出版社：The International Institute for Science, Technology and Education (IISTE)
摘要：This study investigated the durability of concrete made of ordinary Portland cement (OPC), bamboo leaf ash (BLA) and pulverized burnt clay waste (PBCW) as binders in sulphate environment. Ternary blending of OPC, BLA and PBCW at ten (10) levels (100:0:0; 90:5:5; 90:10:0; 90:0:10; 80:5:15; 80:10:10; 80:15:5; 70:10:20; 70:15:15; 70:20:10) were used in producing 480 concrete cubes of size 100 mm and cured for 28 days in water. Further exposure to sulphuric acid (H 2 SO 4 ) of 0, 1, 3 and 5% concentrations was done for a maximum of 120 days. Strength deterioration factors were thereafter calculated as a measure of acid attack resistance for the blended cement concrete. Results show that concrete containing PBCW and BLA performed better in H 2 SO 4 than that of the control. Therefore, it can be concluded that the incorporation of BLA and PBCW in concrete improved its durability in sulphate laden environment.
其他摘要：This study investigated the durability of concrete made of ordinary Portland cement (OPC), bamboo leaf ash (BLA) and pulverized burnt clay waste (PBCW) as binders in sulphate environment. Ternary blending of OPC, BLA and PBCW at ten (10) levels (100:0:0; 90:5:5; 90:10:0; 90:0:10; 80:5:15; 80:10:10; 80:15:5; 70:10:20; 70:15:15; 70:20:10) were used in producing 480 concrete cubes of size 100 mm and cured for 28 days in water. Further exposure to sulphuric acid (H 2 SO 4 ) of 0, 1, 3 and 5% concentrations was done for a maximum of 120 days. Strength deterioration factors were thereafter calculated as a measure of acid attack resistance for the blended cement concrete. Results show that concrete containing PBCW and BLA performed better in H 2 SO 4 than that of the control. Therefore, it can be concluded that the incorporation of BLA and PBCW in concrete improved its durability in sulphate laden environment. Keywords: durability, sulphuric acid, bamboo leaf ash, pulverized burnt clay waste, strength deterioration
