Influence of nano-silica modified rubber mortar and EVA modified porous asphalt on the performance improvement of modified semi-flexible pavement

Davoodi, Asieh; Esfahani, Mohsen Aboutalebi; Bayat, Meysam; Mohammadyan-Yasouj, Seyed Esmaeil; Rahman, Ali

doi:10.1016/j.conbuildmat.2022.127573

Cited by 25 publications

(7 citation statements)

References 27 publications

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“…It is a kind of polymer emulsion which is formed by the copolymerization of vinyl acetate and vinyl monomer with other auxiliary materials through emulsion polymerization. Its molecular formula is shown in Figure 2 [20]. Due to the high relative molecular weight of SBR, the interaction force between molecules is also large, and the molecules are intertwined, so SBR has good viscoelasticity.…”

Section: Evamentioning

confidence: 99%

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Research on Performance Improvement of Emulsified Asphalt Mixture Based on Innovative Forming Process

Xiao,

Qu,

Jiang

et al. 2024

Materials

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Bulk density and porosity have great influence on the technical performance of an emulsified asphalt mixture, so in order to enhance the strength of the asphalt mixture, bulk density should be improved and porosity should be reduced. Considering the forming process of the emulsified asphalt mixture, the decrease in porosity can ensure the state of the mixture. In order to reduce the porosity of the emulsified asphalt mixture, an innovative forming process is proposed to improve the performance of the emulsified asphalt mixture, and its strength formation mechanism is explored in this paper. Three groups of emulsified asphalt mixtures (ARC-8 + SBR, SMA-5 + EVA, SMA-5 + SBR) were prepared by a conventional mixing process and novel mixing process. Marshall test of the emulsified asphalt mixture, CT scanning test of the emulsified asphalt mixture, workability test and analysis were manufactured and tested. The results show that, compared with conventional methods, the innovative forming method can increase the bulk density of the mixture and reduce the porosity, and thus improve its technical performance. The reason is that most of the water in the mixture of the innovative forming method sticks to the outer surface of the fine aggregate, and the water is more easily discharged. Secondly, the fine aggregate of the innovative forming method is directly mixed with the emulsion, and the volume is smaller. The emulsion wraps the fine aggregate in it due to the surface tension, which enhances the adhesion effect, thus improving the strength of the mixture.

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Section: Evamentioning

confidence: 99%

Section: Evamentioning

confidence: 99%

Research on Performance Improvement of Emulsified Asphalt Mixture Based on Innovative Forming Process

Xiao,

Qu,

Jiang

et al. 2024

Materials

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“…To enhance specific properties of rubberized cement-based materials, incorporating additives is a direct and straightforward approach [25][26][27]. Fly ash (FA), a common industrial by-product, possesses smooth morphological characteristics that facilitate a beneficial "ball-bearing effect".…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Thermal Insulation Rubberized Mortar Modified by Fly Ash and Glass Fiber

Pan,

Liu,

et al. 2024

Buildings

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The utilization of waste rubber as a viable option for manufacturing building materials holds great significance for the sustainable development of the construction industry. This study explores the addition of two additives, fly ash (FA) and glass fiber (GF), to rubberized mortar in order to improve its performance. The impact of different waste rubber powder (RP) replacement rates and modified additive dosages on the performance of rubberized mortar, including fluidity, mechanical properties, drying shrinkage, impact resistance, and thermal insulation properties, was investigated. Furthermore, the analytic hierarchy process (AHP) was adopted to study the priorities of the rubberized mortar modified by FA and GF. The results indicate that the addition of RP leads to a decrease in mortar fluidity, mechanical properties, and drying shrinkage. However, it can enhance its impact resistance and thermal insulation properties. The additives, FA and GF, have a significant influence on the properties of rubberized mortar. By means of AHP method analysis, this study concludes that the optimal comprehensive properties of FA- and GF-modified rubberized mortar can be achieved by replacing 10% of sand with RP and using 10% FA and 0.4% GF. This study presents a configuration method for modified thermal insulation rubberized mortar, and it may lead to FA and GF being considered potential candidates for developing environmentally friendly building materials.

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“…Porous asphalt concrete is a mixture of asphalt concrete with open-graded aggregate, a large proportion of coarse aggregate, and a small proportion of fine aggregate, thus providing a large air cavity [3]. Large air cavities offer advantages to water flow so that the road surface is immediately accessible from puddles.…”

Section: Introductionmentioning

confidence: 99%

Modification of High-Quality Porous Concrete Asphalt with Local Materials as an Alternative to Flexible Pavement

Irawati,

Dewi

2024

Reka Buana

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Environmental issues and a lack of attention to open space as rainwater catchment areas cause flooding problems in urban areas. Constructing environmentally friendly roads with permeable capabilities is one way to prevent waterlogging along the road in the rainy season. This study evaluated the type of porous asphalt concrete called Open Graded Friction Course specification Japanese standard. This study modified porous asphalt concrete using bamboo fiber and hydrated lime. Stability testing is conducted by the Marshall method, and the volumetric mixture is analyzed. Stability testing is carried out by the Marshall method and analysis of the volumetry of the mixture is carried out. The results showed that adding bamboo fiber and hydrated lime increased stability and maintained the porosity of the porous asphalt concrete.

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Influence of nano-silica modified rubber mortar and EVA modified porous asphalt on the performance improvement of modified semi-flexible pavement

Cited by 25 publications

References 27 publications

Research on Performance Improvement of Emulsified Asphalt Mixture Based on Innovative Forming Process

Research on Performance Improvement of Emulsified Asphalt Mixture Based on Innovative Forming Process

Performance Evaluation of Thermal Insulation Rubberized Mortar Modified by Fly Ash and Glass Fiber

Modification of High-Quality Porous Concrete Asphalt with Local Materials as an Alternative to Flexible Pavement

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