Abstract
TENSILE STRENGTH OF CONCRETE WITH BIOMEDICAL WASTE ASH
Bashir Ahmed Memon*, Ghulam Mustafa Khanzada, Mahboob Oad* and Abdul Hafeez Buller
ABSTRACT
Use of alternative ingredients and management of waste generated from different primary processes is active area of research around the globe. This research article combines both aspects by investigating the tensile strength of concrete made with partial replacement of cement with biomedical waste ash. Ten by weight replacement of cement (0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% and 1.0%) were used to cast 288 concrete cylinders of standard size. 1:2:4 concrete mix with 0.5 w/c ratio was used. Additionally, one batch of concrete cylinders was prepared without biomedical waste to compare the results of proposed concrete. Curing of specimens was done for 7-, 14-, 28- and 90-day. Comparison of the results shows that the tensile strength of proposed concrete was within the specified range of tensile strength of conventional concrete. In relation with 28-day cured conventional concrete minimum reduction is obtained at 5% dosage of 28-day cured specimens. Elongated curing shows increase in the parameter for all levels of cement replacement with the waste ash. Maximum increase is recorded at 1% replacement of cement with ash.
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