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Gypsum-based self-leveling mortar prepared by taking molybdenum tailings as filler

A technology for self-leveling mortar and molybdenum tailings, which is applied in the field of building materials, can solve the problems of restricting the market promotion of gypsum-based self-leveling mortar, high quality requirements of quartz sand, and increasing production costs, and achieves good strength and leveling. The effect of low volume change rate and increased utilization rate

Active Publication Date: 2017-06-06
河北睿索固废工程技术研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing gypsum-based self-leveling mortar uses quartz sand as a filler, which requires high quality quartz sand, which increases production costs and limits the market promotion of gypsum-based self-leveling mortar

Method used

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  • Gypsum-based self-leveling mortar prepared by taking molybdenum tailings as filler
  • Gypsum-based self-leveling mortar prepared by taking molybdenum tailings as filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A gypsum-based self-leveling mortar with molybdenum tailings as filler

[0025] In parts by weight, 62 parts of α-gypsum, 35 parts of molybdenum tailings, 0.1 part of defoamer German Mingling P8030.1 part, 0.4 part of water reducing agent German BASF F10, 3 parts of volume stabilizer 525 sulfoaluminate cement, setting time It consists of 0.03 part of citric acid as regulator, 0.1 part of low viscosity HPMC as thickener, and 0.2 part of emulsified paraffin wax (purchased from Ningbo Hansheng Chemical Co., Ltd.) as anti-water agent. Mix the above raw materials at high speed and mix evenly.

Embodiment 2

[0026] Example 2: A gypsum-based self-leveling mortar with molybdenum tailings as filler

[0027] In parts by weight, 67 parts of α gypsum, 30 parts of molybdenum tailings, 0.1 part of defoamer German Mingling P8030.1 part, 0.4 part of water reducing agent German BASF F10, 2 parts of volume stabilizer 525 sulfoaluminate cement, setting time It is composed of 0.03 part of tartaric acid as regulator, 0.1 part of low-viscosity HPMC as thickener, and 1 part of water-resistant agent P.O 42.5 white cement. Mix the above raw materials at high speed and mix evenly.

experiment example 1

[0031] The gypsum-based self-leveling mortar obtained in Example 1, Example 2, and Comparative Example 1 were mixed with water at a mass ratio of 1:0.35, and the stirring time was 10 minutes. Inject into the mold, let it stand for 2 hours, and detect the cured gypsum, and the performance indicators are shown in Table 1.

[0032] Table 1: Performance Test Results

[0033]

[0034]

[0035] As can be seen from the above table, the initial setting time and final setting time of the gypsum obtained by mixing and solidifying the flat mortar prepared by the scheme of the present invention and water are shorter, and the consistency, dry compressive strength and dimensional shrinkage are comparable to those of The gypsum produced by the existing quartz sand filler flat mortar is equivalent. It can be seen that the flat mortar of the present invention can completely replace the existing flat mortar filled with quartz sand, greatly reduce the production cost of flat drift sand, a...

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Abstract

The invention relates to gypsum-based self-leveling mortar prepared by taking molybdenum tailings as filler. The gypsum-based self-leveling mortar is prepared from the following components in parts by weight: 50-70 parts of alpha gypsum, 30-45 parts of the molybdenum tailings, 0.1-0.2 part of a defoaming agent, 0.3-0.5 part of a water reducing agent, 1-3 parts of a volume stabilizer, 0-1 part of a coagulation time regulator, 0-1 part of a thickening agent and 0-1 part of a water repellent agent. The gypsum-based self-leveling mortar prepared by taking the molybdenum tailings as the filler has better strength and leveling property, and is lower in rate of volume change; the performance of the gypsum-based self-leveling mortar is improved, and the utilization rate of the molybdenum tailings is increased. The industrial solid waste-molybdenum tailings is utilized on the one hand, and the high-performance gypsum-based self-leveling mortar which meets the demands of grade level engineering is prepared on the other hand while the rapid development market demand of gypsum-based self-leveling is combined. The gypsum-based self-leveling mortar both meets the demand of comprehensive resource utilization and the demand of the grade level market.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a gypsum-based self-leveling mortar with molybdenum tailings as filler. Background technique [0002] Gypsum-based self-leveling mortar is a new type of ground self-leveling material. Its function is to use the natural flow properties of the material itself to flow and level the concrete floor to form a smooth ground leveling layer. With the increase in production capacity and cost reduction of domestic α-gypsum, and the continuous improvement of anhydrite-based self-leveling mortar product technology, gypsum-based self-leveling mortar will also enter a period of rapid development. [0003] The existing gypsum-based self-leveling mortar uses quartz sand as a filler, which requires high quality of quartz sand, increases production costs, and limits the market promotion of gypsum-based self-leveling mortar. Contents of the invention [0004] Aiming at the shortcomings of existi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/62
CPCC04B28/146C04B2111/62C04B2201/50C04B18/12C04B2103/50C04B2103/302C04B2103/0068C04B7/32C04B24/06C04B2103/44C04B24/36
Inventor 张吉秀陈旭峰毕晟张晔刘计康
Owner 河北睿索固废工程技术研究院有限公司
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