Influence of Engineering Properties of Machine-Made Sand on Concrete Performance: A Review

Abstract

As the demand for high-quality concrete in the construction industry increases, mechanically produced sand, which is a substitute for natural sand, has received widespread attention due to its abundant resources and environmental friendliness. This review aims to explore the engineering properties (such as particle shape, gradation, and fines content) of manufactured sand and their impact on concrete performance, emphasizing its important role in promoting green construction and sustainable development. By systematically reviewing recent relevant studies, this paper determines the optimal range of fines content and discusses the impact of different particle shapes on workability and strength, highlighting the critical role of reasonable gradation and parent rock properties. The study shows that the application of manufactured sand can significantly improve the mechanical and durability properties of concrete, reduce dependence on natural resources, and reduce carbon emissions. To further promote research and technological progress in this field, it is suggested that future studies should explore the long-term durability of manufactured sand, develop more efficient sand production technologies, and optimize the mix design to achieve more environmentally friendly and economical construction solutions.