Abstract

So as to conquer the environmental problems raised due to the concrete production and their ingredients production, there has been a want to discover the alternative substances to replace the components together with cement and coarse combination. This study has an interest to investigate the utilisation of lightweight aggregate in M₃₀ grade self-compacting concrete (SCC) containing lime. Initially in SCC, cement was replaced with lime by 5, 10, 15, 20, 25, 30, 35, 40 and 45% and optimised the replacement based on the mechanical properties. The coarse aggregate was replaced with a light weight steel slag (SS) aggregate at the percentage of 10, 20, 30 and 40% individually in the above optimised replacement of cement with lime. With each mix, to enhance the binding and mechanical properties, a constant percentage (5%) of epoxy resin (EPR) was added as additive. To enhance the workability and to found the optimum dosage, the superplasticiser conplast SP430 was added in distinctive chances of water cement ratio and the workability tests have been completed. And then mechanical properties and durability properties were compared with controlled SCC and their enhancement in properties were discussed.

摘要

为了克服由于混凝土生产及其配料生产而引起的环境问题，人们一直希望寻找替代物质来替代水泥和粗组合物等成分。本研究有兴趣调查轻骨料在 M _{30中的利用}含石灰的等级自密实混凝土 (SCC)。最初在 SCC 中，水泥被 5%、10%、15%、20%、25%、30%、35%、40% 和 45% 的石灰替代，并根据机械性能优化替代。在上述用石灰替代水泥的优化中，粗骨料被分别以 10%、20%、30% 和 40% 的百分比替换为轻质钢渣 (SS) 骨料。对于每种混合物，为了增强粘合性和机械性能，添加了恒定百分比 (5%) 的环氧树脂 (EPR) 作为添加剂。为了提高和易性并找到最佳用量，按照不同的水灰比加入减水剂conplast SP430，并完成了和易性试验。