The effect of vermiculite and quartz in porous concrete on reducing storm-runoff pollution. Issue 2 (3rd April 2021)

• Record Type: Journal Article
• Authors: Azad, Armin; Mousavi, Sayed-Farhad; Karami, Hojat; Farzin, Saeed; Singh, Vijay P.
• Is Part Of: ISH journal of hydraulic engineering. Volume 27:Issue 2(2021)
• Page Start: 144
• Page End: 152
• Publication Date: 2021-04-03
• Subjects: Porous concrete -- vermiculite -- quartz -- urban storm-runoff -- contamination reduction; Hydraulic engineering -- Periodicals; Hydraulic engineering -- India -- Periodicals; Hydraulic engineering; India; Periodicals; 627
• DOI: 10.1080/09715010.2018.1528482
• Languages: English
• ISSNs: 0971-5010

Abstract

ABSTRACT: Urban storm-runoff is categorized as an accessible resource to be used in agriculture, industry, and groundwater recharge. One of the applications of porous concrete is to improve the quality of storm-runoff. The objective of present study was to investigate the effect of mixing vermiculite and quartz with porous concrete on reducing urban-runoff pollution. Different proportions of vermiculite and quartz (5–30%) were added to concrete and the effect of these additives on the ability of different mixtures to improve runoff quality was investigated. Results showed that both additives had a positive effect on the porous concrete to improve the quality of urban storm-runoff. With an increase of the additive ratio to 30%, the removal of total suspended solids (TSS), chemical oxygen demand (COD), and turbidity parameters increased from 45, 14, and 54% in the control treatment to 85, 43, and 76% in the vermiculite mixtures and 78, 45, and 84% in the quartz mixtures, respectively. None of the samples satisfactorily reduced electrical conductivity (EC) and sodium chloride (NaCl). These values for the best mixture were 6.7% and 7.8%, respectively. The study showed that permeability in the most impermeable quartz sample was good.