Physico-Mechanical Impact of Different Cem Ii 42.5 MPA Cement Brands On Hardened Concrets in Cameroon
Keywords:
Physico-Mechanical, strength, Concrete, Cement, Strength ClassAbstract
Cement is defined as a hydraulic binder composed of finely ground powdered materials which, when mixed with water or a saline solution, form a plastic paste capable of binding various substances as it hardens. This study aims to highlight the impact of different class II cements (strength class 42.5 MPa) available on the Cameroonian market (ROBUST, CIMAF, DANGOTE, and MEDCEM) on the compressive strength of hardened concrete at different curing ages. To determine which cement brand provides the best compressive strength at maturity, a series of tests were carried out on samples from each brand, including consistency, setting time, density, compressive strength, and water absorption. The results support our hypothesis: cements are often used indiscriminately with identical dosages, based solely on their mass, in an attempt to achieve similar compressive strength outcomes. The study revealed that the finer the cement, the higher its compressive strength. Additionally, less dense cements produce lighter concretes but require more water for optimal workability, which affects the water-to-cement ratio. DANGOTE cement exhibited the highest compressive strength (29.09 MPa), followed by MEDCEM, and all the studied cements exceeded the target strength of 25 MPa at 28 days.
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