Mix design, durability and strength enhancement of cold mix asphalt: a state-of-the-art review

Deb, Pinki; Singh, Kh. Lakshman

doi:10.1007/s41062-021-00600-2

Cited by 14 publications

(9 citation statements)

References 82 publications

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“…These cement particles have a high surface area and high negative charge which helps in breaking the asphalt emulsion faster [26]. The hydration hydrates are mainly responsible for the ultimate strength of CRM, which can also help in accelerating the initial strength [72]. Adding a certain amount of cement can improve the performance of CRM, but excessive cement causes the deterioration of water stability and shrinkage characteristics of CRM.…”

Section: Asphaltsmentioning

confidence: 99%

Study on Cold Recycled Asphalt Mixtures with Emulsified/Foamed Asphalt in the Laboratory and On-Site

Zhao

Su²,

Su³

et al. 2022

Coatings

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Millions of tons of reclaimed asphalt pavement (RAP) and reclaimed aggregate or reclaimed inorganic binder stabilized aggregate (RAI) is produced every year in China. The cold recycled mixture (CRM) technology reduces fuel consumption, emissions, and cost and utilizes the high content of RAP. In this paper, six types of CRM with varying RAP/RAI composition and asphalt binders were investigated. The laboratory tests included strength indicators, high temperature stability, low temperature crack resistance, water stability, and dynamic modulus. A full-scale trial section was constructed after the laboratory tests. Except for low temperature failure strain without secondary compaction in the mixture design, test results illustrated that the performances of different CRMs met the specifications. The cement addition limited the thermo-viscoelastic behavior of the CRM. The RAI contents had reduced the water sensitivity of CRM, and the emulsified asphalt CRM had better performance than the foamed asphalt CRM. The performances of samples cored from the test section in the field met the specifications and were lower than that in the laboratory. The curing conditions in the field were not as effective as in the laboratory. The curing conditions and compaction method should simulate the conditions in the field to guide the CRM selection and mixture design.

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Section: Asphaltsmentioning

confidence: 99%

Study on Cold Recycled Asphalt Mixtures with Emulsified/Foamed Asphalt in the Laboratory and On-Site

Zhao

Su²,

Su³

et al. 2022

Coatings

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“…Keawetan adalah kemampuan campuran beraspal untuk terus menerus melawan pengaruh air dan suhu [6], [8], [10], [29]. Terdapat dua mekanisme dimana air dapat merusak integritas struktural antar muka agregat aspal, (i) air dapat menyebabkan hilangnya kohesi (kekuatan) dan kekakuan aspal, dan (ii) air menyerang ikatan perekat antara aspal dan agregat dalam campuran (stripping).…”

Section: Hasil Riset Tentang Keawetan Bahan Perkerasan Jalanunclassified

“…Upaya untuk meningkatkan kinerja kekuatan dan keawetan campuran telah banyak dilakukan [8]- [11]. Berbagai upaya yang dilakukan telah menghasilkan perbaikan sifat campuran beraspal, namun ternyata juga masih disertai adanya pengaruh negatif.…”

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Implementation of Palm Oil Waste Nano Technology to Increase the Durability of Road Pavement Materials: Proposed Research Roadmap

Sunarjono¹,

Ngafwan²

2022

UJE

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Many road pavements using asphalt mixtures in Indonesia are found to be not durable, especially heavy traffic roads. Even road damage often occurs early before the service life is reached. Many efforts have been made to improve the strength and durability of the mixture, but have not been effectively. For example, the use of fillers can increase the strength and durability of the mixture significantly, but its performance at low temperatures has an impact on the risk of hardening and cracking. The research objective is to propose the idea of implementing nanotechnology for palm oil waste materials to increase the durability of road pavement materials based on the research roadmap developed. The method used is through five approaches, namely: (i) review of research results on the durability of road pavement materials, (ii) review of research results on the implementation of nanotechnology in road pavement materials, (iii) research gaps, (iv) research ideas, and, (v) proposed research roadmap. A research roadmap for the implementation of nanotechnology to improve the durability of road pavement materials has been prepared. The substance of the research roadmap proposes three ideas, namely maximizing the function of nanomaterials as: (i) anti-aging agent, (ii) protecting water infiltration into the body of the asphalt mixture, and (iii) bonding agent between asphalt-aggregate.

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“…The composition of the BE-CIR mixture includes emulsified bitumen, virgin aggregates, recycled asphalt pavement (RAP), additional water, and various inorganic additives (e.g., Portland cement) [5]. Due to the low viscosity of bitumen emulsion, BE-CIR mixture can be mixed, paved and compacted at an ambient temperature, as opposed to the traditional hot-mix asphalt (HMA) [6,7]. The adding of Portland cement can improve the mechanical properties of mixtures by promoting the dispersion of the bitumen, regulating the breaking of the emulsion and accelerating the curing time [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Cracking Resistance Gradient of Bitumen Emulsion-Based Cold In-Place Recycling Mixtures over Curing by Semi-Circular Bending Test

Zhao,

Jiang,

2023

Coatings

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To better reveal the performance development of bitumen emulsion-based cold in-place recycling (BE-CIR) mixture over curing, a semi-sealed laboratory curing method was proposed in this research to simulate the in situ moisture evaporation process and cracking resistance of the BE-CIR specimen at different depths during a curing time of 28 days, which was also investigated by the semi-circular bending (SCB) test. The influencing factors of cement content (1.5% to 2.5%), initial moisture content (3.5% to 4.5%), curing temperature (25 °C to 45 °C) and relative humidity were investigated, and the significance of different factors affecting the performance development was also analyzed. The results indicate significant variations in cracking performance parameters at different depths, with the top part exhibiting notably higher tensile strength and fracture energy compared to the bottom part, and a gradient index (GI) is proposed to describe the difference. Cement content affected early tensile strength and fracture energy, while the initial moisture content affected the development rate of the performance. The influence of curing temperature was extensive, and as the temperature increased beyond 40 °C, the strength of the effect decreased. High humidity during the early stage of curing inhibited the strength formation and development of fracture energy. The performance development of the BE-CIR mixture is more significantly influenced by the moisture migration process, which is governed by curing temperature and relative humidity, as opposed to the cement content and initial moisture content.

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Mix design, durability and strength enhancement of cold mix asphalt: a state-of-the-art review

Cited by 14 publications

References 82 publications

Study on Cold Recycled Asphalt Mixtures with Emulsified/Foamed Asphalt in the Laboratory and On-Site

Study on Cold Recycled Asphalt Mixtures with Emulsified/Foamed Asphalt in the Laboratory and On-Site

Implementation of Palm Oil Waste Nano Technology to Increase the Durability of Road Pavement Materials: Proposed Research Roadmap

Characterization of the Cracking Resistance Gradient of Bitumen Emulsion-Based Cold In-Place Recycling Mixtures over Curing by Semi-Circular Bending Test

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