Improving fracture and moisture resistance of cold mix asphalt (CMA) using crumb rubber and cement

Daneshvar, Dana; Motamed, Arash; Imaninasab, Reza

doi:10.1080/14680629.2020.1830152

Cited by 17 publications

(4 citation statements)

References 35 publications

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“…However, due to the high air void content and lacking in adequate curing, the soaking conditioning at 60 °C for 24 hours may be undesirable for CBEM. So, the AASHTO T 283 [40] was utilized with specific alterations as suggested by previous studies [5,41,42]. The temperature for soaking was lowered from 60 °C to 25 °C, and the time was extended to 48 hours.…”

Section: Indirect Tensile Strength (Its) and Tensile Strength Ratio (...mentioning

confidence: 99%

Influence of Flyash Filler on Cold Bitumen Emulsion Mix Properties

Prasad,

Suman,

Singh

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Application of Cold bituminous emulsion mix (CBEM) for the construction and maintenance of bituminous roads can offer several benefits toward environment and economic aspects over conventional hot mix asphalt due to its production at ambient temperature. However, its application is limited due to its lower early strength, which further affects its durability. To address these issues, many researchers have suggested to use fillers to improve the characteristics of CBEM. The present study utilized flyash as partial replacement of conventional filler, stone dust (SD) to modify the CBEM. This study is mainly aimed to examine the effect of flyash as a filler on the strength characteristics and moisture susceptibility of CBEM. The CBEM prepared by 100% SD as filler was considered as the control CBEM. The flyash modified CBEM was prepared by replacing SD with flyash at 20, 40, 60, 80, and 100% of the total weight of the filler. For further improvement curing was applied by keeping prepared specimens in oven at 40 °C for 1, 3 and 7 days before performing any tests. The Marshall stability and indirect tensile strength (ITS) were evaluated to analyze the strength characteristics of CBEM. The moisture susceptibility of CBEM was analyzed by evaluating retained stability and tensile strength ratio (TSR) tests. The results of these tests were compared to the control CBEM sample, and it was found that the inclusion of flyash improved the characteristics of CBEM. In addition, these properties were found to be further improved by increasing curing intervals. Based on the results, it was observed that 60 % flyash replacement meet the requirements after three days of curing.

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Section: Indirect Tensile Strength (Its) and Tensile Strength Ratio (...mentioning

confidence: 99%

Influence of Flyash Filler on Cold Bitumen Emulsion Mix Properties

Prasad,

Suman,

Singh

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Its lower strength and stiffness, compared to HMA, can affect its durability and resistance to deformation. Several studies have shown that CMA pavements have lower stiffness and elastic modulus compared to HMA pavements [44][45][46]. This reduced strength can lead to premature failure and increased maintenance costs.…”

Section: Technical Challengesmentioning

confidence: 99%

Advancements and Challenges in the Use of Cold Mix Asphalt for Sustainable and Cost-Effective Pavement Solutions

Al-Hashimi,

Al-Busaltan,

Al-Abbas

2023

E3S Web Conf.

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Even with the high advancement of the pavement industry, the use of traditional hot mix asphalt (HMA) for pavement construction and maintenance is associated with high energy consumption, greenhouse gas emissions, and production costs. As a result, researchers and industrial practitioners aspire to use cold mix asphalt (CMA) as an alternative that offers environmental and economic benefits. This paper provides an overview of the advancements and challenges in using CMA for sustainable and cost-effective pavement solutions. The paper reviews portrays, and discloses CMA’s recent benefits, such as reduced energy consumption, lower emissions, and enhanced durability. Additionally, the paper addresses the challenges associated with using CMA, including its limited application areas and potential performance issues. It discusses the strategies being developed to overcome these challenges. Furthermore, the paper concludes with recommendations for the future of research and industry development of CMA to further promotion. Meanwhile, it is finalizing the current sight for using CMA as a sustainable, cost-effective pavement solution.

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“…Such disadvantages result in there being little interest in substituting HMA with a CBEM. Several methods have so far been examined by researchers to develop and advance this technology, including the use of filler types [10][11][12][13][14][15], advanced polymers [16][17][18][19], compaction energy [10,[20][21][22], heating techniques via microwave [23][24][25], polymers [18,26], and crumb rubber [27,28]. While these methods show a slight modification in volumetric properties, other properties have shown better improvement.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Impact of Polymer and Portland Cement on the Crack Resistance of Half-Warm Bituminous Emulsion Mixtures

Al-Kafaji,

Al-Busaltan,

Kadhim

et al. 2023

Sustainability

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Cold mix asphalt (CMA) is emerging as an environmentally friendly alternative to traditional hot mix asphalt (HMA). It offers advantages such as lower costs, reduced energy demands, decreased environmental impacts, and improved safety aspects. Among the various types of CMA, the cold bitumen emulsion mixture (CBEM) stands out. The CBEM involves diluting bitumen through emulsification, resulting in lower bitumen viscosity. However, this process has certain drawbacks, including extended setting (curing) times, lower early strength, increased porosity, and susceptibility to moisture. This study focuses on enhancing CBEM properties through the utilization of low-energy heat techniques, such as microwave technology, and the incorporation of a polymeric additive, specifically acrylic. These innovations led to the development of a novel paving technology known as a half-warm bitumen emulsion mixture (HWBEM). The research was conducted in two phases. First, the study assessed the impact of low-energy heating on the CBEM. Subsequently, it explored the combined effects of low-energy heating and the addition of an acrylic polymer. CBEM samples containing ordinary Portland cement (OPC) as an active filler were utilized in the sample manufacturing process. The effectiveness of these techniques in enhancing crack resistance was evaluated by analysing the results of the indirect tensile strength test. Notably, CBEM samples containing an amount of 2.5% of acrylic polymer and OPC exhibited the highest resistance to cracking. Furthermore, significant improvements were observed in their volumetric and mechanical properties, comparable to those of HMA.

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Improving fracture and moisture resistance of cold mix asphalt (CMA) using crumb rubber and cement

Cited by 17 publications

References 35 publications

Influence of Flyash Filler on Cold Bitumen Emulsion Mix Properties

Influence of Flyash Filler on Cold Bitumen Emulsion Mix Properties

Advancements and Challenges in the Use of Cold Mix Asphalt for Sustainable and Cost-Effective Pavement Solutions

Investigating the Impact of Polymer and Portland Cement on the Crack Resistance of Half-Warm Bituminous Emulsion Mixtures

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