Preparation and characterization of waterborne epoxy modified bitumen emulsion as a potential high-performance cold binder

Li, Rui; Leng, Zhen; Zhang, Yuan; Ma, Xiang

doi:10.1016/j.jclepro.2019.06.267

Cited by 94 publications

(34 citation statements)

References 41 publications

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“…The peak at 860 cm −1 is formed by the bending vibration outside of the =C-Hplane on the benzene ring. It has a characteristic disc-shaped aromatic tablet with a high polycondensation peri-configuration [17]. It is also observed that the three emulsions contain the =C-Hfunctional group.…”

Section: Modification Mechanism Analysis Of Wermentioning

confidence: 94%

“…Specifically, the WESAE was first evaporated until its weight dropped to 80% of the initial weight, then it was poured into the test mold and placed in an oven to obtain the evaporation residue. In order for the water to evaporate completely, the evaporation process included 6 h of evaporation at 80 • C, followed by 4 h of evaporation at 135 • C. Li et al [17] also used a similar method to acquire a waterborne epoxy asphalt emulsion residue. After the residue was obtained, its penetration and softening point were tested according to the JTG E20-2011 specifications.…”

Section: Penetration and Softening Point Testsmentioning

confidence: 99%

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Performance Characterization of Waterborne Epoxy Resin and Styrene–Butadiene Rubber Latex Composite Modified Asphalt Emulsion (WESAE)

2020

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Neat asphalt emulsions have poor physicochemical properties. In order to endow neat asphalt emulsions with excellent physicochemical properties and broaden their application as pavement, this study adopted the composite modification method using waterborne epoxy resin (WER) and styrene–butadiene rubber (SBR) latex. Firstly, a waterborne-epoxy–SBR composite modified asphalt emulsions (WESAEs) with different amounts of WER were prepared, and the storage stability, workability, and residual properties were characterized with a series of tests. Then, the performance of the WESAEs was comprehensively evaluated by multiobjective gray target decision-making method, through which the optimal amount of WER in WESAE was determined. Lastly, the modification mechanism of WER was revealed by Fourier-transform infrared spectroscopy test. The results show that the incorporation of WER improves the high-temperature performance, thermal stability, rheological property, and adhesion of the SBR modified asphalt emulsion (SBRAE) residues. However, an excessive amount of WER will adversely affect the storage stability, particle distribution uniformity, and workability of the WESAE binder. The WESAE with 3% WER showed the best comprehensive performance; thus, the optimal amount of WER is 3% of the weight of the WESAE. Additionally, modification of the SBRAE by WER is a physical blending process, meaning no chemical reaction occurs in the blending process.

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Section: Modification Mechanism Analysis Of Wermentioning

confidence: 94%

Section: Penetration and Softening Point Testsmentioning

confidence: 99%

Performance Characterization of Waterborne Epoxy Resin and Styrene–Butadiene Rubber Latex Composite Modified Asphalt Emulsion (WESAE)

2020

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“…The content of bitumen in asphalt granulate is 4.63% of the mass of the mineral part. At present, a rather great interest of researches of cold reclaimed mixes is riveted to modifiers based on epoxy resins [17][18][19][20][21][22][23][24][25][26] and styrene-acrylates [27][28][29][30][31][32].…”

Section: Initial Materials and Experimental Compositions Accepted Formentioning

confidence: 99%

Fatigue resistance of modified cold reclaimed mixes with 100% content of recycled asphalt pavement (RAP)

Zankavich¹,

Khroustalev

Veranko³

et al. 2020

SN Appl. Sci.

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This study is devoted to finding a solution to an important problem of increasing the accuracy of assessing the fatigue stability of composites based on recycled asphalt concrete. Another problem for solving was a selecting optimal and effective ways to improve their physical-mechanical properties during modification by polymers. For experimental work, a new indicator reflecting the strength of elastic structural bonds and the specific number of viscoplastic bonds was used as a criterion for fatigue stability of bituminous-cement composites. As shown by the results of the research, fatigue (cyclic) stability has an increasing trend with the growth of these parameters. As a result of processing data from experimental studies of the structural characteristics of composites, a comparative analysis of the effectiveness of modification of cold recycled mixes by styrene acrylate and epoxy resin was performed. It was established that the composites modified with styrene acrylates have a higher relaxation ability, which is reflected in the increase in the number of cycles to failure when testing for cyclic stability. It is also noted that with an increase in the content of epoxy resin in the composition of mixes, the increase in stiffness occurs much more strongly in comparison with an increase in their relaxation ability. At the same time, the efficiency of modification of cold recycled mixes with epoxy resins is significantly increased with the preliminary preparation of asphalt granulate (RAP), for example, during its plasticization with soy epoxidized oil. This work also allowed us to outline some areas of development of the methodological foundations for assessing the cyclic and fatigue stability of composites based on cold recycled mixes. Keywords Fatigue resistance • Recycled asphalt pavement (RAP) • Modified cold reclaimed mixes • Styrene-acrylic water dispersion • Water dispersion of epoxy resin • Epoxidized soybean oil * Vitali Zankavich,

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“…e waterborne epoxy resin emulsified asphalt (WEA) forms a three-dimensional network structure through the physical-chemical cross-linking of waterborne epoxy resin (WER) and curing agent, which retains the excellent thermal stability, bonding strength, and waterproof performance of epoxy resin and has good construction advantages of emulsified asphalt [17][18][19][20][21][22]. In the field of road engineering, many studies have been carried out on WEA as binder for microsurfacing and cold mix asphalt mixture [23][24][25][26]. At the same time, WEA as waterproof bonding material used in cement concrete bridge deck pavement has also carried out some research.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization and Performance Evaluation of the Open‐Graded Friction Course with Small Particle Size Aggregate

Wang

et al. 2021

Advances in Civil Engineering

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This study aims to optimize the bonding performance between the wearing course and the used pavement or the underlying layer and further improve the service quality and durability of the open-graded friction course with small particle size aggregate (ultrathin OGFC). The ultrathin OGFC including waterborne epoxy resin emulsified asphalt (WEA) bonding layer and open-graded asphalt concrete with 9.5 mm nominal maximum aggregate size gradation was optimized. The construction timing of the open-graded asphalt mixture was determined. The road performance, wear resistance, and interlaminar bonding durability of the ultrathin OGFC were comprehensively evaluated. The results show that, based on the basic properties of the open-graded asphalt mixture, its asphalt aggregate ratio is recommended to be 5.0–5.5%. Based on interlaminar shear strength, it is recommended that the open-graded asphalt mixture is paved immediately after WEA bonding material was sprayed, and the bonding layer does not spread aggregate. The WEA containing 20% waterborne epoxy resin (WER) is recommended as bonding layer for the ultrathin OGFC, and the optimized spraying amount is 1 kg/m2. The ultrathin OGFC has good antisliding, drainage, and wear resistance properties. The interlaminar bonding performance, water stability, and durability of WEA bonding layer are obviously better than those of high viscosity asphalt (HVA) and SBS-modified asphalt. The WEA bonding layer can better resist interlaminar shear failure and improve the service quality and service life of the ultrathin OGFC.

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Preparation and characterization of waterborne epoxy modified bitumen emulsion as a potential high-performance cold binder

Cited by 94 publications

References 41 publications

Performance Characterization of Waterborne Epoxy Resin and Styrene–Butadiene Rubber Latex Composite Modified Asphalt Emulsion (WESAE)

Performance Characterization of Waterborne Epoxy Resin and Styrene–Butadiene Rubber Latex Composite Modified Asphalt Emulsion (WESAE)

Fatigue resistance of modified cold reclaimed mixes with 100% content of recycled asphalt pavement (RAP)

Design Optimization and Performance Evaluation of the Open‐Graded Friction Course with Small Particle Size Aggregate

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