Assessment of the physical characteristics and stormwater effluent quality of permeable pavement systems containing recycled materials

This paper evaluates the physical characteristics of two recycled materials and the pollutant removal efficiencies of four 0.2 m2 tanked permeable pavement rigs in the laboratory, that contained either natural aggregates or these recycled materials in the sub-base. The selected recycled materials were Crushed Concrete Aggregates (CCA) and Cement-bounded Expanded Polystyrene beads (C-EPS) whilst the natural aggregates were basalt and quartzite. Natural stormwater runoff was used as influent. Effluent was collected for analysis after 7–10 mins of discharge. Influent and effluent were analysed for pH, Chemical Oxygen Demand (COD), Dissolved Oxygen (DO), Electroconductivity (EC), turbidity, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Nitrate-Nitrogen (NO3-N), reactive phosphorous (PO43-) and sulphates (SO42-). Both CCA and C-EPS had suitable physical properties for use as sub-base materials in PPS. However, C-EPS is recommended for use in pavements with light to no traffic because of its relatively low compressive strength. In terms of pollutant removal efficiencies, significant differences (p 0.05) were found with respect to TSS, turbidity, COD and NO3-N. Effluent from rigs containing CCA and C-EPS saw significant increases in pH, EC and TDS measurements whilst improvements in DO, TSS, turbidity, COD, PO43- and SO42- were observed. All mean values except pH were, however, within the Maximum Permissible Levels (MPLs) of water pollutants discharged into the environment according to the Trinidad and Tobago Environmental Management Authority (EMA) or the United States Environmental Protection Agency (US EPA). In this regard, the CCA and C-EPS performed satisfactorily as sub-base materials in the permeable pavement rigs. It is noted, however, that further analysis is recommended through leaching tests on the recycled materials

Permeable pavements Guide to the design construction and maintenance of concrete block permeable pavements

Includes bibliographical referencesAvailable from British Library Document Supply Centre- DSC:m03/35486 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Code of practice for laying precast concrete block pavements

SIGLELD:f83/1263 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

The structural design of heavy duty pavements for ports and other industries

SIGLEAvailable from British Library Document Supply Centre-DSC:q96/20561 / BLDSC - British Library Document Supply Centre3. edGBUnited Kingdo

Drainage benefits of porous, permeable and pervious paving

The fundamental purpose of all permeable paving systems (PPSs) is to allow stormwater to infiltrate slowly, to be stored in its structure and then allowed to be conveyed elsewhere in association with the sustainable drainage system (SUDS). This chapter focuses on design, maintenance and water quality control aspects, as well as advantages and disadvantages of different PPSs, with the help of recent and relevant case studies. The latest innovations in tackling global climate change (GCC) are discussed, as is current research regarding the combination of PPS, geothermal heating and cooling, water treatment and recycling. Possible water quality variables of concern have the potential to endanger soil and groundwater resources if they are not sufficiently treated by biodegradation or removal during the infiltration process and include sediment and suspended solids, phosphorus, organic waste with high biochemical oxygen demand, dissolved nutrients and pollutants, oil and grease, and faecal pathogens