A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
This study involves the exhuming of two different strengths of PVC-coated PET flexible geogrids from five different typical soils for the purpose of evaluating the amount and degree of installation damage. A series of single rib strength tests (GRI-GG1) and in-isolation junction strength tests (GRI-GG2) was performed to evaluate the strength of reduction due to the installation procedure in the study. The results of the study indicated that installation damage to a flexible geogrid is a function of grain size distribution and angularity of backfill materials, compaction effort and lift thickness, and type and weight of construction equipments. Based upon the test results, the tensile strength retained for flexible geogrid placed within fine grained soil, sandy soil, gravel with some fine soil, and crushed stone gravel are 83 % to 99 %, 85 % to 96 %, 66 % to 95 %, and 57 % to 88 %, respectively. The partial factor of safety for tensile strength due to installation damage is significantly related to soil type and varies from 1.01 to 1.70. The strength of junction retained for flexible geogrid is ranging from 71 % to 100 % for various type soils. The partial factor of safety for junction strength due to installation damage varies from 1.00 to 1.41 for different type of soils.
This study involves the exhuming of two different strengths of PVC-coated PET flexible geogrids from five different typical soils for the purpose of evaluating the amount and degree of installation damage. A series of single rib strength tests (GRI-GG1) and in-isolation junction strength tests (GRI-GG2) was performed to evaluate the strength of reduction due to the installation procedure in the study. The results of the study indicated that installation damage to a flexible geogrid is a function of grain size distribution and angularity of backfill materials, compaction effort and lift thickness, and type and weight of construction equipments. Based upon the test results, the tensile strength retained for flexible geogrid placed within fine grained soil, sandy soil, gravel with some fine soil, and crushed stone gravel are 83 % to 99 %, 85 % to 96 %, 66 % to 95 %, and 57 % to 88 %, respectively. The partial factor of safety for tensile strength due to installation damage is significantly related to soil type and varies from 1.01 to 1.70. The strength of junction retained for flexible geogrid is ranging from 71 % to 100 % for various type soils. The partial factor of safety for junction strength due to installation damage varies from 1.00 to 1.41 for different type of soils.
The study of th installation damage of flexible geogrids
Untersuchung der Montagebeschädigungen flexibler Geogitter
2000
5 Seiten, 4 Bilder, 10 Tabellen, 10 Quellen
Conference paper
English
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