Abstract:
Pervious concrete is a relatively new concept. This concrete can be used for the rural road
pavement, with relatively less traffic. As the concrete allows the water to pass through it,
this would greatly help in recharging the ground water level. This has multifaceted benefits,
including that for agriculture.
Pervious concrete can be introduced in rural areas as a road pavement material. Pervious
concrete as a paving material has seen renewed interest due to its ability to allow water to
flow through itself to recharge groundwater level and minimize storm water runoff. In rural
areas, cost consideration is the primary factor which must be kept in mind. In rural areas,
storm water management practice is costly. Pervious concrete pavement is unique and
effective means to meet growing environmental demands.
In cities also, the pervious concrete pavements can be used for parking areas, garden, etc.
It can be advantageously used as a replacement for the paver blocks. By capturing rainwater
and allowing it to seep into the ground, this pavement technology creates more efficient
land use by eliminating the need for retention ponds, well and other costly storm water
management devices. However, the need for pervious concrete is of low grade, as there will
not be heavy loads in parking area, garden, etc.
In this project work, an attempt has been made to develop a low grade pervious concrete in
the laboratory. The conventional concrete making materials are used for the same. However,
the fine aggregates (sand) are not used. Only 10 mm coarse aggregates & 20 mm coarse
aggregates are used. The proportion of concrete is 1 cement: 4 aggregates. Due to absence
of fine aggregates, the concrete becomes porous in nature. This, in turn, allows the water to
pass through it. The strength tests, workability tests & permeability tests are done on
concrete to assess its properties & its suitability for the intended purpose.
