Pervious Geopolymer Concrete Research Articles

Metallurgical slag wastes into pervious geopolymer concrete stabilized with CO2 capture

The sustainable development agenda in the construction industry requires the development of green materials. In contrast to ordinary Portland cement (OPC), geopolymer concrete (GPC) is considered an eco-friendly construction material since it consumes less energy for production and uses industrial by-products as raw materials. Pervious concrete, a special type of concrete made of binder and coarse aggregate with a small content of fine aggregates, is also considered environmentally friendly because it protects trees on an impervious surface by providing air and water touching the roots of trees. The previous concrete (PC) can also be made of alternative aggregates such as recycled concrete aggregate and steelmaking by-products. Therefore, this research developed pervious geopolymer concrete (PGC) using ground granulate blast furnace slag (GGBFS) as a binder and gap-graded basic oxygen furnace (BOF) slag aggregate of coarse and medium size with the addition of fine aggregate under the controlled water-to-binder and AAS/binder ratio. The properties of PGC were evaluated in terms of compressive strength, splitting tensile strength, and permeability. Mix design and testing variables include an aggregate combination of BOF slag aggregate and granite and CO2 curing time. Test results indicate that the obtained PGC mixtures tend to have lower tensile and compressive strength than OPC. However, the water permeability of the mixtures is high. An increase in the CO2 curing time of PGC also tends to decrease the strength and increase the permeability of the PGC. Further research that carefully considers the chemistry of geopolymerization reaction is required to obtain the PGC with desired properties such as the increase in both tensile and compressive strengths.

Evaluation of pervious geopolymer concrete pavements performance for effective stormwater infiltration and water purification using Taguchi method

Atmospheric and industrial pollutants pose environmental concerns, especially when in contact with surface water, leading to contamination of the limited water supply. Pervious geopolymer concrete (PGC) is a promising approach to mitigate the above environmental concern due to its hydraulic permeation capabilities. Its porous nature helps absorb harmful pollutants and heavy metals in the water, thus purifying it for usage. The main objective of this paper is to evaluate the effect of different mix design parameters on the hydraulic performance of a PGC using the Taguchi method for effective water purification and stormwater infiltration. Accordingly, nine PGC mixtures were developed while accounting for four mix design factors at three distinct levels each. These factors included the binder dosage, dune sand inclusion, alkaline solution-to-binder ratio (S/B), and sodium hydroxide solution molarity. The precursor binding materials consisted of a 1:3 mix of fly ash (FA) and ground granulated blast furnace slag (GGBS). The optimum mixture having superior hydraulic performance was obtained by computing the signal-to-noise (S/N) ratio. The experimental test results revealed that the optimum permeability response of 12 mm/s was attained for PGC mix proportioned with 400 kg/m3, 0%, 0.55, and 8 M of binder dosage, dune sand inclusion, S/B, NH molarity, respectively. Experimental research findings serve to optimize the fabrication of PGC with enhanced hydraulic performance while minimizing the number of experiments. Such a construction material would allow for effective stormwater infiltration and resolve the challenge of stormwater runoff.

Optimization of Pervious Geopolymer Concrete Using TOPSIS-Based Taguchi Method

This paper evaluates the effect of mix design parameters on the mechanical, hydraulic, and durability properties of pervious geopolymer concrete (PGC) made with a 3:1 blend of granulated blast furnace slag (GBFS) and fly ash (FA). A total of nine PGC mixtures were designed using the Taguchi method, considering four factors, each at three levels, namely, the binder content, dune sand addition, alkaline-activator solution-to-binder ratio (AAS/B), and sodium hydroxide (SH) molarity. The quality criteria were the compressive strength, permeability, and abrasion resistance. The Taguchi and TOPSIS methods were adopted to determine the signal-to-noise (S/N) ratios and to optimize the mixture proportions for superior performance. The optimum mix for the scenarios with a compressive strength and abrasion resistance at the highest weights was composed of a binder content of 500 kg/m3, dune sand addition of 20%, AAS/B of 0.60, and SH molarity of 12 M. Meanwhile, the optimum mix for the permeability-dominant scenario included a 400 kg/m3 of binder content, 0% of dune sand addition, 0.60 of AAS/B, and 12 M of SH molarity. For a balanced performance scenario (i.e., equal weights for the responses), the optimum mix was similar to the permeability scenario with the exception of a 10% dune sand addition. An ANOVA showed that the binder content and dune sand addition had the highest contribution toward all the quality criteria. Multivariable regression models were established to predict the performance of the PGC using the mix design factors. Experimental research findings serve as a guide for optimizing the production of PGC with a superior performance while conducting minimal experiments.

Pervious geopolymer concrete as sustainable material for environmental application

Geopolymer binders are alternative construction materials to ordinary Portland cement (OPC), which is currently used for various applications. The process flexibility and the low carbon footprint of the geopolymer binders have led to the development of pervious geopolymer concrete. It helps to significantly reduce stormwater runoff, urban flooding and has the benefit of being less energy-intensive. Challenges of pervious concrete made up of ordinary Portland cement is the reduction in compressive strength while the void content increases. This research focuses on the development of geopolymer pervious concrete (GPC) to overcome the aforementioned challenge. Different geopolymeric compositions were mixed with aggregate of 10 mm and 20 mm and using different binder to aggregate ratios. Compressive strength and flexural strength of the developed fly-ash based geopolymer concrete were 39.9 MPa and 2.2 MPa, respectively, and the void content was maintained up to 37.7%, while density was 1988.14 Kg/m3.

Case study of the application of pervious fly ash geopolymer concrete for neutralization of acidic wastewater

Coal-fired power plants generate electricity and produce pollutants, including sulfur dioxide and nitrogen oxides in flue gases, as well as particulates, i.e., fly ash and bottom ash. In addition, the processes for removing toxic gases from flue gas and scale from boilers generate the acid wastewater, which requires treatment before release to the environment. Hence, there are many wastes generated from these power plants, and well managed waste treatment is required. Due to the alkalinity of geopolymer, therefore, this research proposes the use of fly ash for the production of pervious geopolymer concrete to neutralize the acidic wastewater. Its high surface area and porosity makes pervious geopolymer concrete suitable for use in wastewater infiltration and neutralization. Crushed limestone to fly ash mass ratios of 8, 10 and 12 were used in the mix design to produce the pore of pervious geopolymer concretes. Samples of 10-cm cube and 30 × 30 × 5 cm were fabricated, and the physical properties and acid neutralization were tested. A 0.001 M HCl solution was used to represent acidic wastewater, and batch and continuous processes of acid neutralization were compared. Results show that the density of the pervious geopolymer concrete increased with the increasing limestone content from 2.32 to 2.57 g/mL, with the percent voids of 20–30% and water flow rate through the concrete of 3.4–3.9 L/min. The compressive strength of the pervious geopolymer concrete was in the range 5.7–8.3 MPa, conforming to the requirement for pervious concrete as a permeable base and edge drain in pavement applications. With the alkaline properties of the geopolymer, neutralization of acidic wastewater from the operational processes of a power plant could be achieved. For the batch operation, concrete with a crushed limestone to fly ash mass ratio of 8 was most efficient, as it provided the highest volume of acid neutralization of 450 L. Sustainable production of pervious geopolymer concrete is proposed by using waste heat from the combustion process in a power plant.

Investigation into the permeability and strength of pervious geopolymer concrete containing coated biomass aggregate material

Waste palm oil products can be recycled in the production of pervious geopolymer concrete (PGC) for long-term sustainable development. PGC is a non-slip porous pavement concrete that allows water to pass through. Biomass aggregate (BA) is produced by burning palm oil biomass and is introduced as a replacement for natural aggregate (NA). BA is mixed with fly ash (FA) and alkaline liquid (AL) and heated in an oven at 80 °C for 24 h to produce coated biomass aggregate (CBA). PGC containing CBA is commonly used as a cement substitute in concrete. This study aims to develop and evaluate the effect of rainfall intensity on the ability of PGC to reduce stormwater runoff. Coating BA with geopolymer paste resulted in improved properties, better Aggregate crushing value (ACV), Aggregate impact value (AIV), water absorption and higher compressive strength compared with BA. Results indicated, a PGC with a FA/CBA ratio of 1:7, CBA of 5–10 mm, NaOH molarity of 10 M, Na2SiO3/NaOH ratio of 2.5, and AL/FA ratio of 0.5 when cured in an oven for 24 h at 80 °C, gave the optimum ratio for compressive strength of 13.7 MPa and water permeability of 2.1 cm/s. Both BA and CBA revealed a viable alternative aggregates for producing PGC and that the compressive strength of PGC made with CBA was 51% greater than cement pervious concrete containing NA. The results also showed that the reduction in runoff was due to the permeable concrete and decreased runoff with the increased rainfall intensity.

Development of Nomograph Chart for Pervious Concrete Containing Coated Biomass Aggregate

Pervious concrete is an effective and unique way to overcome critical environmental issues and support green, sustainable growth. Pervious concrete refers to a non-slip porous pavement concrete, which is permeable to water. Recently, the demand for sustainable waste palm oil products for construction in Malaysia has dramatically increased. For long-term sustainable development, palm products waste can be recycled in pervious concrete production. This study on pervious geopolymer concrete (hereafter PGC) explored an alternative binder and aggregate for Portland cement (OPC) and natural aggregate (NA), while it also developed a pervious concrete's compressive strength. Biomass aggregate (BA) was obtained by burning palm oil biomass. Thus, biomass aggregate (BA) is introduced as a replacement for natural aggregate (NA). In order to generate coated biomass aggregates (CBA), BA was combined with alkaline liquid (AL) and fly ash (FA) and then heated inside an oven at 80 degrees Celsius for 24 hours. PGC containing coated biomass aggregate is the most commonly used cement substitute in concrete as the industrial by-product waste. This study investigated the performance and optimised mixture design of various PGC mixtures that incorporated NA to replace BA CBA compared with OPC pervious concrete containing NA. PGC generated via CBA possessed greater compressive strength without any impact on permeability to water. Outcomes show that both CBA and BA are possible alternative aggregates for generating PGCs. As a result of this study, a nomograph chart was developed, which provided a guideline for designing PGC made by CBA and BA, and cement pervious concrete made with NA.

Effect of Ordinary Portland Cement on Some Properties of Pervious Geopolymer Concrete

In this research, a study is made on the Pervious Geopolymer Concrete (PGC), which is based on localmaterial(Metakaolin). The inclusion of Ordinary Portland Cement (OPC) as a partial substitute for Metakaolin (MK) for the production of (PGCs) has also been investigated. Pervious Geopolymer concrete was outputted from the local Metakaolin (MK), and ordinary Portland cement (OPC) as a partial substitute by weight of MK and silicate of sodium (Na2SiO3) and hydroxide of sodium (NaOH) solution. All PGC samples were cured after 24 hours from casting for five hours at a degree of the temperature of 50 ° C, then the testingafter 28 days. The compressive-strength, total content of voids, the strength of bending, dry-density, and thermal-conductivity of pervious Geopolymer concrete were examined. The mechanicalresults of testing ranged from (11.03 and 2.25) to (14.3 and 2.75) MPa for compressive-strength and flexural strength respectively.

Pervious Geopolymer Concrete under Ambient Curing

The synthesis of cement concrete involves degradation to environment through land and air pollution through the liberation of harmful greenhouse gasses. This laid the evolution and development of geopolymer concrete. On the other hand there are problems caused due to the impervious concrete surfaces that restrict the passage of water to the ground. In this research, works have been focused to develop pervious geopolymer concrete using Ground Granulated Blast Furnace Slag (GGBFS) as the source material. Combination of NaOH and Na2SiO3 solution was used as the alkaline solution. Usage of fine aggregate was eliminated and different proportions of GGBFS were tried to synthesis pervious geopolymer concrete of M 30 grade. Properties such as workability, compressive, permeability, tensile and flexural strength were determined. This research reveals the scope for the development of sustainable pervious concrete material.

Utilization of PET bottles and plastic granules in geopolymer concrete

Abstract This research work investigates the utilization of plastic wastes in the form of Polyethylene terephthalate (PET) bottles. PET bottles are used as a whole bottles inside geopolymer concrete specimen in proportions such as 3, 6 and 12. PET bottles are shredded and crushed to fine powder and are used as a partial replacement of M-sand in proportions such as 5, 10 and 15 percent. The novelty of this work lies in the utilization of PET bottles in geopolymer concrete. In this research, works have been focused to develop pervious geopolymer concrete using Ground Granulated Blast Furnace Slag as the base material. Combination of sodium hydroxide and sodium silicate solution was used as the alkaline activator solution. Properties such as workability, compressive strength, tensile strength and water absorption are determined in this work. Also effort has been made to analyze the behavior of specimen embedded with plastic at elevated temperatures such as 200, 400, 600 and 800 °C. This research unleashes the scope of utilization of waste plastics inside sustainable geopolymer concrete.

Experimental studies on pervious geopolymer concrete

The aim of the investigation is to assess the features of the utilization of a geo polymer binder for producing permeable geopolymer concrete. Materials used for producing pervious geopolymer concrete are fly ash, ground granulated blast furnace slag with the proportion of 60:40, sodium silicate solution, sodium hydroxide and coarse aggregate. The strength, functional characteristics and its relationship of the geo polymer pervious concrete were investigated. Compressive strength of geo polymer permeable concrete has enhanced along with the rise in density of Pervious geo polymer concrete. Permeability and voids exhibit a decreasing pattern with the increase in molarity and alkali binder ratio. Based on the strength attainment in the previous geo polymer concrete, it has used as a sub - base and base course of a flexible pavement layers.

Sustainable metakaolin based pervious geopolymer concrete with recycled concrete aggregate

Production of Portland cement causes many environmental problems. Whereby, about seven percent by the gross weight of CO2 emissions resulted from cement production factories. Therefore, the usage of geopolymer binder, to produce pervious concrete, instead of Portland cement considers the one solution towards conserving the environment by reducing emission of carbon dioxide. In this paper, we investigate the production of local metakaolin (MK) as a geopolymer binder to produce Pervious Geopolymer Concretes (PGC). Also, the inclusion of recycled construction materials wastes as aggregates (RA) for production of (PGCs) was studied. PGC was produced from local metakaolin (MK), sodium hydroxide (NaOH) solution, sodium silicate (Na2SiO3) solution, and recycled concrete (RC) as a volumetric partial replacement from the natural coarse aggregate (NA). All PGC specimens cured at a temperature of 50°C for five hours after 24 hours from casting and tested after 28 days. Compressive strength, total void content, splitting tensile strength, flexural strength, dry density and coefficient of water permeability for the PGCs were investigated. The results of mechanical properties were ranged from (12.23, 1.81 and 2.5) to (9.86, 1.3 and 1.95) MPa for compressive, splitting tensile and flexural strengths, respectively. The results articulate that the recycled concrete (RC) can be used as recycled coarse aggregates with a partial replacement for producing PGC with acceptable properties.

Geogrid-confined pervious geopolymer concrete piles with FRP-PVC-confined concrete core: Analytical models

The geogrid-confined pervious geopolymer concrete pile (GPGCP) with fibre reinforced polymer (FRP)-polyvinyl chloride (PVC)-confined concrete core (FPCC) is a new form of composite piles proposed in a previous study, which consists of a circular geogrid outer tube, a FPCC, and pervious geopolymer concrete (PGC) filled in between. For FPCC, the normal geopolymer concrete (NGC) was used to fill the FRP-PVC tubes. In this study, new analytical models are proposed to simulate the axial compressive behaviour of GPGCPs without and with FPCC. According to the characteristics of the mechanical behaviour of GPGCPs, analytical models are proposed which can predict the large axial strain behaviour. The unconfined concrete model proposed by the European Standards, and an existing popular FRP-confined concrete model are combined here. It was found that the analytical results are in good agreement with the experimental results. Based on the analytical models, the influences of different parameters on the axial compressive behaviour of GPGCPs have been investigated through parametric analyses.

Pervious low-calcium fly ash geopolymer concrete using gap-graded limestone coarse aggregates in ambient curing

This paper describes the research of pervious geopolymer concrete using limestone from Timor Island in Indonesia as coarse aggregate. No sand was used to make this pervious geopolymer concrete. Two types of crushed limestone aggregates used were coral limestone (organic limestone) and limestone (calcilutite). Abrasion losses of the aggregates using Los Angeles Machine test were 18.9% for limestone (calcilutite) and 34.98% for coral limestone. Those aggregates had many characteristics such as 10-20 mm of diameter length, angular shapes and apparent specific density 2.74-2.75. The mass ratios of aggregate to geopolymer paste were varied from 2.86 to 6.91. To make the geopolymer paste, it was used Class F or Low-Calcium Fly Ash from Bolok-Kupang Coal Fired Power Plant as a rich silica-alumina of precursor material. Meanwhile, the mass ratio of natrium silicate solution to natrium hydroxide solution 10 M was 1.0 and the mass ratio of fly ash to alkaline solution was 2.0. Ambient curing was applied to all specimens. Mechanical characteristics obtained at the age of 28 days of hardened pervious geopolymer concrete were: (1) compression strength, (2) splitting tensile strength, and (3) abrasion losses using Los Angeles Machine Test. Besides, density of hardened specimens were also obtained. In addition, the comparisons of mechanical properties of pervious geopolymer concretes using coral limestone and limestone (calcilutite) as coarse aggregate were also conducted. According to the results of this research, it is feasible to make pervious geopolymer concrete using Timor limestone as coarse aggregate due to its mechanical characteristics.

Properties of Metakaolin Based Pervious Geopolymer Concrete

Utilizing Geopolymer binder instead of Portland cement in pervious concrete or ordinary concrete is the one solution toward reducing emission of carbon dioxide in the environment. Metakaolin (MK) used as a binding material to produce Pervious Geopolymer Concrete (PGC) in this investigation. Different PGC mixes were prepared and their, density, void content and compressive strength were tested. The effects of different proportions of alkaline liquid to metakaolin ratio AL/MK (0.5, 0.55 and 0.6); metakaolin to coarse aggregate MK:CA ratio (1:5, 1:6 and 1:7); superplasticizer dosages (0, 1, 2 and 3% by weight of MK); and the effect of using a fine aggregate at levels of 5 and 10% by weight of coarse aggregate were investigated. Sodium hydroxide (NaOH) having a concentration of 12 molarity with sodium silicate (Na2SiO3) to (NaOH) ratio of 2 are used as an alkaline activator to produce all PGC mixes. All PGC specimens cured at elevated temperature of 50°C for five hours after 24 hours of casting and tested after 7 days. The Results show that the optimum AL/MK ratio and superplasticizer dosage were 0.6 and 2% respectively. The compressive strength and oven-dry density were increased by about (19%, 20% and 32%) and (4.5%, 7.2% and 5.2%) for 1:5, 1:6 and 1:7 MK:CA ratio, respectively, while porosity was decreased up to 18% with the inclusion of 10% fine aggregate by weight of coarse aggregate.

Geogrid-confined pervious geopolymer concrete piles with FRP-PVC-confined concrete core: Concept and behaviour

Abstract The use of fibre reinforced polymer (FRP) and polyvinyl chloride (PVC) as strengthening materials for piles was found to be a promising scheme, due to their high strength-to-weight ratio, high durability and high anti-corrosion ability. This study presents an experimental investigation of a new form of composite piles: geogrid-confined pervious geopolymer concrete piles (GPGCPs) with fibre reinforced polymer (FRP)-polyvinyl chloride (PVC)-confined concrete core (FPCC). The GPGCP with FPCC consists of a circular geogrid outer tube, a FRP-PVC-confined normal geopolymer concrete core, and pervious geopolymer concrete (PGC) filled in between. The reason for applying PGC into piles is to increase the rate of consolidation. The aim of using FPCC is to improve the compressive strength and ductility of the concrete. In this study, two groups of GPGCPs (without and with FPCC) were prepared and tested under axial compression. In each group, one layer, two layers, and three layers of geogrid were used to investigate the influence of the outer tube. The test results show that the FPCC can significantly improve the mechanical behaviour of the GPGCPs. In comparison with GPGCPs without FPCC, the maximum axial loads of GPGCPs with FPCC were higher, and the ductility was improved significantly.

Development of Thai Lignite Fly Ash and Metakaolin for Pervious Geopolymer Concrete

The study was to use Thai lignite fly ash and metakaolin to produce geopolymer paste as binder material in pervious concrete. The proper ratio of fly ash to metakaolin were varied as 100:0, 70:30, and 50:50. Alkali solution to pozzolan (L/P) ratios viz., 0.5, 0.6 and 0.8 by weight were prepared. The mechanical and characterization of pervious geopolymer concrete (PGC) were carried out. The results presented that the particle of fly ash was sphere with smooth surface, while metakaolin was partly agglomerated and irregular shaped. The increase of fly ash in the ratio of fly ash to metakaolin affected the lower requirement of volume of alkali solution. The compressive strength and of pervious geopolymer concrete at 28 days were 3.74-5.41. The void ratio and water permeability were 28.54-30.74% and 1.90-2.09 cm/sec, respectively. Therefore, geopolymer paste from fly ash and metakaolin could be used for pervious concrete with satisfied properties. However, the price of pervious cement concrete is 1,898-2,168 THB/m3, while the price of pervious geopolymer concrete is 2,123-4,173 THB/m3 due to the energy cost to transform kaolin into metakaolin by an electric furnace. The cost can be reduced by increasing the ratio of fly ash to metakaolin.

PROPERTIES OF COATED AND UNCOATED BIOMASS AGGREGATES AND THEIR EFFECTS ON THE STRENGTH AND WATER PERMEABILITY OF PERVIOUS GEOPOLYMER CONCRETE

Biomass aggregate (BA) is a by-product of biomass industries which is less dense and more porousthan natural aggregate. In this two-part study, BA was mixed with fly ash and alkaline liquid, and heated in anoven at 80 °C for 24 h to produce coated biomass aggregate (CBA). The first part of this study was focused onthe density, specific gravity, Los Angeles test, water absorption, aggregate impact value, and aggregatecrushing value of BA, CBA, and normal aggregates (NA). The second part was focused on compressivestrength and water permeability of pervious geopolymer concrete (PGC) that was produced with BA and CBA.Pervious concrete is a non-slip porous pavement concrete that allows water to slip through. In this study PGCwas prepared from alkaline solution: fly ash ratio of 0:5, fly ash/coarse aggregate ratio of 1:7, Na2SiO3/NaOHratio of 2:5, and NaOH concentration of 10 molarity. PGC was cured at 80°C for 24 h. PGC made with CBAhad higher compressive strength without much effect on water permeability. It has been found that PGC madewith BA and CBA had lower density than PGC made with NA. Results indicated that both BA and CBA areviable alternative aggregates for producing PGC.

Optimum Mix for Pervious Geopolymer Concrete (GEOCRETE) Based on Water Permeability and Compressive Strength

The production of ordinary Portland cement (OPC) consumes considerable natural resources and energy, and it also affects the emission of a significant quantity of CO 2 in the atmosphere. This pervious geopolymer concrete study aims to explore an alternative binder without OPC. Pervious geopolymer concretes were prepared from fly ash (FA), sodium silicate (NaSiO 3 ), sodium hydroxide (NaOH) solution, and coarse aggregate (CA). The effects of pervious geopolymer concrete parameters that affect water permeability and compressive strength are evaluated. The FA to CA ratios of 1:6, 1:7,1:8, and 1:9 by weight, CA sizes of 5–10, 10–14, and 14–20 mm, constant NaSiO 3 /NaOH ratio of 2.5, alkaline liquid to fly ash (AL/FA) ratios of 0.4, 0.5, and 0.6, and NaOH concentrations of 8, 10, and 12 M were the pervious geopolymer concrete mix proportions. The curing temperature of 80 °C for 24 h was used. The results showed that a pervious geopolymer concrete with CA of 10 mm achieved water permeability of 2.3 cm/s and compressive strength of 20 MPa with AL/FA ratio of 0.5, NaOH concentration of 10 M, and FA:CA of 1:7. GEOCRETE is indicated to have better engineering properties than does pervious concrete that is made of ordinary Portland cement.

Properties of Geopolymer Paste from Fly Ash Blended with Metakaolin as Pervious Concrete

The purpose of this research was to study pervious geopolymer concrete with different amounts of lignite fly ash (F), metakaolin (M), sodium silicate (NS) and 8 mol/L sodium hydroxide (NH) solution. Constant NS/NH ratio of 0.5, three alkali liquid/pozzolan (L/P) ratios viz., 0.5, 0.6 and 0.7 and pozzolan to coarse aggregate ratio of 1:8 were used. The compressive strengths of 50×50×50 mm3 cube specimens were tested at the age of 28 days. In addition, compressive strengths of 100 mm in diameter and 200 mm in height cylindrical specimens were tested at the age of 7, 14, 21 and 28 days. The chemical compositions and microstructures of specimens were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM), respectively.The mixture with 50%F+50%M and L/P ratio of 0.7 was the best proportion for pervious geopolymer concrete according to the compressive strength, good permeability and microstructural images. The bond of Si-O-Al and Si-O-Si characterized by Fourier Transform Infrared Spectroscopy (FTIR) spectra confirmed the developed geopolymeric structure.