Study on Effect of High Voltage Pulse Electrode Spacing on Broken Concrete Physical Performance

Abstract

In order to study on effect of high voltage pulse electrode spacing on broken concrete physical performance, through four electrode spacing in the concrete crush test, analysis of electrode spacing effect on water absorption and loss rate of aggregate, particle size distribution, crushing value and surface roughness. The test results show that after concrete crushed by the pulse, crushed aggregate mainly assumes three kinds of apparent form; With the electrode spacing increasing, concrete crushing grain group present diversity, continuous graded aggregate gradually formed; The water absorption rate of large particle size assumes the albeit slowly trend compared the small one, on the whole, within 1 hour, aggregate absorbent ability quickly reach the maximum, grain group for 5-20 mm and 16-31.5 mm compare 0.16 hours increased by 25.53% and 12.86% respectively, to 24 hours, only increased by 18.82% and 3.02% compared the early time(one hour)condition respectively; For water loss, large and small particle size both show the increase trend; The aggregate particle size mass within the scope shows the tendency of increase after the first reduce overall.