Preparation method of all-iron tailing waste rock aggregate pervious concrete

The invention provides a preparation method of all-iron tailing waste rock aggregate pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps of: by taking 27%-35% of P.O42.5-grade ordinary Portland cement, 54%-64% of iron tailing waste ro...

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Bibliographische Detailangaben
Hauptverfasser: ZHANG HONGBO, ZHANG ZENGQI, HAN FANGHUI, ZHOU YU, PU SHAOCHANG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention provides a preparation method of all-iron tailing waste rock aggregate pervious concrete, and belongs to the technical field of building materials. The method comprises the following steps of: by taking 27%-35% of P.O42.5-grade ordinary Portland cement, 54%-64% of iron tailing waste rock aggregate with the particle size of 4.75-9.5 mm, 0.1%-0.5% of an air entraining agent and a water reducing agent and 1.5%-2.2% of silica fume as raw materials, mixing and stirring the air entraining agent, the water reducing agent and water well to obtain a mixed solution; and well mixing and stirring the iron tailing waste rock aggregate, the ordinary Portland cement, the silica fume and half of the mixed solution, adding the rest of the mixed solution, continuing to stir well, putting the mixture into a mold, and curing for 28 days under standard curing conditions to obtain pervious concrete. The pervious concrete is prepared by using the iron tailing waste rocks to completely replace natural aggregate and usi