Performance of Self-Compacting Concrete Cast in Hot Weather Conditions

Faculty Engineering Year: 2023
Type of Publication: ZU Hosted Pages: 1-15
Authors:
Journal: Scientific Review Engineering and Environmental Sciences Warsaw Univ. of Life Sciences Volume: 32
Keywords : Performance , Self-Compacting Concrete Cast , , Weather Conditions    
Abstract:
This work focused on how self-compacting concrete (SCC) performs in situ in hot weather conditions at an ambient temperature of about 35 oC. Tests for the rheological properties and compressive and splitting tensile strength aspects were carried out. The results of SCC mix ingredients on the rheological and hardened features of SCC mix were studied. Variations in the amount of Portland cement content (CC), water-cementitious (W/C) ratio, coarse to fine aggregate (C:F) ratio, chemical admixture ratio, and pozzolanic admixture ratio were considered. Optimum values were obtained for these ingredients, which satisfied the SCC rheological characteristics and gave a 28-day compressive strength of 42 MPa, and 52 MPa at 28 and 56 days, respectively. These optimum constituent values were 450 kg/m3 of cement, 0.45 water cementitious ratio, and a coarse to fine material ratio of 1:0.8, a high range superplasticizer of 2%, and a mineral admixture of either 5% SF or 25% FA as a substitute for similar amount cement.
   
     
 
       

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