Effect of nano silica on frost resistance of pervious concrete

Tarangini, D.; Sravana, P.; Rao, P. Srinivasa

doi:10.1016/j.matpr.2021.11.132

Cited by 19 publications

(12 citation statements)

References 16 publications

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“…Tarangini et al [73] observed a (27-31)% decrease in weight loss following 50 F-T cycles in the concretes containing a microsilica addition, compared to control samples.…”

Section: Resultsmentioning

confidence: 98%

Influence of Water with Oxygen and Ozone Micro-Nano Bubbles on Concrete Physical Properties

et al. 2022

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In this study, the possibility of using mixing water containing O2 and O3 micro-nano bubbles (M-NBs) in concrete technology was investigated. In particular, the effect of micro-nano bubbles on the durability and frost resistance of concrete was analyzed. Concretes with two types of micro-nano bubbles were studied. The physical properties of both the modified concretes and the reference concrete were determined, i.e., specific and apparent density, porosity, weight absorption and coefficient of water absorption. Mechanical parameters based on compressive and flexural strength were tested after 14 and 28 days of curing. Concrete durability was determined on the basis of frost resistance and resistance to salt crystallization. The pore distribution in the cement matrix was determined based on porosimetry studies. The use of water with micro-nano bubbles of O2 and O3, among others, contributed to a reduction in the water absorption coefficient from 42.7% to 52.3%, in comparison to the reference concrete. The strength characterizing the concrete with O3 increased by 61% after 28 days, and the frost resistance after 150 F-T cycles increased by 2.4 times. Resistance to salt crystallization improved by 11% when water with O3 was used.

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“…Tarangini et al [73] observed a (27-31)% decrease in weight loss following 50 F-T cycles in the concretes containing a microsilica addition, compared to control samples.…”

Section: Resultsmentioning

confidence: 98%

Influence of Water with Oxygen and Ozone Micro-Nano Bubbles on Concrete Physical Properties

et al. 2022

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“…Refs. Metakaolin (MK) [53,61] Basalt [51,56,63,79] Basalt fibers [78,86] Nano-clay [81,90] Lignite [50] Jute fibers [54] Limestone [20,51,52,59,66,71 ,80] Granite [31,84,88,92] Pumice [51,90] Zeolite [20] Industrial wastes…”

Section: Methodsmentioning

confidence: 99%

“…Schematic presentation of the use of alternative materials to replace the cement and aggregated in conventional cement mix design (copyrighted [47]). Natural materials Metakaolin (MK) [53,61] Basalt [51,56,63,79] Basalt fibers [78,86] Nano-clay [81,90] Lignite [50] Jute fibers [54] Limestone [20,51,52,59,66,71,80] Granite [31,84,88,92] Pumice [51,90] Zeolite [20] Industrial wastes…”

Section: Methodsmentioning

confidence: 99%

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Permeable Concrete Barriers to Control Water Pollution: A Review

Abdel Rahman,

El-Kamash,

Hung

2023

Water

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Permeable concrete is a class of materials that has long been tested and implemented to control water pollution. Its application in low-impact development practices has proved its efficiency in mitigating some of the impacts of urbanization on the environment, including urban heat islands, attenuation of flashfloods, and reduction of transportation-related noise. Additionally, several research efforts have been directed at the dissemination of these materials for controlling pollution via their use as permeable reactive barriers, as well as their use in the treatment of waste water and water purification. This work is focused on the potential use of these materials as permeable reactive barriers to remediate ground water and treat acid mine drainage. In this respect, advances in material selection and their proportions in the mix design of conventional and innovative permeable concrete are presented. An overview of the available characterization techniques to evaluate the rheology of the paste, hydraulic, mechanical, durability, and pollutant removal performances of the hardened material are presented and their features are summarized. An overview of permeable reactive barrier technology is provided, recent research on the application of permeable concrete technology is analyzed, and gaps and recommendations for future research directions in this field are identified. The optimization of the mix design of permeable reactive concrete barriers is recommended to be directed in a way that balances the performance measures and the durability of the barrier over its service life. As these materials are proposed to control water pollution, there is a need to ensure that this practice has minimal environmental impacts on the affected environment. This can be achieved by considering the analysis of the alkaline plume attenuation in the downstream environment.

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“…In the process of use, the main factors affecting the freeze-thaw durability of pervious concrete include environment temperature, rain and vehicle load [20][21][22][23]. Among these, the environmental temperature is the main factor limiting the application of pervious concrete in cold areas.…”

Section: Introductionmentioning

confidence: 99%

The Strength and Elastic Modulus of Pervious Concrete Considering Pore and Fiber during Freeze–Thaw Cycles

Dai

Shi

et al. 2022

Sustainability

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The interface between aggregate and cement matrix and the strength of the cementation layer between aggregates are the key factors affecting the strength of pervious concrete. The purpose of this paper is to evaluate the effects of porosity, compressive strength and elastic modulus of pervious concrete before and after freeze–thaw cycles. The effective porosity and total porosity were obtained by the underwater weighing and CT (computed tomography) image analysis methods. Uniaxial and triaxle compression tests were carried out to obtain the strength and elastic modulus of pervious concrete considering pore and fiber. The results indicated that the effective modulus and effective stress were closely related to the porosity, and the continuous fracture of cementation points between aggregates caused damage to pervious concrete. Inclined shear failure of pervious concrete occurred under uniaxial pressure, and the strength and elastic modulus increased with increases in confining pressure. With the increase in freeze–thaw cycles, the porosity increased linearly, the strength and elastic modulus decreased and a mutational point appeared between 40 and 50 times during the freeze–thaw cycles. The fiber enhanced the strength of the cementation layer and increased the connection between aggregates, thus improving the strength and integrity of pervious concrete. This work is needed to serve as a reference for the fracture mechanism of pervious concrete and the effect of freeze–thaw cycles considering pore and fiber.

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Effect of nano silica on frost resistance of pervious concrete

Cited by 19 publications

References 16 publications

Influence of Water with Oxygen and Ozone Micro-Nano Bubbles on Concrete Physical Properties

Influence of Water with Oxygen and Ozone Micro-Nano Bubbles on Concrete Physical Properties

Permeable Concrete Barriers to Control Water Pollution: A Review

The Strength and Elastic Modulus of Pervious Concrete Considering Pore and Fiber during Freeze–Thaw Cycles

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