Development of vegetation pervious concrete

Abstract

This study investigates the development of vegetation-supporting pervious concrete panels using recycled concrete aggregates (RCA) as a sustainable solution for slope protection and concrete waste management. This research explores the use of RCA and virgin aggregates to produce pervious concrete capable of managing surface water while supporting plant growth. Laboratory tests were conducted to assess the physical and mechanical properties of the materials, leading to a mix design developed using a non-compacted casting process. The resulting concrete demonstrated an average compressive strength of 3.25 MPa, flexural strength of 1.064 MPa, porosity of 40%, and a permeability coefficient of 68.599 mm/s after 28 days. Fly ash was incorporated to reduce the alkalinity of the cement paste, improving compatibility with plant life. Although the alkalinity initially decreased, pH levels remained was not favorable for plant growth and gradually increased over time due to cement hydration. A soil mix was integrated into the concrete to support vegetation further, and cymbopogon citratus and cymbopogon confertiflorus were identified as suitable plant species. The findings highlight that vegetation pervious concrete is an effective, eco-friendly solution that combines water management and ecological restoration, offering a value- added use for recycled concrete in sustainable construction