Crack resistance of waste cooking oil modified cement stabilized macadam

Li, Xuelian; Lv, Xinchao; Wang, Wenqiang; Liu, Jie; Yu, Miao; You, Zhanping

doi:10.1016/j.jclepro.2019.118525

Cited by 20 publications

(2 citation statements)

References 18 publications

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“…At present, cement curing agents are mainly used for mortar and concrete [24,25,[27][28][29][30], and there are few studies on the curing of cement-stabilized gravel in desert environments. The air humidity in desert areas is generally 3% to 15%, and the average annual rainfall in most areas is less than 50 mL, resulting in drought throughout the year.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance of Cement-Stabilized Base External Curing Agent in a Desert Environment

Wei,

He,

et al. 2024

Buildings

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To explore and deal with the difficulty in curing cement-stabilized bases in desert environments, curing agents were prepared to enhance the curing effect on the base in this research. The composite curing agent was prepared through orthogonal experiments and the durability of the curing agent coating were studied by simulating a desert environment. Subsequently, the curing effect on the performance of bases was analyzed. Finally, the hydration degree of cement was studied via scanning electron microscope (SEM), thermogravimetric analysis (TG), and X-ray diffraction analysis (XRD), and the curing mechanism of the curing agent was explored. The results show that the composite (paraffin emulsion is the main component of the film, vinyl acetate-ethylene copolymer dosage is 20%, ethanol ester-12 dosage is 10%, and sodium silicate dosage is 18%) could effectively improve the water-retention performance (water-loss ratio: 2.36%) and mechanical properties of the specimen (7 d compressive strength: 7.48 MPa; 7 d indirect tensile strength: 0.70 MPa). The dry shrinkage coefficient of the specimen with composite curing agent was reduced by 116.26% at 28 days. The compressive strength of dry and wet freeze could reach 7.48 MPa and 6.88 MPa, respectively. The durability of the curing agent-coated base met the requirements of pavement performance in desert areas. The results of XRD, TG, and SEM indicated that the curing agent promoted hydration. In addition, the number of C-S-H gel and AFt crystals significantly increased. The curing difficulty of road bases in desert areas could be reduced effectively through the application presented in this study, which contributes to the conservation of natural and human resources.

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Section: Introductionmentioning

confidence: 99%

Preparation and Performance of Cement-Stabilized Base External Curing Agent in a Desert Environment

Wei,

He,

et al. 2024

Buildings

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“…Steel fibers of different sizes can simultaneously increase the strength and toughness of the material under a specific mixing ratio, but they fail to show obvious strain hardening characteristics [9]. Selim A compared the pervaporation performance of single-mesh and double-mesh PVA fibers with operating temperature as a variable [10]; Laura studied the effect of PAA-coated magnetic nanoparticles on the performance of PVA-based hydrogels developed as environmental remediation devices [11]; Pouran studied the effect of zirconia disc delayed light curing cement on the microhardness and fracture toughness [12]; Xie T established a local interaction model of the bending behavior of PVA fiber concrete beams and GFRP steel bars [13]; J Yu conducted experiments on the fluidity and mechanical properties of steel-polyvinyl alcohol fiber concrete [14]; Khanikar T conducted research on the subject of PANI-PVA composite film-coated fiber probe as a stable and highly sensitive pH sensor [15]; Ahmad H conducted research on the application of nano MoWS_2-rGO/PVA film as an all-fiber pulse amplitude modulator in the O band [16]; Luming studied the influence of collagen hydrolysate components on the preparation of collagen/PVA composite fibers [17]; Li X researched the crack resistance of cement stabilized crushed stone through experiments [18]; Zhao Y studied the polyvinyl alcohol fiber-reinforced cement-based composite material (PVA-ECC) Deterioration of behavior and microstructure changes after exposure to high temperatures [19]. It can be seen that the research on the characteristics of PVA fiber cement-based composites has gradually matured.…”

Section: Introductionmentioning

confidence: 99%

Crack Resistance and Toughening Mechanism of Nano-SiO2 Reinforced PVA Fiber Cement-based Composites in Steel Bridge Engineering

2022

IJETC

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With the development of steel bridge engineering science, PVA fiber cement-based composite materials are gradually being explored and applied. Because of its high ductility and toughness, it has received extensive attention from academia and industry. Cement-based composite materials are essentially made of cement-related raw materials, which are mixed with various other materials to form composite materials. Incorporating Nano-SiO 2 into it can effectively improve the structural performance and durability of cement-based composite materials. Therefore, the purpose of this paper is to study the crack resistance and toughness mechanism of Nano-SiO 2 reinforced PVA fiber cement-based composites in steel bridge engineering. This paper first determined the design plan of the mix ratio of the Nano-SiO 2 PVA fiber cement-based composite material, and then used the composite beam composed of PVA fiber concrete and existing concrete as the experimental object. The test data shows that when the amount of hydrophilic nanopowder SiO 2 reaches 1%, the compressive strength of the mortar at the second and third day of age is increased. At this time, the higher the content of hydrophilic nanopowder SiO 2 , the higher its compressive and flexural strength. However, when the content is greater than 1.0%, the content of hydrophilic nano-powder SiO 2 has no great influence on the improvement of its compressive strength.

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Research on the Shrinkage Performance of Vertical Vibration Compacted Cement-Stabilized Gravel

Jiang,

Bai,

Fan

et al. 2024

Iran J Sci Technol Trans Civ Eng

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Crack resistance of waste cooking oil modified cement stabilized macadam

Cited by 20 publications

References 18 publications

Preparation and Performance of Cement-Stabilized Base External Curing Agent in a Desert Environment

Preparation and Performance of Cement-Stabilized Base External Curing Agent in a Desert Environment

Crack Resistance and Toughening Mechanism of Nano-SiO2 Reinforced PVA Fiber Cement-based Composites in Steel Bridge Engineering

Research on the Shrinkage Performance of Vertical Vibration Compacted Cement-Stabilized Gravel

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