Concrete prepared from industrial solid waste materials

A technology of industrial solid waste and concrete, which is applied in the field of concrete, can solve the problems of a large amount of yellow sand and cannot meet the cost requirements, and achieve good workability, reduce production costs, and save resource materials.

Inactive Publication Date: 2012-06-13
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the concrete prepared in this way still needs a large amount of yellow sand, which cannot meet the requirements of enterprises for the prepared concrete to have excellent performance and reduce costs.

Method used

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  • Concrete prepared from industrial solid waste materials
  • Concrete prepared from industrial solid waste materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The concrete that adopts the industrial solid waste material preparation of the present embodiment, its composition and the weight percentage of each composition are as follows:

[0021]

[0022] The sum of the weight percentages of the above compositions is 100%.

[0023] The specific preparation process is as follows: First, mix cement, fly ash, modified mineral powder mixed with ultra-fine steel slag powder and hemihydrate desulfurization gypsum, yellow sand, mining debris, crushed stone, admixtures, etc. to prepare various raw materials for concrete. Carry out performance testing according to the standard; send the inspected and accepted raw materials into the corresponding silos; input the mix ratio after design verification into the production automatic control system; The feeding sequence of mineral powder) - mixing water - admixtures is sequentially fed, and the mixing is performed for 40 to 50 seconds, and the concrete slump is controlled to 120 to 160 mm. ...

Embodiment 2

[0027] The concrete that adopts the industrial solid waste material preparation of the present embodiment, its composition and the weight percentage of each composition are as follows:

[0028]

[0029] The sum of the weight percentages of the above compositions is 100%.

[0030] The specific preparation process is as follows: First, mix cement, fly ash, modified mineral powder mixed with ultra-fine steel slag powder and hemihydrate desulfurization gypsum, yellow sand, mining debris, crushed stone, admixtures, etc. to prepare various raw materials for concrete. Carry out performance testing according to the standard; send the inspected and accepted raw materials into the corresponding silos; adjust and optimize the concrete mix ratio and input it into the automatic production control system; according to coarse aggregate - mining debris - yellow sand - cementitious materials (cement, fly ash, Mineral powder)-mixing water-admixture feeding sequence in turn, mix for 30-40 sec...

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Abstract

The invention discloses concrete prepared from industrial solid waste materials. The concrete provided by the invention comprises above 30% of industrial solid waste materials and has unit weight of 2335 to 2372kg / m<3>. The concrete provided by the invention is characterized by comprising 8 to 16 wt% of cement PO42.5, 2 to 4 wt% of slag micro-powder, 2 to 4 wt% of fly ash, 0.4 to 0.8 wt% of steel slag micro-powder, 0.1 to 0.2 wt% of semi-hydrated desulfurized gypsum, 27 to 29 wt% of mining scraps, 3 to 9 wt% of yellow sand, 43 to 45 wt% of crushed stones, and the balance mixing water and an additive. The concrete prepared from industrial solid waste materials has low production cost, greatly saves resource materials, has good workability, pumpability, strength and durability, provides a novel approach for solid waste comprehensive utilization, and has obvious social, economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete prepared by using industrial solid waste materials. Background technique [0002] With the rapid development of my country's economic construction, the demand for commercial concrete is increasing year by year. At present, the preparation technology of commercial concrete generally uses a large amount of yellow sand, so its resources are becoming more and more scarce. The characteristics of yellow sand are: one is that its particle shape is smooth, and the other is that its particle gradation is continuous. Therefore, concrete prepared with yellow sand with a fineness modulus of 2.2 to 2.8 has better water retention, cohesion and pumpability, and is deeply affected by construction. Unit welcome. [0003] However, in the dry season every year, the transportation of yellow sand is difficult, resulting in great price fluctuations. Moreover, the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/30
CPCY02W30/91
Inventor 张耀王彩英康明林长农李炳南浦明宝须海峰蔡海东王桂莲程先海鲍玉英陈明昌张延军
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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