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A curb stone concrete prepared with steel slag powder and slag powder
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A technology of slag powder and steel slag powder, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of destroying the natural environment, quarry without greening vegetation, environmental pollution, etc., to reduce natural pollution Effects of environmental damage, reduction of over-exploitation of resources, and reduction of production costs
Active Publication Date: 2016-09-14
鞍钢绿色资源科技有限公司
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Summary
Abstract
Description
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Problems solved by technology
[0002] Traditional curbstones are generally made of natural rocks, and the mining of rocks will open up mountains and explode rocks, seriously damaging the natural environment, and the abandoned quarries have not been restored to green vegetation, resulting in further desertification and making The natural environment cannot be restored and has become a local source of dust pollution
In the process of processing roadside stones with rocks, cutting and grinding are required, which will generate a large amount of waste water and dust, further causing environmental pollution
Method used
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Examples
Experimental program
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Effect test
Embodiment 1
[0021] [Implementation 1] A curbstone concrete prepared with steel slag powder and slag powder
[0022] Add 330kg of 42.5 grade ordinary Portland cement, 814kg of steel tailing slag, 900kg of slag sand, 96kg of slag powder, 48kg of steel slag powder, 209kg of water, and 5.3kg of water reducing agent to each cubic meter of concrete, of which the specific surface area of steel slag powder is 450m 2 / kg, the specific surface area of slag powder is 400m 2 / kg.
[0023] After weighing the above raw materials according to the proportion, put them into the mixer, and mix them evenly to get the required concrete. The strength of the concrete prepared in this example meets the requirements of C30 concrete, and the strength of the curb made by it is 25.2 MPa in 7 days and 40.6 MPa in 28 days.
Embodiment 2
[0024] [Implementation 2] A curbstone concrete prepared with steel slag powder and slag powder
[0025] Add 237kg of 42.5 grade ordinary Portland cement, 814kg of steel tailing slag, 900kg of slag sand, 140kg of slag powder, 96kg of steel slag powder, 189kg of water, and 5.3kg of water reducer to each cubic meter of concrete, of which the specific surface area of steel slag powder is 450m 2 / kg, the specific surface area of slag powder is 400m 2 / kg.
[0026] After weighing the above raw materials according to the proportion, put them into the mixer, and mix them evenly to get the required concrete. The strength of the concrete prepared in this example meets the requirements of C20 concrete, and the strength of the concrete curb produced therefrom is 15.6 MPa in 7 days and 31.6 MPa in 28 days.
Embodiment 3
[0027] [Implementation 3] A curbstone concrete prepared with steel slag powder and slag powder
[0028] Add 330kg of 42.5 grade ordinary Portland cement, 900kg of steel tailing slag, 900kg of slag sand, 96kg of slag powder, 48kg of steel slag powder, 142kg of water, and 5.3kg of water reducing agent to each cubic meter of concrete, of which the specific surface area of steel slag powder is 450m 2 / kg, the specific surface area of slag powder is 400m 2 / kg.
[0029] After weighing the above raw materials according to the proportion, put them into the mixer, and mix them evenly to get the required concrete. The strength of the concrete prepared in this example meets the requirements of C40 concrete, and the strength of the concrete curb produced therefrom is 35.2 MPa in 7 days and 51.6 MPa in 28 days.
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PUM
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Abstract
The invention relates to paving stone concrete prepared from steel slag powder and mineral slag powder. The paving stone concrete comprises a binding material consisting of steel slag powder, mineral slag powder and cement, aggregate consisting of steel tailings and mineral slag sand, water and a water reducing agent; and every cubic meter of concrete comprises the following components by weight: 48-200kg of steel slag powder with the specific surface area of 400-500m<2> / kg, 96-250kg of mineral slag powder with the specific surface area of 400-500m<2> / kg, 80-400kg of cement, 700-900kg of steel tailings with the granularity of 5-30mm, 700-900kg of mineral slag sand with the granularity of 0-5mm, 80-240kg of water and 5-10kg of the water reducing agent. Compared with the prior art, the paving stone concrete disclosed by the invention has the beneficial effects that: (1) most of the used materials are metallurgical solid waste materials, so that comprehensive utilization of resources and innocent and recycled treatment of the industrial wastes are realized; (2) with the adoption of the metallurgical solid waste materials, the production cost of the concrete paving stone can be reduced; and (3) unrestrained exploitation of resources caused by manufacture of the paving stone by using stone is reduced, and the damage to the natural environment is reduced.
Description
technical field [0001] The invention relates to the technical field of recycling metallurgical solid waste and the technical field of concrete preparation, in particular to roadside stone concrete prepared with steel slag powder and slag powder. Background technique [0002] Traditional curbstones are generally made of natural rocks, and the mining of rocks will open up mountains and explode rocks, seriously damaging the natural environment, and the abandoned quarries have not been restored to green vegetation, resulting in further desertification and making The natural environment cannot be restored, and it has become a local source of dust pollution. In the process of processing curb stones with rocks, cutting and grinding are required, which will generate a large amount of waste water and dust, further causing environmental pollution. [0003] There is also a kind of curbstone made of concrete, whose aggregates are stones and river sand, and the cementitious material is ...
Claims
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Application Information
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