振碾式乳化沥青-水泥混凝土的路用性能

采用振动法成型试件,对不同材料组成水泥混凝土的7 d、28 d抗压强度、抗折强度和28 d抗折模量做对比试验,其中包括普通水泥混凝土、掺入乳化沥青的水泥混凝土、掺入乳化沥青和不同含量消泡剂的水泥混凝土。试验结果表明,普通水泥混凝土的抗压强度、抗折强度和抗折模量值均不同程度地大于乳化沥青水泥混凝土的相应试验值,但乳化沥青水泥混凝土更具有韧性。在室内试验确定出混合料组成配比的基础上,通过振碾法铺筑了乳化沥青水泥混凝土试验路段,在不同使用时间的现场观测结果表明,在合理的材料配比及适宜的施工工艺下,乳化沥青水泥混凝土具有较好的路用性能。

Road performance of vibration-compaction emulsified-asphalt cement concrete

Performances of different cement concretes were tested in the lab.The materials include common cement concrete,emulsified-asphalt cement concrete(EACC) with different emulsified-asphalt content and different defoamer content.All samples were prepared through vibrating compaction and were cured for 7 d or 28 d.Results show that the unconfined compressive strength,flexural strength and flexural resilience modulus of common cement concrete are better than the one of EACC with different extent,but the toughness of EACC is better than the one of common cement concrete.Based on the lab experiments results,emulsifiedasphalt cement concrete was used to pave a test road,on-site observations show the field performance of the material is satisfied under rational ingredients proportion and good construction process.8 tabs,10 refs.