Fly ash amended pervious concrete: a laboratory study on removal potential for inorganic contaminants

Abstract

Pervious concrete is a recognised best management practice. This study investigated the removal efficiencies of various pervious concrete formulations when exposed to total suspended solids, Pb , and total suspended solids, respectively. Removal efficiencies of total suspended solids, Cl -, SO 4 2-, and NO 3 -were not largely influenced by formulation. However, both Pb 2+ and PO 4 3-removal were formulation dependent. Analysis of the void space in each individual pervious concrete cylinder was performed and compared to removal efficiency data. Surprisingly, no significant relationship existed between removal of potential contaminants and void space. Pervious concrete can aid in improving water quality of urban runoff.

Pervious concrete with secondarily recycled low-quality brick-concrete demolition residue: Engineering performances, multi-scale/phase structure and sustainability

“…Thus, focuses are put on the non-structural applications of CDW with relatively low criteria of mechanical and durability properties, e.g., pervious concrete . Compared with traditional solid concrete with limited porosity, pervious concrete with relatively high connected porosity (15-35%) (Deo and Neithalath, 2010;Putman and Neptune, 2011;Yang and Jiang, 2003) possesses many environmental benefits, such as controlling rainwater runoff, restoring groundwater supply, improving water quality, and reducing soil pollution (Otter et al, 2016;Park et al, 2014). As an environmentally friendly paving material, pervious concrete has been increasingly used in the development of low-capacity pavements such as sidewalks, parking lots, and alleys (Chandrappa and Biligiri, 2016).…”