Hydraulic Performance of Pervious Concrete Based on Small Size Aggregates

Mulu, Arega; Jacob, Preeti; Dwarakish, G. S.

doi:10.1155/2022/2973255

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…Furthermore, it is worth noting that thicker filters at the same A/C or S/C ratio result in lower porosity within the specimen. A higher number of compaction may have reduced the porosity of the thicker specimens, as also found by [27]- [29] in pervious concrete. This implies that the compaction process in a 10 cm thick specimen resulted in a lower porosity compared to the others.…”

Section: Porosity On Different Sand-to-cement Ratios and Thicknessmentioning

confidence: 78%

Permeability coefficient of pervious cement mortar measured by the constant head and falling head methods

Yogafanny,

Triatmadja,

Nurrochmad

et al. 2023

J Appl Eng Science

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The modified pervious concrete and cement mortar, known as pervious cement mortar (PCM), is designed with a specific composition to create pores. The coarse aggregate is removed to form smaller pore sizes. PCM acts as a water filter, needing higher permeability than cement mortar but less than pervious concrete. Its pores drain water while trapping impurities. This study compares the effects of sand-to-cement ratio (S/C), specimen thickness, and age on permeability and porosity. It also contrasts PCM's permeability coefficient determined by constant head and falling head methods. Numerous studies compare permeability coefficients in pervious concrete using these methods, but not for finer aggregate cement-based composite materials like pervious cement mortar. PCM uses fine aggregate (0.6 – 0.85 mm) at 3, 5, and 10 cm thickness with S/C ratios of 4 and 5. Findings show that S/C 5 specimens have significantly higher porosity than S/C 4. The S/C ratios notably impact permeability; the higher ratio means the higher permeability. Permeability coefficients for S/C 4 ranging from 0.006 – 0.075 cm/s, while S/C 5 ranging from 0.010 to 0.147 cm/s. The relationship between the permeability coefficient between the constant head and falling head methods at the age of 90 days specimen are Kc = 1.0516 Kf (S/C 4.2) and Kc = 0.9325 Kf (S/C 5.2). According to these findings, finer aggregates result in a significantly smaller permeability, to the extent that the constant head method is more reliable compared to the falling head method.

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Section: Porosity On Different Sand-to-cement Ratios and Thicknessmentioning

confidence: 78%

Permeability coefficient of pervious cement mortar measured by the constant head and falling head methods

Yogafanny,

Triatmadja,

Nurrochmad

et al. 2023

J Appl Eng Science

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Permeability and Compressive Strength of Pervious Cement Concrete with Small Size Aggregates

Chen,

Zhang,

Wang

et al. 2024

Lecture Notes in Civil Engineering

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To prepare high-performance pervious concrete with excellent mechanical properties and permeability, an orthogonal test method is used to investigate the effects of water-to-binder (W/B) ratio, grading of small size aggregates, and target continuous void content on the mechanical properties and permeability of pervious concrete. The results show that the W/B ratio and grading of small-size aggregates have negligible effects on compressive strength and permeability. The target continuous void content is the key parameter in determining the permeability of concrete. The compressive strength must be controlled within a certain range to ensure a certain range of permeability. Only one permeability parameter is suitable for pervious concrete mix design.

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A mathematical model to predict the porosity and compressive strength of pervious concrete based on the aggregate size, aggregate-to-cement ratio and compaction effort

Wijekoon,

Shajeefpiranath,

Subramaniam

et al. 2023

Asian J Civ Eng

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Hydraulic Performance of Pervious Concrete Based on Small Size Aggregates

Cited by 5 publications

References 44 publications

Permeability coefficient of pervious cement mortar measured by the constant head and falling head methods

Permeability coefficient of pervious cement mortar measured by the constant head and falling head methods

Permeability and Compressive Strength of Pervious Cement Concrete with Small Size Aggregates

A mathematical model to predict the porosity and compressive strength of pervious concrete based on the aggregate size, aggregate-to-cement ratio and compaction effort

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