详情

原文传递 SURVIVABILITY AND DURABILITY OF GEOTEXTILES BURIED IN GLENWOOD CANYON WALL.

题名：	SURVIVABILITY AND DURABILITY OF GEOTEXTILES BURIED IN GLENWOOD CANYON WALL.
作者：	Bell-JR; Barrett-RK
关键词：	GEOTEXTILES-; DURABILITY-; EXHUMED-SAMPLES; PERFORMANCE-EVALUATIONS; TENSILE-STRENGTH; NONWOVEN-TEXTILE; DAMAGES-
摘要：	Geotextiles buried for up to 11 years in a geotextile-reinforced soil retaining wall constructed in 1982 in Glenwood Canyon, Colorado, by the Colorado Department of Transportation were exhumed from the wall in 1984 and again in 1993. Survivability and durability of the geotextiles were evaluated by comparing the wide-width tensile strengths of the excavated samples to the strengths measured before construction. The geotextile-reinforced wall was built by conventional methods with a very coarse, rounded, well-graded, pit-run gravel as the backfill soil. Four nonwoven geotextiles in two weights each were included in the wall. Wide-width tensile tests were performed on 31 exhumed samples of eight specimens each, resulting in 248 tests. Sample mean strengths were compared with preconstruction mean strengths. The results showed that exhumed sample strengths were lower by 4% to 51%. The average mean strength loss was 27%. For the conditions of this wall, construction was the dominate cause of damage. Little if any degradation occurred during the 9 years between the first and second sampling. The large sizes of the cuts and abraded areas in the exhumed geotextiles made small specimen tests, such as the burst or grab tensile tests, impractical. Some conclusions were limited by the large coefficients of variation for some damaged specimen populations, which required samples of more than eight specimens for reasonable precision.
总页数：	Transportation Research Record. 1995. (1474) pp55-63 (2 Phot., 6 Fig., 4 Tab., 2 Ref.)
报告类型：	科技报告