity

Inactive Publication Date: 2013-09-25
SHAOXING YISHENG MORTAR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problems of the prior art, the object of the present invention is to provide a machine-made sand dry-mixed plastering mortar suitable for mechanized spraying. Problems that cannot adapt to mechanized spraying, such as poor performance and high water penetration rate

Method used

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  • Machine-made dry-mixed plaster mortar suitable for mechanized spraying
  • Machine-made dry-mixed plaster mortar suitable for mechanized spraying

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Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0018] Table 1

[0019]

[0020] Performance Testing

[0021] Test the water retention, setting time, 14d tensile bond strength, 28d shrinkage and frost resistance of the mortar of the present invention respectively according to the relevant regulations of JGJ / T70, according to Appendix A "Consistency Loss Rate Test Method" in GB-T25181-2010 The relevant regulations test the 2-hour consistency loss rate of the mortar of the present invention, and the test results are shown in Table 2.

[0022] Table 2

[0023]

[0024] According to JGJ / T70 standard test 28d compressive strength, the test results are as follows:

Embodiment 1

[0025] Embodiment 1 is the intensity grade of M5, and test result is 6.2MPa;

Embodiment 2

[0026] Embodiment 2 is the strength grade of M10, and test result is 10.6MPa;

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Abstract

The invention relates to machine-made dry-mixed plaster mortar suitable for mechanized spraying. The mortar is composed of the components of, by mass, 0-60% of limestone, 0-60% of limestone tailing, 0-28% of yellow sand, 9-25% of cement, and balance of an additive. The limestone and the limestone tailing are not simultaneously 0. The additive is a mixture of hydroxypropyl methyl cellulose ether, starch ether, re-dispersible latex powder and a thixotropic lubricant. According to the invention, through changing the component ratio of common plaster mortar, and with the additive and thickening agent with special performances, the problems of incapability to adapt to mechanized spraying caused by high angularity, poor fluidity, and high seepage rate of machine-made sand are solved. The mortar is a clean, energy-saving, and highly efficient representative in construction.

Description

technical field [0001] The invention relates to a dry-mixed plastering mortar, in particular to a machine-made sand dry-mixed plastering mortar suitable for mechanized spraying, which belongs to the field of building materials. Background technique [0002] Manufactured sand is made by mechanical crushing and screening, and the particle size is less than 4.75mm. Compared with natural sand, the source of machine-made sand is abundant and fixed, and the quality of raw materials is easy to control. In the production process, it is easy to produce defects such as stone powder, which cannot fully replace natural sand and is suitable for the production of mortar. Therefore, the dry-mixed plaster mortar produced with machine-made sand as raw material has defects such as poor fluidity and high water penetration rate, which cannot meet the requirements of mechanized construction. Therefore, it is one of the main tasks of those skilled in the art at this stage to develop a machine-mad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 方伟烽毛裕均祝张法余航斌陈邦荣王荣东
Owner SHAOXING YISHENG MORTAR
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