| Title |
Analysis of Applicability of Rapid Hardening Composite Mat to Railway Sites |
| Authors |
장성민(Jang, Seong Min) ; 유현상(Yoo, Hyun Sang) ; 오동욱(Oh, Dong Wook) ; 반즈락츠가랍(Batchimeg, Banzragchgarav) ; 정혁상(Jung, Hyuk Sang) |
| DOI |
https://doi.org/10.12652/Ksce.2024.44.1.0109 |
| Keywords |
초속경 복합매트; 현장 적용; 접지압; 난연 성능 Rapid hardening composite mat; Field application; Contact pressure; Heat release rate |
| Abstract |
The Rapid Hardening Composite Mat (RHCM) is a product that improves the initial strength development speed of conventional Geosynthetic Cementitious Composite Mats (GCCM). It offers the advantage of quickly securing sufficient strength in railway slopes with insufficient formation level, and provides benefits such as preventing slope erosion and inhibiting vegetation growth. In this study, an analysis of the practical applicability of RHCM in railway settings was conducted through experimentation. The on-site applicability was assessed by categorizing it into fire resistance, durability, and stability, and conducting combustibility test, ground contact pressure test, and daily displacement analyses. In the case of South Korea, where a significant portion of the territory is composed of forested areas, the prevention of slope fires is imperative. To analyze the fire resistance of RHCM, combustibility tests were conducted as an essential measure. Durability was assessed through ground contact pressure tests to analyze the deformation and potential damage of RHCM caused by the inevitable use of small to medium-sized equipment on the construction surface. Furthermore, daily displacement analysis was conducted to evaluate the structural stability by comparing and analyzing the displacement and behavior occurring during the application of RHCM with railway slope maintenance criteria. As a result of the experiments, the RHCM was analyzed to meet the criteria for heat release rate and gas toxicity. Furthermore, the ground contact pressure was observed to be consistently above 50 kPa during the curing period of 4 to 24 hours under all conditions. Additionally, the daily displacement analyzed through field site experiments ranged from -1.7 mm to 1.01 mm, confirming compliance with the criteria. |