Optimization of porous pavement mixtures based on aggregate structure.

摘要

orous pavements are sustainable features that are used to help manage the quantity and quality of stormwater runoff. These pavements may include porous asphalt, permeable interlocking concrete pavers and pervious concrete. Since pavements that are purposefully designed to drain water through their matrix are relatively new, contractors and engineers are faced with various challenges such as improper design and installation, poor workability, and excessive finishing which may lead to clogged pores. Therefore, this study on porous pavements examined pervious concrete mixtures to evaluate an optimization process for the preparation of porous pavement mixtures based on aggregate structure to meet desired performance criteria. Pervious concrete mixtures typically consist of aggregate, cement, water, little to no fines and admixtures. Since aggregate makes up a large portion of the pervious concrete mix, aggregate properties and proportioning were the main focus of this study. Two aggregate sources (L and C) were used in the preparation of pervious concrete mixtures. From these sources, three single-sized aggregate fractions were used in making blends, the