The Performance Analysis of Semi-Flexible Pavement by the Volume Parameter of Matrix Asphalt Mixture

Ding, Qing Jun; Sun, Zhigang; Fan, Saijun; Huang, Shao Long

doi:10.4028/www.scientific.net/amr.168-170.351

Cited by 32 publications

(16 citation statements)

References 4 publications

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“…The slurry has high fluidity and is able to penetrate the voids in the open-graded asphalt mix. The fast curing cement slurry locks the asphalt mix in a fixed structure, which is resistant to deformation, abrasion and attack by fuel and chemicals (Ding et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Hou

Huang

2015

International Journal of Pavement Engineering

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To further understand engineering properties of grouted macadam composite materials (GMCM) used as a surfacing layer in pavement, the mechanical properties and durability characteristics of GMCM were evaluated, and the relevant strength mechanisms were investigated at the micro level. Results indicate that GMCM has better high-temperature stability, fatigue performance and moisture stability than that of conventional asphalt mix, while it shows an acceptable decrease in lowtemperature crack resistance due to the relative brittleness of hardened cement paste. The hardened cement paste also generates a spatial network crystalline lattice in asphalt mix skeleton to form a three-dimensional integral coagulationcrystalloid structure. This facilitates the asphalt mix skeleton and hardened cement paste to bear loads in unison and increase durability of the GMCM. Further, the fibre-like hydrated products of fresh cement slurry on the bitumen film surface increase the interfacial strength between bitumen and hardened cement paste due to toughening and bridging effects, which plays an important role to enhance mechanical properties and durability of GMCM. Finally, GMCM strength is from the internal friction of asphalt mix skeleton, the network structure of hardened cement paste and the adhesion between porous asphalt mix and hardened cement paste. It is concluded that GMCM can better meet the requirements of mechanical properties and durability characteristics than the conventional asphalt mix.

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Section: Introductionmentioning

confidence: 99%

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Hou

Huang

2015

International Journal of Pavement Engineering

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“…Pei et al [6,7] determined that the cement slurry was more suitable as a grouting material by comparing the fluidity, strength and drying shrinkage of cement slurry and cement mortar, and then pouring the two grouting materials into the asphalt mixture for performance evaluation. Ding et al [8] analyzed the performance of semi-flexible pavement in the volume parameters of matrix asphalt mixture, and found that the high-low temperature stability of semi-flexible pavement materials was superior to ordinary asphalt pavement materials, and the performance of the matrix asphalt mixture with more air voids was better. At the same time, some scholars improved the performance of grouting materials by using additives.…”

Section: Introductionmentioning

confidence: 99%

The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture

et al. 2019

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Lowering the temperature of the road surface is one efficient way to alleviate the urban heat island effect. Therefore water-retaining asphalt mixture was produced by adding super absorbent polymer (SAP) containing cement mortar to the porous asphalt mixture. In this study, the water absorption capacity, mechanical strength and fluidity of the cured water-retaining mortar were investigated to determine the optimum SAP dosage in water-retaining mortar. Furthermore, the microstructure of the hardened water-retaining mortar was studied using scanning electron microscopy (SEM) to determine the morphology and distribution of SAP in the final product, which may help to understand the influence of SAP on water retention performance and decipher its underlying mechanism. Compared to the raw porous asphalt mixture, the water-retaining asphalt mixture showed good moisture susceptibility (retained stability (RS) ≥ 88.2%, tensile strength ratio (TSR) ≥ 81.8%), good rutting resistance (9336–10,552 times/mm) and low temperature crack resistance (3383–3621 MPa), as well as significant cooling effects (10–12 °C). The results illustrate that the prepared SAP water-retaining asphalt mixture has good potential in reducing dust and enhancing road performance.

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“…Semi-flexible pavement (SFP) material is a kind of pavement material which is composed of a special cement mortar infused in the large voids of an open-graded matrix asphalt mixture [1,2]. Its high temperature stability is better than that of asphalt pavement, and it has superior deformation resistance, water damage resistance, and skid resistance.…”

Section: Introductionmentioning

confidence: 99%

Study of the Self-Healing Performance of Semi-Flexible Pavement Materials Grouted with Engineered Cementitious Composites Mortar based on a Non-Standard Test

Cai

Huang

2019

Materials

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Semi-flexible pavement (SFP) materials, with their characteristics of good high temperature stability, strong durability, and lower cost, are suitable for heavy-duty roads, but their cracking problem has hindered the development and popularization of this kind of pavement to a certain extent. In this study, engineered cementitious composites (ECC) were used to form ECC-SFP materials. The self-healing properties of ECC-SFP materials with three kinds of voids of matrix asphalt mixtures were studied. The test results showed that the fluidity and strength of the ECC mortars met the specification requirements when the water–cement ratio was 0.23 and the ECC fiber dosage was 1–2%. The flexural strength of ECC mortar is better than that of ordinary mortar. The higher the ECC fiber dosage, the higher the flexural strength. Increasing the void of the matrix asphalt mixture and the amount of ECC mortar increased the toughness of the ECC-SFP material, which was seen as an increase of the flow value. Curing conditions are key factor affecting the self-healing properties of ECC mortar and ECC-SFP materials. The self-healing effect of materials in 60 °C water is the best. When an ECC fiber dosage of 1% was used, the HImor of ECC mortar and HImix of ECC-SFP material were 27.5% and 24.8%, respectively. With the addition of ECC material, ECC-SFP material achieved a certain degree of self-healing, but this still needs to be further optimized. Studies of grouting process optimization and increasing the ECC fiber dosage are feasible directions to explore in order to improve the self-healing properties of ECC-SFP materials in the future.

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The Performance Analysis of Semi-Flexible Pavement by the Volume Parameter of Matrix Asphalt Mixture

Cited by 32 publications

References 4 publications

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

Investigation into engineering properties and strength mechanism of grouted macadam composite materials

The Performance of Super Absorbent Polymer (SAP) Water-Retaining Asphalt Mixture

Study of the Self-Healing Performance of Semi-Flexible Pavement Materials Grouted with Engineered Cementitious Composites Mortar based on a Non-Standard Test

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