Influence of Aggregate on the Mechanical, Permeability, and Durability Properties of Porous Concrete: A Review
Xianglong Li *
School of Architecture, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
Jinpeng Bai
Beijing Engineering Corporation Limited, Beijing 100024, China.
Guixiu Wang
School of Architecture, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
*Author to whom correspondence should be addressed.
Abstract
This study, based on a review of existing literature and experimental analysis, explores the impact of aggregates on the performance of porous concrete. It reveals that the strength and surface characteristics of natural aggregates significantly affect the mechanical properties of concrete, while recycled aggregates, although promoting resource recycling, perform poorly. A reduction in aggregate particle size is inversely proportional to an increase in concrete strength, with fine aggregates playing a pivotal role in refining the pore structure. The study also examines the trade-offs between strength and permeability, and the limitations of using recycled aggregates. By reasonably selecting the type of aggregate and optimizing the gradation, the mechanical and permeability properties of porous concrete can be significantly improved, providing an important reference for its application in practical engineering.
Keywords: Porous concrete, cementitious materials, performance impact