Novel dry-mixed plastering mortar

A plastering mortar and dry-mixing technology, which is applied in the field of building materials, can solve the problems of occupying agricultural land, casualties, air and water and soil pollution, and achieve the effects of avoiding damage, excellent performance, and reducing costs

Active Publication Date: 2014-04-23
SHAOXING YISHENG MORTAR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, a large number of stacked tailings not only cause serious pollution to the air, water and soil, but also occupy a large amount of agricultural land. In addition, if the management and design of the tailings sand storage are not good, collapse accidents will easily occur, causing casualties

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0019] Table 1

[0020]

[0021] Performance Testing

[0022] 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.

[0023] Table 2

[0024]

[0025] According to JGJ / T70 standard test 28d compressive strength, the test results are as follows:

Embodiment 1

[0026] Embodiment 1 is the strength grade of M5, and test result is 5.3MPa;

Embodiment 2

[0027] Embodiment 2 is the strength grade of M10, and test result is 11MPa;

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Abstract

The invention relates to a novel dry-mixed plastering mortar which is composed of the following components in percentage by mass: 20-50% of limestone, 0-30% of limestone tailing, 20% of iron tailing, 15% of yellow sand, 9-25% of cement and the balance of admixture. The admixture is composed of a modifier and a thickener, wherein the modifier is one or mixture of more of cellulose ether, water reducer, air entraining agent, retarder, starch ether and polyvinyl alcohol; and the thickener is mortar thickening powder. The invention effectively utilizes the limestone tailing and iron tailing, solves the problem of placement of the limestone tailing and iron tailing, and avoids the environmental damage of the limestone tailing and iron tailing; the invention lowers the cost of the dry-mixed plastering mortar; and the produced dry-mixed plastering mortar has excellent properties and can effectively substitute natural sand.

Description

technical field [0001] The invention relates to a mortar, in particular to a novel dry-mixed plastering mortar, which belongs to the field of building materials. Background technique [0002] With the increasing development of infrastructure construction, the demand for natural sand resources is also increasing. However, natural sand resources are non-renewable resources in a short period of time. The state has explicitly prohibited the mining of natural sand in some river sections, making natural sand resources increasingly scarce. On the other hand, a large number of stacked tailings not only cause serious pollution to the air, water and soil, but also occupy a large amount of agricultural land. In addition, if the management and design of the tailings sand storage are not good, it is very easy to collapse and cause casualties. Therefore, it is necessary to study how to make rational and effective use of tailings, make tailings "turn waste into treasure", become a substit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/12
CPCY02W30/91
Inventor 方伟烽余航斌陈邦荣毛裕均祝张法王荣东
Owner SHAOXING YISHENG MORTAR
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