文献类型：期刊文献

英文题名：Molding process effects on compressive strength and permeability coefficient of non-fine concrete and its evaluation method

作者：Li, Na[1]; Wu, Gang Ping[1]; Feng, Li[1]; Chi, Xuchao[2]; Zhang, Fang[1]

机构：[1] Department of Building Engineering, Shaoxing University, Shaoxing, China; [2] Melbourne School of Design, Melbourne University, Victoria, Australia

年份：2014

卷号：19

期号：Y

起止页码：8915

外文期刊名：Electronic Journal of Geotechnical Engineering

收录：EI(收录号：20144400133102)、Scopus(收录号：2-s2.0-84908056872)

语种：英文

外文关键词：Molding - Vibration analysis - Compressive strength - Water absorption

外文摘要：With larger porosity, good water permeability and the ability to meet certain compressive strength, non-fine concrete has been widely applied to the construction project. The molding process has a great influence on the compressive strength and the water absorption of non-fine concrete. Based on the non-fine concrete molding process, relevant experimental data have been analyzed by the following three molding parameters: the number of insert-compact time, vibration times and molding pressure. It shows that compressive strength monotonically increases with the increasing number of insert-compact time, but at 15 insert-compact time with a rate inflection point. Compressive strength shows an increase first and then decrease with vibration time and molding pressure increase, the maximum value corresponding to vibration time and molding pressure are 8s and 80 kN. Permeability coefficient decreases monotonically with the increasing parameter. Moreover, empirical formulas for vibration time-dependent compressive strength and permeability coefficient are proposed. Finally, the sensitivity of the compressive strength and permeability coefficients is revealed. ? 2014 ejge.