Effect of mass ratio of asphalt to cement on the properties of cement modified asphalt emulsion mortar

Liu, Baoju; Liang, Dong

doi:10.1016/j.conbuildmat.2016.12.137

Cited by 39 publications

(18 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CAEM has been widely used in road maintenance and rehabilitation due to the combined merits of the high mechanical properties of cement materials and the flexibility of asphalt materials, low environmental impact, and cost effectiveness (Zhong and Chen, 2002;Lu et al, 2009;Qiang et al, 2011;Doyle et al, 2013;Tian et al, 2013;Tyler et al, 2014;Ling et al, 2016;Ouyang et al, 2020). Despite the aforementioned benefits of CAEM, there is a defect that the corners cannot be fully compacted and result in a poor adhesion between new and old materials due to the poor rheological property of CAEM (Hu et al, 2009;Dołżycki et al, 2017;Liu and Liang, 2017). There will be secondary damage occurred on the repair site when it is exposed to the adverse weather such as rainfall or freezing and thawing.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, repair materials should meet the strength requirements to early open to traffic at different conditions. Studies have shown that it took a long time for repair materials to reach their full strength (Qiang et al, 2011;Fang et al, 2016;Liu and Liang, 2017;Du, 2018). Therefore, in order to improve the strength of the road and early open to traffic, the properties of the new CAEM must satisfy the requirements of good flowability and high earlyage strength.…”

Section: Introductionmentioning

confidence: 99%

“…However, excessive contents of cement may cause cracks in the pavement. Liu and Liang (2017) has reported that the flow time increased with the increase of asphalt to cement ratio (A/C), while the compressive strength, and 28 days elastic modulus showed the opposite trend. Lin et al (2015) has studied the mechanism of early strength of CAEM and concluded that cement played a major role in the first 3-day of early strength, while emulsified asphalt played the predominant role in both early and final strength.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability

Tian

Yan

et al. 2020

Front. Mater.

View full text Add to dashboard Cite

Cement asphalt emulsion mixture (CAEM) presents low early-age strength and poor flowability, which limits its application range at a certain degree. In this paper, CAEM with high early-age strength and flowability was proposed. The flowability, compressive strength, flexural strength of CAEM at different periods and 28 days elastic modulus of CAEM were investigated. In addition, evolution of composition and microstructure of CAEM was analyzed by X-ray diffraction (XRD), scanning electronic microscope (SEM), and mercury intrusion porosimetry (MIP). The results indicated that the compressive strength of CAEM can be enhanced quickly in several hours. It could achieve 17-24 MPa at 6 h and almost reached 79-90% of the 28 days compressive strength. SEM and XRD analysis found that the hydration products in CAEM at different periods were obviously different. The hydration products of 2 h filled the micro pores of the mixture. After 28 days, the hydration products were connected to each other, resulting in a denser structure. The results of MIP analysis showed that the pore cumulative volume of CAEM was similar for 2 h and 28 days samples. These results testified that CAEM had high early-age strength.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability

Tian

Yan

et al. 2020

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…Wang et al studied the improvement of pavement performance of different flexible latex materials for SFPM, which indicated that the pavement performance of SFPCM was significantly improved by adding polymers [17]. Liu analyzed the influence of the phase change material on the road performance of semi-flexible pavement materials, which indicated that the phase change material can enhance the low temperature crack resistance of semi-flexible pavement materials, but reduce its high temperature stability and water stability [18].In this study, the cement-asphalt interface is optimized by adding an interface optimizer to the cement mortar, and the cement test is used to determine the optimum blending amount of various interface optimizers. Based on laboratory experiments, the SFPCM with different interface optimizers were prepared to analyze the influence of different interface optimizers on the microstructure and macroscopic properties of semi-flexible materials.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

High-Performance Semi-Flexible Pavement Coating Material with the Microscopic Interface Optimization

Jiang

Xue

et al. 2020

Coatings

View full text Add to dashboard Cite

This paper aims to optimize the asphalt-mortar interface characteristics of semi-flexible pavement coating material (SFPCM), three types of the interface modifiers, namely the silane coupling agent, carboxylated styrene-butadiene latex, and cationic emulsified asphalt, are selected to add into the cement mortar to optimize the asphalt-mortar interface. The microscopic characteristics of the asphalt-mortar interface and the macroscopic pavement performance of the SFPCM after the interface optimization are investigated to reveal the effect of interface modifiers and determine the best formula. Results show that: (1) The dry shrinkage of the cement mortar is increased with the increased dosage of the interface modifiers, while the strength is decreased accordingly; (2) the optimum dosages of the silane coupling agent, carboxylated styrene butadiene latex, and cationic emulsified asphalt are 0.5%, 10%, and 5%, respectively; (3) the microscopic asphalt-mortar interface characteristics of the SFPCM with different interface modifiers have significant differences; (4) the SFPCM with the cationic emulsified asphalt presents the best pavement performance, particularly the high-temperature stability. These results can be attributed to improve the pavement properties of SFPCM.

show abstract

Cementitious Fillers in Cement Asphalt Emulsion Mixtures: Long-Term Performance and Microstructure

et al. 2021

View full text Add to dashboard Cite

Cement has been well documented to positively affect the early-age strength of the cement asphalt emulsion mixtures (termed as CAEM) without compromising workability. However, the long-term performance of the CAEM incorporating multiple cement combinations is not conclusive. This study explored the effect of the combined usage of ordinary portland cement (OPC) and sulfoaluminate cement (SAC) on the long-term performance and microstructural properties of a CAEM system in detail. Three tasks were conducted, including (1) designing six CAEM formulations by introducing different types (OPC and SAC) and contents (2-6 wt%) of cement; (2) evaluating the long-term performance by moisture susceptibility, frost damage, abrasion resistance, and rutting resistance; and (3) characterizing the microstructural properties by scanning electron microscopes and energy-dispersive spectrometers. The experimental results revealed that the relative dynamic elastic modulus of CAEM was increased to 69.7% when admixing 90 wt% OPC and 10 wt% SAC. The mixture incorporating 90 wt% OPC and 10 wt% SAC demonstrated excellent rutting resistance up to ~31,000 cycles/mm of dynamic stability. The improved long-term performance actually originated from the reduced voids and produced a dense microstructure. The outcomes could facilitate tailoring CEAM products with better long-term performance.

show abstract

Effect of mass ratio of asphalt to cement on the properties of cement modified asphalt emulsion mortar

Cited by 39 publications

References 12 publications

Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability

Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability

High-Performance Semi-Flexible Pavement Coating Material with the Microscopic Interface Optimization

Cementitious Fillers in Cement Asphalt Emulsion Mixtures: Long-Term Performance and Microstructure

Contact Info

Product

Resources

About