The increasing demand for concrete for various infrastructure construction has led to significant production and usage of Portland cement which is the main binder used for concrete. The production of Portland cement poses a sustainability threat as its production emits a large amount of carbon dioxide into the environment coupled with the high consumption of natural resources. Therefore, the use of alternative materials will result in a significant reduction in these carbon emissions and deformation of the environment. On the other hand, the increasing population coupled with urbanization has led to the generation of several tonnes of solid wastes annually from various processes. Some of these wastes generated can be recycled and used as partial replacement of Portland cement in concrete mixtures. In order to improve the sustainability of concrete mixtures, this study was undertaken to evaluate the performance of concrete mixture incorporating recycled products as partial replacement of Portland cement. Corn cob ash and glass powder which are waste products from the agricultural and manufacturing industry respectively were used as binary cementitious material (BCM) to replace Portland cement up to 20% in concrete production. The effects of the BCM on the slump and mechanical properties were evaluated. Results from this study showed that the incorporation of BCM resulted in a decrease in the slump of the concrete mixtures. In terms of mechanical properties, 10% BCM was deemed the optimum due to the enhancement of the compressive and split tensile strength. Sustainability analysis of the mixtures also indicates BCM can be used to reduce the embodied energy and carbon of concrete mixtures.

各种基础设施建设对混凝土的需求不断增长，导致大量生产和使用硅酸盐水泥，硅酸盐水泥是用于混凝土的主要粘结剂。波特兰水泥的生产构成了可持续性威胁，因为其生产将大量二氧化碳排放到环境中，同时消耗大量自然资源。因此，使用替代材料将显着减少这些碳排放量和环境变形。另一方面，人口的增加以及城市化导致每年通过各种过程产生几吨的固体废物。这些产生的废物中的一些可以回收利用，并用作混凝土混合物中硅酸盐水泥的部分替代品。为了提高混凝土混合物的可持续性，本研究旨在评估掺入再生产品作为部分替代硅酸盐水泥的混凝土混合物的性能。分别来自农业和制造业的废料玉米芯灰和玻璃粉被用作二元胶凝材料（BCM），以代替混凝土生产中高达20％的硅酸盐水泥。评估了BCM对坍落度和机械性能的影响。这项研究的结果表明，掺入BCM可以降低混凝土混合物的坍落度。在机械性能方面，由于提高了抗压强度和抗拉强度，因此认为10％BCM是最佳的。