Modeling Mechanical Properties of Cement Asphalt Emulsion Mortar with Different Asphalt to Cement Ratios and Temperatures

Ouyang, Jian; Zhao, Jiuye; Tan, Yiqiu

doi:10.1061/(asce)mt.1943-5533.0002480

Cited by 56 publications

(51 citation statements)

References 30 publications

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“…Compared with hot-mix asphalt technology, warm-mix asphalt technology can lower the mixing and compaction temperatures, thus saving energy consumption and reducing the emission of harmful gas. erefore, warm-mix asphalt technology can probably be classified as green technology for road construction [17,18]. e application of warm-mix asphalt technology to the porous asphalt pavement can not only improve functional pavements but also can be beneficial to the environment.…”

Section: Introductionmentioning

confidence: 99%

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Jian

Fan

Lin

et al. 2020

Advances in Materials Science and Engineering

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In order to evaluate the possibility of the application of warm mixing technology in high-viscosity asphalt mixture, in this paper, the effects of surfactant warm-mix additives (WMAs) on physical and rheological properties of high-viscosity asphalt (HVA) which was prepared with self-developed SBS/C9 petroleum resin blends (SPR) modifier were measured. The results indicate that the addition of WMA can decrease the viscosity and softening point but improve the penetration and ductility of warm-mix HVA. With the increase of the content of WMA, the modulus, failure temperature, viscosity, and recovery rate of warm-mix HVA all increased at first and then decreased, and the maximum value appeared when the modifier content was 1.0%–1.5%. Moreover, when the amount of WMA is 1.5%, the low-temperature performance of warm-mix HVA reaches the best value. Thus, the amount of WMA is of great importance for the warm-mix HVA, and in order to achieve ideal rheological properties, the recommended amount of WMA is 1.0%–1.5%. Considering economic improvement and environmental protection, WMA could be an alternative for increasing the workability of HVA.

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Section: Introductionmentioning

confidence: 99%

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Jian

Fan

Lin

et al. 2020

Advances in Materials Science and Engineering

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“…e contact angle between emulsified asphalt and RAP can change as the surface energy of the two changes. According to Young's equation, as shown in equation (2), the adhesion force between the liquid and the solid can be calculated as long as the surface tension c l of the liquid and the contact angle θ between them are measured. e surface tension of the same test liquid is the same.…”

Section: Effects Of Rap Modification On Contact Anglementioning

confidence: 99%

“…During the service of asphalt pavement, aging can inevitably occur due to the combined effects of heat, oxygen, sunlight, and water. e utilization of recycled asphalt pavement (RAP) in the cold recycling process of asphalt pavement possesses the dual benefits of saving energy and protecting the environment [1,2]. However, the application of RAP in asphalt mixture is highly limited due to the presence of the aged asphalt on the RAP surface [3,4], which can reduce the properties of cold recycled asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Adhesion Improvement between RAP and Emulsified Asphalt by Modifying the Surface Characteristics of RAP

Wang

Guo

et al. 2020

Advances in Materials Science and Engineering

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Recycled asphalt pavement (RAP) can be used in highway engineering again by cold recycled technology. Due to the aged asphalt on the surface of RAP, some problems such as poor adhesion between emulsified asphalt and RAP and the low properties of emulsified asphalt recycling mixture are easy to occur. This work aims at analyzing the aging degree of asphalt from RAP surface and improving the poor adhesion between RAP and emulsified asphalt by modifying the surface characteristics of RAP. In this work, a new device was designed to delaminate off the asphalt on the surface of RAP. The aging degree of asphalt at different layers was studied then by physical properties and molecular weight distribution. Slurry of hydrated lime (Ca(OH)2) (S-Ca) and slurry of silane coupling agent (SCA) modified Ca(OH)2 (S-Si-Ca) were used to modify the asphalt on the surface of RAP, respectively. The adhesion between emulsified asphalt and RAP was studied by contact angle and boiling method. Results show that the asphalt on the RAP surface can be successfully stripped into four layers through the self-designed RAP delaminating and stripping device. The aging degree of asphalt wrapped around the surface of the RAP showed a tendency to be gradually severe from outside to inside. However, asphalt at the innermost layer (L4) shows abnormal situation due to the fact that the light components are absorbed by the aggregate. In addition, reasonable dosage of SCA is determined as 3.0% in Ca(OH)2 powder mass. Both S-Ca and S-Si-Ca can effectively reduce the contact angle and thus improve the adhesion between emulsified asphalt and RAP. Moreover, S-Si-Ca possesses the most obvious modification effect attributed to the formation of asphalt-SCA-Ca(OH)2 structure.

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“…PC is also used in the production of cement asphalt mortars (CAM). According to [22][23], CAMs are used to create cushion layers that dissipate mechanical energy and noises generated by highspeed trains. PC increases CAM stiffness as the asphalt to cement (A/C) ratio decreases.…”

Section: Pc In Asphalt Mixturesmentioning

confidence: 99%

Evaluation of Hot-Mix Asphalt Containing Portland Cement Treated Blast Furnace Slag

Quintana

Ruge

Bastidas-Martínez

2019

Archives of Civil Engineering

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Iron production’s waste materials include significant quantities of blast furnace slag (BFS) which could potentially be used as a substitute for natural aggregates in hot mix asphalt (HMA) used in highway projects. Although many of properties of slag are interesting, its porosity and absorption rate would lead to greater consumption of asphalt. For this study, a Portland cement (PC) paste was used to reduce the porosity of a BFS. This PC treated BFS (called BFS-C) was then used in an HMA to replace the coarse fraction of a natural aggregate. Marshall, Indirect Tensile Strength (ITS), resilient modulus and Cantabro tests were then carried out on different HMA mixtures that included BFS-C. Using BFS-C, HMA’s resistance under monotonic loading, stiffness under cyclic loading, and resistance to moisture damage increased remarkably. In addition, the Cantabro abrasion resistance of BFS-C improved was better than that of the HMA mixture produced with untreated BFS.

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Modeling Mechanical Properties of Cement Asphalt Emulsion Mortar with Different Asphalt to Cement Ratios and Temperatures

Cited by 56 publications

References 30 publications

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Adhesion Improvement between RAP and Emulsified Asphalt by Modifying the Surface Characteristics of RAP

Evaluation of Hot-Mix Asphalt Containing Portland Cement Treated Blast Furnace Slag

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