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High grade concrete prepared from stone chips, iron mine tailings and polycarboxylate superplasticizer

A technology of iron tailings and water reducer, which is applied in the field of construction raw materials and high-grade concrete, which can solve the problems of land occupation and environmental pollution, achieve the effects of reducing water consumption, reducing production costs, and ensuring continuity of use

Inactive Publication Date: 2016-05-11
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

[0006] Iron ore tailings are the waste produced during the mining and processing of iron ore. Due to the lack of rational use, a large number of tailings are accumulated, occupying land, and causing environmental pollution.

Method used

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  • High grade concrete prepared from stone chips, iron mine tailings and polycarboxylate superplasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The high-grade concrete prepared by using stone chips, iron tailings and polycarboxylate superplasticizer in this embodiment includes the following components in parts by weight: 410 parts of cement, 50 parts of fly ash, and 60 parts of mineral powder; 180 parts of ore, 750 parts of stone chips, 880 parts of stones, 155 parts of water, 6.5 parts of polycarboxylate superplasticizer; the sand ratio is 0.51;

[0023] The fineness modulus of the stone chips is 3.1, and the mud content is 5%; the fineness modulus of the tailings sand is 1.7; the particle size of the stones is 5-31.5mm continuous gradation, and the mud content is 2.4%;

[0024] Polycarboxylate superplasticizer contains 0.5% thickener, thickener contains aggregate thickener, cellulose ether, air-entraining agent, inhibitor of aggregate stone powder adsorption superplasticizer, the superplasticizer mixed with The water reduction rate is 18% when the content is 1.5%C.

[0025] The cement is cyanine 42.5 ordinar...

Embodiment 2

[0027] The high-grade concrete prepared by using stone chips, iron tailings and polycarboxylate superplasticizer in this embodiment includes the following components in parts by weight: 400 parts of cement, 55 parts of fly ash, and 65 parts of mineral powder; 160 parts of mineral sand, 780 parts of stone chips, 870 parts of stones, 150 parts of water, 6.7 parts of polycarboxylate superplasticizer; sand ratio is 0.52; others are the same as in Example 1.

Embodiment 3

[0029] The high-grade concrete prepared by using stone chips, iron tailings and polycarboxylate superplasticizer in this embodiment includes the following components in parts by weight: 420 parts of cement, 50 parts of fly ash, and 50 parts of mineral powder; 190 parts of mineral sand, 720 parts of stone chips, 900 parts of stones, 153 parts of water, 6.5 parts of polycarboxylate superplasticizer; sand ratio is 0.50; others are the same as in Example 1.

[0030] Table 1 is the performance table of the high-grade concrete prepared by the embodiment of the present invention

[0031] Table 1

[0032]

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Abstract

The invention relates to a building raw material, and relates to a high grade concrete prepared from stone chips, iron mine tailings and a polycarboxylate superplasticizer. The high grade concrete comprises 400-420 parts of cement, 50-55 parts of fly ash, 50-65 parts of mineral powder, 160-190 parts of tailing sand, 720-780 parts of stone chips, 870-900 parts of cobblestones, 150-155 parts of water and 6.5-6.7 parts of the polycarboxylate superplasticizer, wherein the sand percentage is 0.50-0.52; the fineness modulus of the stone chips is 3.1, and the fineness modulus of the tailing sand is 1.7; and the particle size of the cobblestones is 5-31.5mm continuous grading. Commonly produced stone chips and iron mine tailings are used to substitute machine-produced sand and river sand produced through grading of cobblestones to be ground, so the production cost is reduced, and the adaptability of fine aggregates and the polycarboxylate superplasticizer is improved; and the high water reduction of the polycarboxylate superplasticizer is used, so the water consumption is reduced, the water-binder ratio is reduced, the viscosity of concrete is reduced, the concrete can be pumped, and the quality of the concrete is guaranteed.

Description

technical field [0001] The invention relates to a building raw material, in particular to a high-grade concrete, in particular to a high-grade concrete prepared by using stone chips, iron tailings and polycarboxylate water reducing agent. Background technique [0002] Ready-mixed concrete is one of the main engineering raw materials in today's building construction. Ready-mixed concrete has the characteristics of abundant raw materials, low price, simple production process, and convenient construction, so its usage is increasing. At the same time, ready-mixed concrete has the characteristics of high compressive strength, stable quality, good durability, convenient construction, environmental protection and sanitation. Ordinary on-site mixing concrete 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. [0003] In recent years, with the sustained and rapid development of infr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/12C04B18/04C04B24/26C04B103/30
CPCC04B18/0427C04B18/12C04B24/26C04B28/04C04B2103/302C04B2201/52C04B18/08C04B14/02Y02W30/91
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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