Composition of road surface material of pervious cement concrete by using steel slag as aggregate, and method

Abstract

This invention discloses a method for producing water-permeable cement concrete road surface material composition from steel slag. The components comprise: 3-8 mm steel slag (crush value is lower than 5%, and dissociated CaO content is less than 3%) 70-85%, C52.5 Portland cement 10-25%, reinforcing agent 0.5-1%, colorizing powder 0-1%, and water 3.5-5%. The road surface material composition has such advantages as high water permeability and high compressive strength. Besides, steel slag is utilized, which can save resources and reduce environmental pollution.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to an integral water-permeable cement concrete pavement material composition and method formed by vibrating waste steel slag and cement at room temperature. Background technique [0002] At present, the common cast-in-place monolithic permeable pavements mainly include polymer material bonding and cement-based bonding. The outdoor weather resistance of polymer materials is poor and the price is also high, which is not suitable for large-scale outdoor promotion. The integral permeable pavement made of cement-based adhesive materials has a good water permeability and low strength, and when the strength is high, water permeability cannot be guaranteed. It is difficult to balance the performance of these two aspects, so it cannot be widely promoted at present. Steel slag is currently difficult to use with high added value. A kind of metallurgical solid waste. At present, a large amount o...

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Problems solved by technology

[0002] At present, the common cast-in-place monolithic permeable pavements mainly include polymer material bonding and cement-based bonding. The outdoor weather resistance of polymer materials is poor and the price is also high, which is not suitable for large-scale outdoor promotion. The integral permeable pavement made of cement-based adhesive materials has a good water permeability and low strength, and when the strength is high, water permeability cannot be guaranteed. It is difficult to balance the performance of these two aspects, so it cannot be widely promoted at present. Steel slag is currently difficult to use with high added value. A kind of metallurgical solid waste. At present, a large amount of waste slag produced by steelmaking in major iron and steel plants in my country cannot be disposed of. It occupies land for a long time and is put on hold, wasting resources and causing certain environmental pollution.