Pipe line for the water supply and/or drainage is one of the most important life lines which is usually suffered from the damage due to exterior load induced deformation and due to the lack of support resistance provided by the surrounding soil. GFRP (Glass Fiber Reinforced Polymer Plastic) pipes are generally thinner, lighter, but stronger than the existing concrete or steel pipes, and it is excellent in stiffness/strength per unit weight. In this study, we present the result of field test for buried RPMP (Reinforced Polymer Mortar Pipe) and RTRP (Reinforced Thermosetting Resin Pipe) pipes with 2,400mm diameter. The vertical and horizontal ring deflections are measured for 387 days. The ring deflection of RPMP and RTRP measured by the field test is compared with the ring deflection limitation (5%) according to ASTM D 2412.

ABSTRACT
 1. 서 론
 2. GRP관의 특성
 3. 지중매설실험
 4. 결론
 References

• 박준석(홍익대학교 과학기술연구소) | Park Joon-Seok
• 김선희(홍익대학교 과학기술연구소) | Kim Sun-Hee
• 박정환(홍익대학교 토목공학과) | Park Jung-Hwan
• 윤순종(홍익대학교 토목공학과) | Yoon Soon-Jong