The influence of coarse aggregate and reinforcement on the anchorage bond strength of laterized concrete

Many factors are known to affect the anchorage bond stress of laterized concrete. Laterized concrete is concrete in which some, or all, of the fine aggregate is from lateritic soils. The effect of types of coarse aggregate and reinforcement on the anchorage bond stress of laterized concrete was investigated in this study. The punching test method was used to determine the anchorage bond stress characteristics of laterized concrete specimens cured for 28 days. The results have shown that for the crushed granite and the dug-up aggregates ("dug-up aggregate" refers to aggregates obtained from natural sources and have almost the same size range with the crushed granite), the values of anchorage bond stress obtained compare well with those of the ordinary concrete but higher than that of the lightweight concrete. The anchorage bond stress values obtained for specimens made of dug-up aggregates are higher than those obtained for crushed granite. Higher anchorage bond stress values were obtained for laterized concrete specimens containing deformed bar reinforcement than those containing plain bar reinforcement. Laterized concrete specimens having higher cement content produced higher anchorage bond stress. (C) 2002 Elsevier Science Ltd. All rights reserved.