Investigation of the density, porosity, and permeability properties of pervious concrete with different methods

Akkaya, Ahmet; Çağatay, İsmail H.

doi:10.1016/j.conbuildmat.2021.123539

Cited by 37 publications

(12 citation statements)

References 21 publications

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“…The effective porosity of pervious concrete has the most significant influence on its properties [ 14 ]. Its shaping process needs to take into account both the properties of components of the mix–void coefficient of aggregate and its properties [ 49 ], rheological properties of cement paste or mortar [ 50 ], and compaction method and time, as well as mass ratios between different components of the mix, mainly mortar-to-aggregate ratio and cement-to-sand ratio.…”

Section: Discussionmentioning

confidence: 99%

“…The pervious concrete pore structure may be characterized by different factors, such as pore volume, pore size, connectivity, and tortuosity [ 13 ]. However, due to ease of measurement, the most commonly used characteristics are those regarding pore volume, such as effective (or open) and total (or overall) porosity [ 14 ]. Total porosity is usually calculated based on the fresh mix density, and the effective porosity is measured on hardened samples using f.e.…”

Section: Introductionmentioning

confidence: 99%

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Significance of Vibration Time in Developing Properties of Precast Pervious Concrete

Chilmon,

Jaworska,

Kalinowski

et al. 2023

Materials

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Due to its properties, pervious concrete is usually considered a material of choice for permeable surfaces. However, its permeability properties, as well as mechanical performance, depend on its effective porosity. In this paper, the Authors investigated the influence of material and technological factors on the selected properties of pervious concrete. A new method, based on the Vebe consistency test method, was developed to assess the vibration time required to reach a designed effective porosity of pervious concrete. Five classes of pervious concrete’s consistency measured by the modified vebe method were proposed, and the limiting values to determine optimum vibration time were indicated. A model of dependence between the porosity of pervious concrete, its consistency, and compaction time was proposed. It was found that for the assumed range of variability, compaction time and material composition significantly influence the porosity of pervious concrete, and, therefore, all properties of pervious concrete.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Significance of Vibration Time in Developing Properties of Precast Pervious Concrete

Chilmon,

Jaworska,

Kalinowski

et al. 2023

Materials

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show abstract

“…Conversely, mix 6, including a binder content of 450 kg/m 3 , dune sand addition of 20%, AAS/B of 0.50, and SH molarity of 10 M, achieved the lowest permeability response of 3.02 mm/s. The results show that incorporating a higher binder content decreased the permeability, owing to the refinement of the pore structure that hindered the ease of water percolation [59]. Furthermore, the addition of dune sand to the PGC mixes reduced the permeability.…”

Section: Permeabilitymentioning

confidence: 96%

Optimization of Pervious Geopolymer Concrete Using TOPSIS-Based Taguchi Method

et al. 2022

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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.

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“…The aggregate gradation for the pervious concrete generally includes single-sized coarse aggregates/binary mixture of coarse aggregates with the optimal amount of cement to coat and bind aggregates together [ 5 ]. The cementation material wrapped on the aggregate surface acts as the cementation layer, forming a honeycomb porous material with skeleton pore structure, leading to many pores in pervious concrete [ 6 , 7 , 8 ]. Therefore, the water permeability and strength of pervious concrete are often incompatible due to the large number of voids and larger pores.…”

Section: Introductionmentioning

confidence: 99%

Effects of CO2 Curing on the Properties of Pervious Concrete in Different Paste–Aggregate Ratios

Fang

Wei

et al. 2023

Materials

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To improve the comprehensive performance of pervious concrete, the properties of pervious concrete in different paste–aggregate ratios were subjected to both early CO2 curing and uncarbonated curing conditions. The mechanical properties, water permeability, porosity, and chemical composition of pervious concrete under two curing conditions were investigated and compared. The effects of CO2 curing on the properties of pervious concrete with different paste–aggregate ratios were derived. Through mechanical experiments, it was revealed that early CO2 curing can enhance the mechanical strength of pervious concrete by about 15–18%. Meanwhile, with the increase in the paste–aggregate ratio, the improvement effect induced by early CO2 curing became more significant. The water resistance of carbonated concrete was not significantly reduced. And with the increase in the paste–aggregate ratio, the carbonation degree of pervious concrete was reduced; the differences in porosity and water resistance became less significant when the paste–aggregate ratio exceeded 0.39. Micro-structural analysis shows that the early CO2 curing reduced both total porosity and the volume of micropores with a pore diameter of less than 40 nm, while it increased the volume of pores with a diameter of more than 40 nm. This is also the main reason that the strength of pervious concrete under early CO2 curing is higher than that without CO2 curing. The effect of varying paste–aggregate ratio and curing methods adds to the limited knowledge of the performance of pervious concrete.

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Investigation of the density, porosity, and permeability properties of pervious concrete with different methods

Cited by 37 publications

References 21 publications

Significance of Vibration Time in Developing Properties of Precast Pervious Concrete

Significance of Vibration Time in Developing Properties of Precast Pervious Concrete

Optimization of Pervious Geopolymer Concrete Using TOPSIS-Based Taguchi Method

Effects of CO2 Curing on the Properties of Pervious Concrete in Different Paste–Aggregate Ratios

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