Sustainability Assessment of Using Recycled Aggregates in Concrete Block Pavements

Md Mizanur Rahman, Simon Beecham, Asif Iqbal, Md Rajibul Karim and Abu Taher Zillur Rabbi
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Md Mizanur Rahman: Geotechnical Engineering, University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia
Simon Beecham: Geotechnical Engineering, University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia
Asif Iqbal: Geotechnical Engineering, University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia
Md Rajibul Karim: Geotechnical Engineering, University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia
Abu Taher Zillur Rabbi: Geotechnical Engineering, University of South Australia, UniSA STEM, Mawson Lakes, SA 5095, Australia

Sustainability, 2020, vol. 12, issue 10, 1-17

Abstract: The mechanistic design of a concrete block pavement (CBP) can be very complicated and often requires the use of computer programs. This paper presents a new mechanistic-empirical method, which is implemented in a computer program (DesignPave) that calculates base course/sub-base thicknesses for a range of design inputs such as traffic load, interlocking properties, and material stiffness. A range of virgin and recycled unbound granular materials were also experimentally tested to characterize them for possible use as base course or sub-base materials. Combining the new mechanistic-empirical method and the range of base course/sub-base course materials (virgin and recycled aggregates), it was found that while a CBP containing recycled aggregates did not offer a significant direct financial benefit based on the characteristics or material costs, the associated environmental benefits were very high.

Keywords: concrete block pavements; mechanistic design; recycled aggregates; eco-efficiency (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:12:y:2020:i:10:p:4313-:d:362597

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