BEHAVIOUR OF PERIWINKLE SHELL ASH BLENDED CEMENT  CONCRETE IN SULPHURIC ACID ENVIRONMENT

IC Attah; RK Etim; DU Ekpo

doi:10.4314/njt.372.1661

BEHAVIOUR OF PERIWINKLE SHELL ASH BLENDED CEMENT CONCRETE IN SULPHURIC ACID ENVIRONMENT

Authors

IC Attah DEPT. OF CIVIL ENGINEERING, AKWA IBOM STATE UNIVERSITY, IKOT AKPADEN, AKWA IBOM STATE. NIGERIA
RK Etim DEPT. OF CIVIL ENGINEERING, AKWA IBOM STATE UNIVERSITY, IKOT AKPADEN, AKWA IBOM STATE. NIGERIA
DU Ekpo DEPT. OF CIVIL ENGINEERING, AKWA IBOM STATE UNIVERSITY, IKOT AKPADEN, AKWA IBOM STATE. NIGERIA

DOI:

https://doi.org/10.4314/njt.372.1661

Keywords:

Cement, Compressive strength, Concrete, Periwinkle shell ash, Sulphuric acid.

Abstract

This paper presents the influence of sulphuric acid on compressive strength of concrete made with cement blended with periwinkle shell ash (PSA). The cement component was replaced with PSA at 0 %, 5 %, 10 %, 15 % and 20 %. Concrete mix ratio of 1:2:4 and a constant water cement ratio of 0.6 was used. A total of 180 cube specimens (150mm x 150mm x 150mm) were cast and tested for compressive strength at 7, 14, 21 and 28 days of immersion in potable tap water (as control) and (5 % and 10 %) sulphuric acid solutions. Test results showed that the compressive strength increased with age and decreased with PSA content for specimen cured in water (control); while for specimen cured in sulphuric acid solutions, the compressive strength decreased with age, PSA content as well as sulphuric acid content. The statistical analysis of variance showed that the sulphuric acid concentrations, PSA contents and curing age have effect on the concrete compressive strength. Regardless of the concentration of exposure conditions, it is concluded that PSA did not lighten the adverse effects of sulphuric acid on the compressive strength of cement blended with PSA.

http://dx.doi.org/10.4314/njt.v37i2.5

Downloads

Published

2018-03-31

Issue

Vol. 37 No. 2 (2018)

Section

Building, Civil & Geotechnical Engineering

License

The contents of the articles are the sole opinion of the author(s) and not of NIJOTECH.

NIJOTECH allows open access for distribution of the published articles in any media so long as whole (not part) of articles are distributed.

A copyright and statement of originality documents will need to be filled out clearly and signed prior to publication of an accepted article. The Copyright form can be downloaded from http://nijotech.com/downloads/COPYRIGHT%20FORM.pdf while the Statement of Originality is in http://nijotech.com/downloads/Statement%20of%20Originality.pdf

For articles that were developed from funded research, a clear acknowledgement of such support should be mentioned in the article with relevant references. Authors are expected to provide complete information on the sponsorship and intellectual property rights of the article together with all exceptions.

It is forbidden to publish the same research report in more than one journal.

How to Cite

BEHAVIOUR OF PERIWINKLE SHELL ASH BLENDED CEMENT CONCRETE IN SULPHURIC ACID ENVIRONMENT. (2018). Nigerian Journal of Technology, 37(2), 315-321. https://doi.org/10.4314/njt.372.1661