Utilization of porcelain insulator waste as coarse aggregate for the development of artificial coral reefs | |
| Author | Chayut Sansabay |
| Call Number | AIT Thesis no.EV-25-03 |
| Subject(s) | Electric insulators and insulation--Porcelain Artificial reefs--Thailand |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | The advancement of the power industry has led to a continuing increase in waste generated by the power transmission system. For instance, a case study in Thailand revealed a project aimed at converting the overhead power transmission system to underground, leading to the generation of over 100 tons of waste electrical insulators. This presents a management challenge because of restricted storage and disposal options. Consequently, transforming these porcelain electrical insulators into new products to enhance value presents a sustainable approach, minimizing waste and contributing to the alleviation of environmental issues. This research aimed to investigate the technical viability of transforming waste porcelain electrical insulators into coarse aggregates for use in artificial reef concrete. The crushed porcelain insulator waste was incorporated into the concrete to substitute for natural stones and combined with Garment Fiber Reinforced Concrete (GFRC) to improve flexibility in a double-layer concrete structure. The initial layer was referred to as the GFRC layer which was poured using a mortar blended with nylon fabric woven into a mesh. The ratio of cement to sand was 1:2.75, the fabric to cement ratio was 0.2. For the second layer, it is called the coating layer. The mixture consists of concrete with a cement : sand ratio of 1:2, while the proportion of crushed porcelain insulator to cement is adjusted to four different levels: 1.5, 1.6, 1.75, 2, 4 and 4.8 part Subsequently, the concrete blocks undergo performance tests, which include compressive strength and flexural strength test, density and porosity, leachability tests for microfibers. For the best condition of the study, C1.6 was found to have compressive and flexural strengths of 22.59±0.29 and 5.18±0.05 MPa at 28 days, respectively. For the evaluation of microfiber leaching along 408 hours, it was found that in normal seawater and acidification conditions was 378 and 459 items/m², and it was also discovered that the GFRC coating with CARM layer could reduce microfiber leaching by approximately 50%. |
| Year | 2025 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Water Resources and Environmental Engineering (DWREE) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Thammarat Koottatep; |
| Examination Committee(s) | Chongrak Polprasert;Xue, Wenchao; |
| Scholarship Donor(s) | Loom Nam Khong Pijai (Greater Mekong Subregion) Scholarships; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2025 |