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碱性氧炉渣部分替代砂土混凝土抗弯强度研究

摘要

本研究工作评价了在M-25级混凝土中使用碱性氧炉渣作为细骨料的替代品。用碱性氧炉渣代替部分细骨料。配制好的混合料被命名为Mix-A, Mix-B, Mix-C和Mix-D。分别以0%、15%、25%和35%替代水平制备混合料。水灰比均为0.46。为研究采用上述复合材料浇铸的梁构件的抗弯性能和响应，对梁试件和配制的复合材料进行了7 d和28 d的抗弯强度试验、密度试验和坍落度试验。在进行上述测试时遵循IS标准。将所得结果与对照M-25混凝土配合比进行了比较。研究结果发现，不同比例的补充成分添加到M-25混凝土混合物。碱性氧炉渣的替代使M-25混凝土的抗弯强度得到一定程度的提高。 After adding 15% Basic Oxygen furnace slag in the mix, there is an increase of 17.67% strength after 7 days, and 17.26% increase after 28 days. The Flexural strength increases as compared to control mix as the percentage of Basic Oxygen furnace slag is increased. At 25% addition of Basic Oxygen furnace slag in the mix, there is an increase of 28.37% strength after 7 days, and 23.31% increase after 28 days. A decline in Flexural strength as compared to control mix was observed when the percentage of Basic Oxygen furnace slag was increased to 35%. A decrease by 3.16% was observed after 7 days, and 16.42% decrease after 28 days. Slump and unit weight of thus manufactured concrete also increases with the addition of Basic oxygen furnace slag to it. Thus Basic oxygen furnace slag can be successfully used in concrete, to improve flexural strength, slump values and weight of concrete as wells.

Musawir Quadir

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