Student Name: ANJITH B MOHAN
Guide Name: Smt Divya Chandran, Assistant Professor, CE
Project Area: WASTE MANAGEMENT
Year: 2018 , Duration: 1
Installation of impervious roads prevents ground water
percolation and causes flood related problems. In big picture, it can even cause unbalance
in natural ecosystem. The advantages of concrete block pavement(CPB) over other
paving surfaces are low maintenance, ease of placement and removal, reusable blocks,
aesthetics appeal, and immediate usage after installation or repair. So its drawbacks like
failure due to excessive wear and variability in the strength of block can be counteracted
to some extent. It is best suited for low volume rural roads where the average daily traffic
was to be about 250-300 vehicles/day, pedestrian walks, junctions etc. During recent
times in Kerala, departments like LSGD, PWD etc. focus more on Interlock concrete
block pavement (ICBP) technology for laying rural pavements.
In permeable pavement technology, a range of sustainable
material and techniques are used with bottom base and sub base layers that all allows
water to drip through it into the soil. The difference between permeable concrete block
pavers(PCBP) and conventional CBPs are its enlarged joints filled with permeable fine
aggregates instead of sand and also with subsequent bottom infiltrating layers with
reduced fines. This pavement was designed for a dual role. It acts as an in in-situ
infiltrating and drainage system. Also many pollutants are substantially removed and
treated within the paving layers before the water leaves the pavement. The main highlight
of this study is the feasibility of potential replacement of plastic waste for concrete
constituents in PCBP that provides environmental as well as economic benefits.
As per the circular No.885/EGSC/16/REGS of MGNREGS
Kerala for the year 2017, one of the seven focal area in Kerala is construction of cement
interlock block roads. In Ambalappuzha block, Alappuzha, trained MGNREGA (a wage
employment guarantee programme) workers are already engaged in moulding the
concrete blocks in conformity with relevant standards and laying the same in roads,
courtyard etc.
In this project, merits of the plastic incorporated permeable
CBP over conventional impermeable roads in rural areas was analyzed through literature
survey and direct and indirect cost and benefit analysis of this eco-friendly technology
was also done through estimation. Also feasibility of reuse of waste plastics in shredded
form by simple mixing instead of burning/melting in the construction of cement paver
block was analyzed. As part of project plan, different aspects of laying of such paving
blocks on rural roads in convergence of MGNREGA was also examined.
Also strength parameters of plastic incorporate porous concrete
blocks which consisting of cement, coarse aggregate, without or with very less fine
aggregate and water is also included as an alternative feasible option in this study.
Keywords: CBP; Low volume rural roads; Permeable pavement; MGNREGS; Reuse of
plastic;
