通过大量的试验结果表明,在天然河砂日趋紧张的情况下,用机制砂与石屑全部代替天然河砂配制出的C50及C50以上高强度混凝土同样具有很好的性能,运用在实际工程中,并取得了很好的效果。 Through a large number of test results show that in the case of natural river sand is becoming increasingly tight, the use of synthetic sand and stone chips instead of natural river sand prepared C50 and C50 above high-strength concrete also has good performance, used in practical engineering , And achieved good results.