会议专题

Improving Compressive Strength of PCC by Using a Combined Method of Mechanical Vibration and Compulsory Mixing

  The effect of vibratory mixing on the compressive strength of Portland cement concrete(PCC) was investigated.The microstructures of the concrete samples prepared by vibratory mixing were investigated by using scanning electron microscopy(SEM) and mercury intrusion porosimetry(MIP) techniques in order to exam the mechanism of vibratory mixing on improving the strength.The rational vibratory mixing parameters were obtained according to orthogonal experiments of the concrete strength.The experiment results showed that the vibratory mixing with rational parameters increased the concrete compressive strength by about 15% over the common compulsory mixing.In addition, vibratory mixing improved the structure of the interfacial transition zone and hydration of cement paste, as well as reduced the number of harmful large pores.

PCC concrete vibratory mixing compressive strength microstructure

Zhao Lijun Ding Weiwei Dong Wu

Key Laboratory of Highway Construction Technology and Equipment of Ministry of Education,Changan University, Xian, 710064, China

国际会议

The 2015 International Conference on Advances in Construction Machinery and Vehicle Engineering(2015 工程机械与车辆工程新进展国际学术会议)

西安

英文

548-553

2015-09-18(万方平台首次上网日期,不代表论文的发表时间)