Concrete is one of the main structural materials used in the world; hence, improvement of the concrete mix design with respect to variable issues and requirements is of great importance. Moreover, environmental issues and waste materials have become major concerns these days. In this study, to move towards a more sustainable and eco-friendly construction industry, recycled waste glasses were used as partial replacement for sand and gravel aggregates in concrete. Simultaneously, the effects of silica fume as cement replacement and property enhancer in the eco-friendly concrete mix were investigated. The results of the conducted experiments indicated that utilisation of glass aggregates in general results in strength reduction. However, at proportions of 40% glass replacing aggregates and 5% microsilica replacing cement, no strength reduction was observed compared with normal concrete. An increase in the substitution of natural aggregates with glass reduced the total water absorption: at a proportion of 60% aggregate replaced by glass, the water absorption was reduced by 74%. On the other hand, with the replacement of 10% of cement with microsilica, water absorption decreased up to 17%. The results also indicated that an increase in the dosage of glass to 60% decreased the volume of permeable pore space by 70%.

中文翻译：

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利用废玻璃的环保混凝土的实验研究

混凝土是世界上使用的主要结构材料之一。因此，就各种问题和要求改进混凝土配合料设计非常重要。此外，近来环境问题和废料已成为主要问题。在这项研究中，为了朝着更可持续，更环保的建筑行业发展，回收的废玻璃被部分替代了混凝土中的沙子和砾石集料。同时，研究了硅粉在生态混凝土拌合料中作为水泥替代品和性能增强剂的作用。进行的实验结果表明，利用玻璃聚集体通常会导致强度降低。但是，以40％的玻璃代替骨料和5％的微二氧化硅代替水泥的比例，与普通混凝土相比，没有观察到强度降低。用玻璃代替天然骨料的增加减少了总吸水率：以60％的骨料代替玻璃时，吸水率降低了74％。另一方面，用微硅粉代替10％的水泥后，吸水率降低了17％。结果还表明，玻璃剂量增加到60％时，可渗透孔空间的体积减少了70％。