Wet-mix plastering mortars prepared from stone chips and tailings sand

A technology for plastering mortar and tailings sand, applied in the field of wet-mix plastering mortar, can solve the problems of poor working performance of wet-mixed plastering mortar, unsatisfactory particle gradation of stone chips, and not being reasonably utilized, etc. Guaranteed continuity of use, low price, and the effect of solving bleeding problems

Active Publication Date: 2016-08-31
青岛磊鑫混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tailings sand is the waste produced during the mining and processing of iron ore. Because it is not properly utilized, a large amount of tailings sand accumulates, occupies land, and causes environmental pollution.
However, when stone chips are used instead of river sand to prepare wet-mix plastering mortar, there are often the following two problems: (1) The particle size distribution of stone chips does not meet the requirements, resulting in bleeding problems (sinking of mixed coarse aggregate, floating phenomenon of water) ) serious; (2) The prepared wet-mixed plastering mortar has poor working performance, no fluidity and no cohesive force

Method used

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  • Wet-mix plastering mortars prepared from stone chips and tailings sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The wet-mixed plastering mortar prepared with stone chips and tailings sand consists of the following components: 180kg cement, 70kg fly ash, 70kg mineral powder, 220kg water, 1150kg stone chips, 350kg tailings sand, and 5kg mortar admixture. Wherein, the mortar additive is a thickening agent, and the thickening agent is composed of the following components: 2kg sulfonic acid air-entraining agent, 30kg naphthalene water reducer, 6kg sodium gluconate, 0.5kg polypropylene short fiber, 8kg latex powder, 40kg sodium bentonite. Take by weighing 5kg from the prepared thickening agent for the preparation of plastering mortar. The particle size of the stone chips is not greater than 4.75mm, and the weight fraction of stone powder in the stone chips is 2-3%; the gradation range of the stone chips is: 4.75mm: 10-20; 2.36mm: 25-50; 1.18 mm: 40~50; 0.6mm: 60~90; 0.3mm: 80~95; 0.15mm: 90~100; the fineness modulus is 3.1~4.0. The particle size of the tailings sand is not greater th...

Embodiment 2

[0020] The difference from Example 1 is that the wet-mixed plastering mortar prepared with stone chips and tailings sand consists of the following components: 200kg cement, 80kg fly ash, 50kg mineral powder, 230kg water, 1250kg stone chips, 200kg tailings sand , 10kg mortar admixture. Wherein, the mortar additive is a thickening agent, and the thickening agent is composed of the following components: 3kg sulfonic acid air-entraining agent, 40kg naphthalene water reducer, 2kg sodium gluconate, 1.5kg polypropylene short fiber, 10kg latex powder, 20kg sodium bentonite. Take by weighing 10kg from the prepared thickening agent for the preparation of plastering mortar.

Embodiment 3

[0022] The difference from Example 1 is that the wet-mixed plastering mortar prepared with stone chips and tailings sand consists of the following components: 220kg cement, 60kg fly ash, 60kg mineral powder, 250kg water, 1000kg stone chips, 280kg tailings sand , 15kg mortar admixture. Wherein, the mortar additive is a thickening agent, and the thickening agent is composed of the following components: 4kg sulfonic acid air-entraining agent, 20kg naphthalene water reducer, 4kg sodium gluconate, 2kg polypropylene short fiber, 5kg Latex powder, 30kg sodium bentonite. Take by weighing 15kg from the prepared thickening agent for the preparation of plastering mortar.

[0023] Table 1 Performance index of wet-mixed plastering mortar prepared in three examples

[0024]

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Abstract

The invention discloses wet-mixed plastering mortar prepared from stone chips and tailing sand. The wet-mixed plastering mortar comprises the following components in parts by weight: 18-22 parts of cement, 6-8 parts of coal ash, 5-7 parts of mineral powder, 22-25 parts of water, 100-125 parts of the stone chips, 20-35 parts of the tailing sand and 0.5-1.5 parts of a mortar additive, wherein the particle sizes of the stone chips are not greater than 4.75 mm and the stone chips comprise 2-3% of stone powder; the particle size of the tailing sand is not greater than 2.36 mm and the tailing sand comprises 5-10% of mud; the mortar additive is a thickener and comprises the following components in parts by weight: 2-4 parts of a sulfonic acid air entraining agent, 20-40 parts of a naphthalene water reducer, 2-6 parts of sodium gluconate, 0.5-2 parts of polypropylene staple fibers, 5-10 parts of latex powder and 20-40 parts of sodium bentonite. The stone chips and the tailing sand are adopted for replacing machine-made sand and river sand, so that the environmental pollution caused by waste stone chips and tailing sand is alleviated and the production cost of the mortar is reduced.

Description

technical field [0001] The invention relates to a building raw material and a production process thereof, in particular to a plastering mortar, in particular to a wet-mixing plastering mortar prepared from stone chips. Background technique [0002] Ordinary site-mixed mortar is mixed with cement, river sand, and clear water, and after hardening, it plays the role of bonding building materials together to form a solid whole. With the technological progress of the construction industry and the improvement of civilized construction requirements, the on-site mixing mortar has increasingly shown its inherent defects, such as unstable mortar quality, large waste of materials, single type of mortar, low degree of civilized construction, and environmental pollution. Therefore, it is imperative to adopt industrially produced ready-mixed mortar, which is an important measure to ensure the quality of construction projects, improve the modernization level of construction, and reduce urb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/30C04B24/24C04B16/06
CPCY02W30/91
Inventor 胡涛胡琳王赛显刘伟民王作峰
Owner 青岛磊鑫混凝土有限公司
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