Performance Testing and Evaluation of Double-Layer Pervious Concrete Based on Recycled Aggregates
Wencan Jiao, Zhengyang Peng, Bin Ma, Chunyu Dai, Bin Gong, Zhen Huang
TL;DR
This paper explores using recycled aggregates in double-layer pervious concrete to improve slope protection while balancing strength and water permeability.
Contribution
The study introduces a double-layer pervious concrete system using recycled aggregates that optimizes both mechanical and hydraulic performance.
Findings
A 45% recycled fine aggregate replacement ratio balances permeability and compressive strength in single-layer concrete.
A paste-to-coarse aggregate ratio of 0.45 in double-layer concrete achieves optimal compressive strength and permeability.
The double-layer system improves water retention and infiltration control for ecological slope protection.
Abstract
A double-layer pervious concrete composite structure incorporating recycled fine aggregates derived from construction waste was developed to advance ecological slope protection performance. Single-factor experimental investigations on single-layer pervious concrete examined the effects of recycled fine aggregate replacement ratios (0–60%) and water–cement ratios (0.27–0.39) on material properties. The experimental results established 0.36 as the optimal water–cement ratio, while a 45% replacement ratio achieved an effective balance between permeability and compressive strength. Subsequently, parametric studies on double-layer composite concrete evaluated paste-to-coarse aggregate ratios ranging from 0.3 to 0.55. A paste-to-coarse aggregate ratio of 0.45 yielded optimal compressive strength while preserving favorable permeability characteristics, thereby achieving an effective balance…
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Taxonomy
TopicsUrban Stormwater Management Solutions · Geotechnical Engineering and Soil Stabilization · Constructed Wetlands for Wastewater Treatment