Karmakar et al., International Journal on Emerging Technologies 14(1): 52-58(2023) 52 International Journal on Emerging Technologies 14(1): 52-58(2023) ISSN No. (Print): 0975-8364 ISSN No. (Online): 2249-3255 Experimental Analysis on Engineering Properties of Pervious Concrete with GGBS as a Partial Replacement for Cement Debashish Karmakar 1* , Kaberi Majumdar 2 , Manish Pal 3 and Pankaj Kumar Roy 3 1 Assistant Professor, Department of Civil Engineering, NIT Agartala, India. 2 Associate Professor, Department of Electrical Engineering, Tripura Institute of Technology, Tripura, India. 3 Professor, Department of Civil Engineering, NIT Agartala, Tripura, India. 3 Professor, School of Water Resources Engineering, Jadavpur University, West Bengal, India. (Corresponding author: Debashish Karmakar*) (Received 08 March 2023, Revised 28 April 2023, Accepted 15 May 2023) (Published by Research Trend, Website: www.researchtrend.net) ABSTRACT: 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. Keywords: GGBS, Water cement ratio, Aggregate binder ratio, Strength, Permeability. Abbreviations: GGBS, Ground Granulated Blast-furnace Slag; M, Mix; MPa, Mega Pascal; CC, Cement Concrete. I. INTRODUCTION Water, port land cement, and coarse aggregate are the components of permeable concrete. The pervious concrete is considered as a pavement because of having environmental friendly aspects like hydrological and mechanical properties [4, 10, 14]. The use of pervious concrete had been restricted to the construction of footpaths, walkways, parking lots etc. But gradually this concept has been implemented in the carriageway construction. The challenge faced in this concept is to sustain against the moving traffic load. Since pervious concrete is an open-graded pavement, it can allow water to percolate through it easily, but it must desperately withstand the traffic load. The lack of fine particles in the mix sets it apart from regular concrete. The aggregate is typically one size, and the point of contact is where a cement and water paste is used to bind the material together [8]. To make a paste, a specific amount of water and cementitious materials are combined. When mixed and applied, the paste creates a thick layer over the aggregate particles to prevent it from leaking off. Pervious concrete creates a harsh mix that is challenging to mix and put because it lacks fine aggregate [7]. As a result, the concrete has a significant number of interconnecting voids. Water may swiftly percolate through concrete when it is appropriately constructed [13, 15, 23]. Contrary to pervious concrete, which has a void ratio that can range from 15 to 40 percent, ordinary concrete has a void ratio of between 3 and 5 percent. Pervious concrete has a low weight (between 1600 and 2000 kg/m 3 ) because to its large void content [2-3]. Depending on the use, the void ratio of pervious concrete varies. A large degree of surface ravelling and honeycombing may be seen on the pervious concrete's surface. Many researches have been performed to improve the strength of pervious concrete layer. Aggregate having different size and shape have been used to improve the strength parameters of pervious concrete [6, 18]. To improve the strength and durability properties of pervious concrete different types of additives like polypropylene fibre, polyethylene fibres, fly ash have been used [19]. Over burnt brick aggregate also has been used as coarse aggregate to check the behaviour of pervious concrete [22]. Different mix designs have been done to check and compare the performance of pervious concrete in terms of hydrological and strength properties [16, 17, 21]. In earlier researches, it is observed that although pervious concrete is an open-graded pavement, if it has satisfactory bonding with the aggregates then it can resist traffic load as well as allow percolation of water. GGBS is a material which is having cementitious property to have good bonding in the mix [1]. In order to produce ground- granulated blast furnace slag, iron slag is quenched from the source of blast furnace molten in aqueous media to e t