ABSTRACT:
Laterites and Lateritic Stones abound in the tropical and semi-tropical areas of the world, more than the igneous and other standard rocks which are used as concrete aggregates and road chippings. The paper studies the properties relevant to the use of lateritic aggregate as road chippings and concrete aggregates, and compares the results to those obtained by the use of an igneous control aggregate. The strength growth pattern of concrete made with lateritic stones, the variation of the tensile strength of the concrete (both flexural and split); the reproducibility of the strength pattern, despite the known variability in the properties of the lateritic aggregates; the influence of the iron and aluminium oxide contents of the aggregates on concrete made with them etc., are some of the parameters investigated in detail to assess the suitability of lateritic stones and crusts as concrete aggregates and road chippings. The results show that lateritic aggregates are good materials for road chippings and concrete aggregates although they give results slightly inferior to those obtained from igneous aggregates. There does not appear to be any simple relation between the iron and aluminium oxide contents or the sesquioxide contents of lateritic aggregates and the properties of the resulting concrete, although the sesquioxide contents of the lateritic stones give very broad indications of their quality.
Materials and Structures 10/1980; 13(6):403-411. DOI:10.1007/BF02473899
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