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A platform for research: civil engineering, architecture and urbanism
Plate load tests on geogrid-reinforced expanded shale lightweight aggregate
The experimental study reported in this paper is part of an ongoing research on the geotechnical properties of expanded shale lightweight aggregate. The scope of the experimental program reported in this paper was to perform plate load test on beds of lightweight aggregate with or without geogridreinforcement. To achieve optimal benefit from the reinforcement placed in lightweight aggregate, it is desirable to have the width of geogrid reinforcement 4 times the width of a square or diameter of a circular footing. The geogrid layers should be located within the critical depth, which is equal to the width of the footing. A stiffer geogrid is less beneficial at small displacemet (delta < 6 mm) than a more flexible geogrid. The results of laboratory research indicate that the expanded shale lightweight aggregates are prone to minor particle breakage. However, in the field situations, more particle breakage may occur if heavy compaction equipment is used. The effect of substantial particle breakage on the subgrade modulus values needs to be investigated by performing plate load tests in the field.
Plate load tests on geogrid-reinforced expanded shale lightweight aggregate
The experimental study reported in this paper is part of an ongoing research on the geotechnical properties of expanded shale lightweight aggregate. The scope of the experimental program reported in this paper was to perform plate load test on beds of lightweight aggregate with or without geogridreinforcement. To achieve optimal benefit from the reinforcement placed in lightweight aggregate, it is desirable to have the width of geogrid reinforcement 4 times the width of a square or diameter of a circular footing. The geogrid layers should be located within the critical depth, which is equal to the width of the footing. A stiffer geogrid is less beneficial at small displacemet (delta < 6 mm) than a more flexible geogrid. The results of laboratory research indicate that the expanded shale lightweight aggregates are prone to minor particle breakage. However, in the field situations, more particle breakage may occur if heavy compaction equipment is used. The effect of substantial particle breakage on the subgrade modulus values needs to be investigated by performing plate load tests in the field.
Plate load tests on geogrid-reinforced expanded shale lightweight aggregate
Plattenbelastungsprüfungen von Geogitter-verfestigtem, leichten Schüttgut aus Blähschiefer
DeMerchant, M.R. (author) / Valsangkar, A.J. (author) / Schriver, A.B. (author)
Geotextiles and Geomembranes ; 20 ; 173-190
2002
18 Seiten, 9 Bilder, 4 Tabellen, 24 Quellen
Article (Journal)
English
Plate load tests on geogrid-reinforced expanded shale lightweight aggregate
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