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Abstract

To investigate the influence of key parameters such as the void content and water ash ratio on the performance of pervious concrete, this paper employed compressive strength, flexural strength, and flowability tests to analyze the effect of changes in the void content, water ash ratio, water-reducing agent, and curing age on the working and mechanical properties of pervious concrete. The experimental results show that the flowability index can evaluate the working properties of pervious concrete. With the rising content of the water-reducing agent, the flowability index increases, while the amount of the water-reducing agent utilized to achieve the same flowability also relatively decreases with the increasing water ash ratio. It is recommended to control the flowability at 240-250 mm. Meanwhile, as the water ash ratio increases, the compressive strength and flexural strength present a decreasing trend. With the rising void content, the compressive strength and flexural strength also significantly decrease, and the influence of void content changes on compressive strength and flexural strength is much higher than that of changes in the water ash ratio. With the increasing curing age, the compressive strength and flexural strength values show a significant increasing trend. With the increasing flowability, both compressive strength and flexural strength present an increasing trend, with the significantly growing flexural strength value.

Publication Date

11-8-2022

DOI

10.14048/j.issn.1671-2579.2022.05.042

First Page

232

Last Page

236

Submission Date

April 2025

Reference

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