Influence of Superplasticized Concrete on the Compressive Strength of Highway Pavements
Authors: Akiije I, Ajenifuja AN
DOI Info: http://doi.org/10.5281/zenodo.5047754
A quest for highly durable rigid and flexible pavements has led to the need to investigate superplasticized concretes as a way to economically prevent accidents on roads. In this study, superplasticized concrete cube as well as I-shape, Z-shape and rectangular shaped paver samples were made as specimens in the laboratory. The superplasticized concretes were produced using MasterGlenium SKY 504-BASF superplasticizer with five different types of made in Nigeria cement brands. The grades of the cement used were of 53N, 43N, 43R, 33N and 33R. Each production had 0.3 water cementitious ratio using 1.5% superplasticizer and a ratio of 1:1:2 concrete mixtures per each brand of cement. The results showed that the cube models had the highest strength values compared with the other three types of paver samples. Among paver samples, Z-shape pavers had the highest compressive strength values for 7, 28, 56 and 91 days curing followed by rectangular pavers and I-shape pavers. The characterization of the five different types of superplasticized concretes investigated revealed that only the cube models and Z-shape pavers produced with grade 53N cement satisfied the required pavement comprehensive strengths of 45 N/mm2 and 55N/mm2 for use as medium and heavy to very heavy traffic categories respectively.
Affiliations: Department of Civil and Environmental Engineering, Faculty of Engineering, University of Lagos, Akoka, Lagos State, Nigeria.
Keywords: Rigid Pavement, Flexible Pavement, Superplasticized Concrete, Paving Blocks, Compressive Strength
Published date: 2021/06/30