High-performance tephra machine-made sand concrete

The invention relates to the technical field of concrete preparation, in particular to high-performance tephra machine-made sand concrete. The concrete comprises, by mass, 11.50-16.00% of cement, 2.50-3.90% of tephra, 1.50-2.68% of fly ash, 28.00-30.60% of machine-made sand, 41.20-46.50% of gravel, 0.16-0.24% of admixture and 6.54-6.92% of water. According to the high-performance tephra machine-made sand concrete, local flooring can be fully utilized to save non-renewable resources of river sand and the like to help environmental protection and ecological balance, and engineering cost can be reduced to a great extent. 本发明涉及混凝土的制备技术领域，具体地指种高性能火山灰机制砂混凝土。所述的混凝土按照质量百分比包括下列组分：水泥11.50～16.00％，火山灰2.50～3.90％，粉煤灰1.50～2.68％，机制砂28.00～30.60％，碎石41.20～46.50％，外加剂0.16～0.24％，水6.54～6.92％。本发明的火山灰机制砂混凝土可以充分利用当地地材，节约河砂等不可再生资源，有利于环境保护和生态平衡，同时还能很大程度上的节约工程成本。