Preparation of a heat insulation bonding layer for roads and its heat insulation effect

Liu, Luqing; Wang, Chaohui; Liang, Qing

doi:10.1016/j.jclepro.2022.132828

Cited by 11 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Referring to the JTG/T F20-2015 [18], the gradation of the mix was C-B-3 and the grade curve is shown in Figure 1. The maximum dry density of cement-stabilized macadam is 2.28 g/cm 3 , and the optimum moisture content is 4.75% (Table 1).…”

Section: Methodsmentioning

confidence: 99%

“…2 Epibromohydrin solution was added dropwise and the solution pH was adjusted to be greater than 11 by adding the appropriate amount of NaOH. The reaction was left at room temperature for 5 h. 3 The fibers were filtered, washed, and dried.…”

Section: Fiber Surface Modificationmentioning

confidence: 99%

“…Cement-stabilized macadam has been widely used in pavement bases, due to its high bearing capacity and stiffness. Its anti-cracking, anti-deformation and durability directly affect the service life of the road [1][2][3]. Long-term research and engineering practice have found that cement-stabilized macadam is prone to cracking due to the lack of resistance to dry shrinkage, temperature shrinkage, and fatigue resistance, resulting in reflection cracks in the asphalt surface layer, which significantly affect the quality of road use.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Durability Performance of PVA Fiber Cement-Stabilized Macadam

Tan

Wang²,

Zheng³

et al. 2022

Sustainability

Self Cite

View full text Add to dashboard Cite

To further improve the durability of cement-stabilized macadam and guarantee the use quality and sustainability of a semi-rigid base, the current study was carried out. With the help of a dry shrinkage test, temperature shrinkage test, freeze–thaw bending test, and fatigue test, the effect of incorporating PVA fiber on the deformation characteristics of cement-stabilized macadam was analyzed, and the changes in low-temperature residual toughness of the mixture before and after modification were compared. The low-temperature toughness of PVA fiber cement-stabilized macadam was evaluated with the help of the standard toughness evaluation method. The fatigue life prediction equation of PVA fiber cement-stabilized macadam was established based on the Weibull distribution. The results showed that PVA fiber can effectively improve the deformation characteristics, low-temperature toughness, and fatigue performance of cement-stabilized macadam. The low-temperature residual flexural tensile strength and low-temperature bearing capacity were increased by 10.3% and 55.3%, respectively. The residual toughness indices were increased by 58.6%, 88.1%, and 98.3% and the residual strength index was increased by more than 100%. The fatigue life was improved by 178~368% under different stress intensity ratios. The fatigue life values obeyed the two-parameter Weibull distribution, and the correlation between the fatigue life prediction equation and the measured data was significant. The fatigue life prediction error was between 0.03 and 4.9% under different stress intensity ratios.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Fiber Surface Modificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Durability Performance of PVA Fiber Cement-Stabilized Macadam

Tan

Wang²,

Zheng³

et al. 2022

Sustainability

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, it is difficult to ensure the interlayer bonding performance due to differences in material properties and relatively weakened mechanical compatibility between the upper and lower cladding layers, as well as surface contamination of the lower cladding layer caused by milling [8,9]. The resulting interlayer disease problem has become a key factor restricting development [10], so the bonding layer materials must meet higher requirements [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Investigation on One-Component Waterborne Epoxy Emulsified Asphalt (OWEEA) Used as Bonding Material

Wu,

Song

et al. 2024

Buildings

View full text Add to dashboard Cite

Due to the issue of weakened adhesion between ultra-thin surface overlays, higher demands have been placed on bonding layer materials in practical engineering. This study proposed a method for preparing a one-component waterborne epoxy resin-modified emulsified asphalt (OWEEA) and explored the impact of different ratios on its performance. The basic physical and mechanical properties of the OWEEA, as well as its rheological characteristics, were investigated through penetration tests, softening point tests, ductility tests, tensile tests, and dynamic shear rheological tests. Pull-out tests and shear tests considering different substrates were used to evaluate the interfacial bonding performance of the OWEEA as a bonding layer material, and comparative analysis was conducted with conventional waterborne epoxy resin-modified emulsified asphalt. Based on microscopic testing and analysis, the laws of physical and chemical changes and secondary curing characteristics of the one-component waterborne epoxy emulsion (OWE) during the modification of emulsified asphalt were elucidated. The results indicated that the OWE prepared in this study significantly enhanced the tensile strength and bonding properties of emulsified asphalt. The results showed that the tensile strength, bonding strength, and shear strength of the OWEEA increased from 0.15 MPa, 0.36 MPa, and 0.35 MPa to 0.55 MPa, 1.29 MPa, and 2.01 MPa, respectively. The modification effect of the OWEEA surpassed that of conventional waterborne epoxy emulsion, albeit with a certain reduction in elongation at break, reduced from 1551% to 98%. Furthermore, the OWEEA showed a distinct secondary curing phenomenon. The results of the SEM tests showed that high temperatures accelerated the formation of the crosslinked network structure of OWE, promoting its integration with emulsified asphalt and resulting in a more uniform and dense structure, significantly enhancing bonding strength in a short period. In the actual road construction process, laying hot-mix asphalt mixtures on the bonding layer can further enhance its curing effect and improve its bonding performance.

show abstract

A comprehensive review on mechanical properties of green controlled low strength materials

Wang

Wen

et al. 2023

Construction and Building Materials

View full text Add to dashboard Cite

Preparation of a heat insulation bonding layer for roads and its heat insulation effect

Cited by 11 publications

References 17 publications

Durability Performance of PVA Fiber Cement-Stabilized Macadam

Durability Performance of PVA Fiber Cement-Stabilized Macadam

Investigation on One-Component Waterborne Epoxy Emulsified Asphalt (OWEEA) Used as Bonding Material

A comprehensive review on mechanical properties of green controlled low strength materials

Contact Info

Product

Resources

About