Porous concrete technology has been used since 1970s in various parts of the United States
as an option in complex drainage systems and water retention areas. Porous concrete pavements have
become popular as an effective stormwater management device to control stormwater runoff in
pavement. Porous concrete pavement is being used as one of the solutions to decrease the stormwater
runoff by capturing and allowing rainwater to drain into the land surface. The main problem of porous
concrete pavement is its strength. The objective of this paper is to review the use and performance of
nano silica in porous concrete pavement and previous laboratory study on porous concrete pavement.
From the literature review, it was found that the conventional porous concrete pavement does not have
good strength for pavement purpose. An addition of nano-material will improve the physical and
chemical properties of porous concrete pavement. To improve the strength of the porous concrete,
various additives have been studied as a part of porous concrete mix and yet, the optimum condition to
produce good porous concrete has still not been established. From the previous study, it was found that
in preparing the porous concrete laboratory specimen, the use of standard Proctor hammer (2.5 kg)
and pneumatic press (70 kPa compaction effort) resulted in the closest properties to the field porous
concrete.