Porous Concrete has been developed as an emerging technology, since this is environmentally and hydrologically sustainable. The use of porous concrete is limited to parking lots, walkways, footpaths etc. But to use porous concrete on the road for vehicular movement is a challenge for any researcher. The current approach is to use porous concrete on the low volume road by improving the engineering properties. Using a variety of design criteria, this study prepares a number of test samples before examining the characteristics like strength and permeability of porous concrete mixes. Regarding characteristics such as flexural strength, permeability, compressive strength, tensile strength, and porosity the effects of cement-water ratio, aggregate gradation, and fine aggregate’s percentage are estimated. Different samples of pervious concrete mixtures have been produced and experimentally tested employing aggregate sizes 20-16 mm, 16-12.5 mm, and 12.5-4.75 mm. In the study water-cement ratio is considered as 0.30 and 0.32. The presence of GGBS in the permeable concrete was evaluated using a systematic investigation through the compressive strength and permeability property. In this experimental initiative, it is suggested that GGBS may be utilized to partially replace cement. The percentages of replacement were considered as 25 percent, 30 percent, 35 percent and 40 percent. The combination started to lose its stability once we reached the maximum level of 40%. The split tensile strength, flexural strengths and, compressive strength were all improved with a 40% substitution. The GGBS has been raised, yet it has decreased permeability. The current study has improved the structural and hydrological properties of porous concrete by adding GGBS at some selected percentage, and this improved mix may be used for the preparation of porous concrete layer for low-volume roads construction.

GGBS, Water cement ratio, Aggregate binder ratio, Strength, Permeability

In this study, GGBS is added with the mixes at different percentages as cement replacement partially. Fine particles are also added to the mix. Mixes have been casted with two types of water-cement ratios viz 0.30 and 0.32. Various examinations, including flexural strength, compressive strength, permeability and split tensile strength, tests have been carried out on the mix samples. From the test results, it is observed that with strengths like compressive strength and split tensile strength, the maximum value is obtained when 40% cement of the mix is replaced by GGBS and 5% fine aggregates are added at w/c ratio of 0.30. It has been also noticed that the maximum value for flexural strength is found for the mix having 35% cement replacement and 5% fines at water-cement ratio of 0.32 after 28 days curing. In terms of permeability, mix having 0% fines with 25% cement replacement at water-cement ratio of 0.30 shows maximum value. So it may be concluded from the observations that the addition of GGBS in more percentage along with fine aggregates improves the mix in terms of different strength parameters, but permeability and porosity properties are decreased at the same time. So, based on the previous and current research, it may be stated that GGBS is one of the alternatives to use in pervious concrete mix as cementitious material, and it can improve the strength and hydrological property of the mix.

Debashish Karmakar, Kaberi Majumdar, Manish Pal and Pankaj Kumar Roy (2023). Experimental Analysis on Engineering Properties of Pervious Concrete with GGBS as a Partial Replacement for Cement. International Journal on Emerging Technologies, 14(1): 52–58.