Preparation and Properties of Silicon-Modified Epoxy Grouting Material for Repairing Microcracks

Wang, Chaohui; Zhang, Dan; Chen, Haoyu; Zhang, Haijiao; Xiao, Xudang; Liu, Zhisheng

doi:10.1061/(asce)mt.1943-5533.0004118

Cited by 17 publications

(2 citation statements)

References 20 publications

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“…In this case, the filling space is the mining-induced fractures, which are far beyond the millimeter-scale filling space used in fractured rock injection. Meanwhile, the filling slurry used in the field of fracture body injection is usually a cement slurry or a chemical slurry [29][30][31]. Generally, its purpose is to increase the groutability and diffusivity of the slurry, but the modification cost is higher [32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Diffusion Radius of Modified Slurry Used in Longwall Overburden Isolated Grouting

Xuan

Zhang

et al. 2023

Geofluids

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The slurry diffusion radius is an important parameter in grouting engineering. In some cases, injection into partial overburden is needed in grouting engineering, and it is thus critical to control the slurry diffusion so as to reduce unnecessary grout take. In an effort to solve such issues in longwall overburden grouting, we proposed the addition of cement as a means of modifying fly ash slurry in order to reduce grout diffusion and grout take. The characteristics of the modified slurry were determined under different water-ash ratios and cement-blending ratios. The cement-blending ratio was found to have a small effect on the density of the slurry but a significant effect on the slurry’s precipitation rate and viscosity. The slurry diffusion experimental system was established to study the diffusion radius and consolidation. Results for both the fly ash slurry and the modified slurry revealed a circular diffusion pattern centered around the grouting borehole. The diffusion radius of the modified slurry made with 10% cement was 19.4% lower than that of the fly ash slurry, but its solidification thickness appeared to increase. The modified slurry diffusion had a two-stage effect: a “stability control stage” and a “consolidation control stage.” In the consolidation control stage, the diffusion radius of the modified slurry was smaller than that of the fly ash slurry, and this stage was the key to control the diffusion radius of the slurry. Field trials were conducted based on the results of the study, and grout take was reduced effectively. This research provides a theoretical basis for slurry diffusion radius control in longwall grouting.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Diffusion Radius of Modified Slurry Used in Longwall Overburden Isolated Grouting

Xuan

Zhang

et al. 2023

Geofluids

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“…However, the increase in traffic volume and vehicle axle load has led to the increase in road rutting, congestion, and other diseases, which has seriously damaged the service performance and service life of China's highway [1]. It is the transportation industry current that promotes the application of new technologies to improve the quality, durability, and environmental protection of asphalt roads [2][3][4]. On one hand, high modulus asphalt has excellent mechanical properties, high-temperature properties, and fatigue resistance.…”

Section: Introductionmentioning

confidence: 99%

Classification of Performance Grades of High Modulus Asphalt and Its Mixture: Taking China as an Example

Zhou

Duan

Gao³

et al. 2022

Advances in Materials Science and Engineering

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With the increase in traffic volume and axle load, the requirement of road quality is continuously improving, and high modulus asphalt has attracted the attention of researchers due to its excellent road service performance and economic benefits. In order to further improve the durability and use quality of Chinese roads, realize the scientific evaluation of the performance of high modulus asphalt and its mixture, and further promote the development of high modulus asphalt technology in China, the performance indexes of high modulus asphalt and its mixture in China were comprehensively investigated. The differences in high- and low-temperature performance of matrix asphalt, basic modified high modulus asphalt, and composite modified high modulus asphalt were compared and evaluated. Based on the results of mathematical statistics and the relevant specifications of high modulus asphalt in China, the performance grades of high modulus asphalt and its mixture were proposed. The results showed that compared with the basic asphalt, the softening points of the basic modified high modulus asphalt and the composite modified high modulus asphalt were increased by 18.76% and 82.89%, respectively, and the rutting factors were increased by 2 and 9 times, respectively, but the improvement effect of the low-temperature performance of the high modulus asphalt was not obvious. Based on the data statistics node and relevant Chinese regulations, high modulus asphalt and its mixtures were divided into four grades: excellent, good, fair, and poor, aiming to provide scientific suggestions for the wide application of high modulus asphalt.

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Evolution characteristics of the surface texture of the wearing course on asphalt pavement based on accelerated pavement polishing

Zhu

Zhang

et al. 2022

Construction and Building Materials

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Preparation and Properties of Silicon-Modified Epoxy Grouting Material for Repairing Microcracks

Cited by 17 publications

References 20 publications

Experimental Study on the Diffusion Radius of Modified Slurry Used in Longwall Overburden Isolated Grouting

Experimental Study on the Diffusion Radius of Modified Slurry Used in Longwall Overburden Isolated Grouting

Classification of Performance Grades of High Modulus Asphalt and Its Mixture: Taking China as an Example

Evolution characteristics of the surface texture of the wearing course on asphalt pavement based on accelerated pavement polishing

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