Evaluation of strength relations in foamed aerated concrete ntaining pulverized bone (PB) as a partial replacement of cement

Authors

  • Christopher Fapohunda Department of Civil Engineering, Faculty of Engineering, Federal University, Oye-Ekiti, Nigeria
  • Efe Ikponmwrosa Department of Civil and Environmental Engineering, Faculty of Engineering, University of Lagos, Nigeria
  • Funso Falade Department of Civil and Environmental Engineering, Faculty of Engineering, University of Lagos, Nigeria

Keywords:

cement, compressive strength, pozzolan, pulverized bone, strength relations, tensile properties

Abstract

The focus of this paper is on the results of investigation conducted to find strength relationships in foamed aerated concrete in which cement has been partially replaced by pulverized cow bone by weight, up to 20 % at interval of 5 %. Concrete beam specimens of dimension 150 x 150 x 750 mm were used for the modulus of rupture test, while cylinder specimens 150 x 300 mm were used for the splitting tensile strength test. Compressive tests were carried out using 150 x 150 x 150 mm cube specimens. The results showed that (i) both the ratio of splitting tensile strength to compressive strength, and modulus of rupture to compressive strength were decreased with an increase in the replacement of cement with pulverized cow bone, (ii) both the ratio of splitting tensile strength to compressive strength, and modulus of rupture to compressive strength increased with curing ages. Also, the expressions relating splitting tensile strength and the modulus of rupture with compressive strength of foamed concrete containing pulverized bone as partial replacement of cement yielded results that compared well with the experimental data.

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Published

2018-01-25