Machine-made sand self-compaction concrete

The invention discloses a machine-made sand self-compacting concrete. The concrete is made from the following components according to parts by weight: 100 parts of cement, 25-45 parts of fly ash, 0-30 parts of mineral powder, 0.8-1.5 parts of a polycarboxylic acid water reducing agent, 220-250 parts of machine-made sand, 130-150 parts of cobble and 130-150 parts of crushed stone. The concrete saves natural resource as well as has high fluidity, high stability and low slump loss; compared with equivalent effects, the concrete has the advantages of lower cost and simpler production, meanwhile, silicon dust is not applied to the concrete, therefore, the health of operators is better guaranteed.