TRIS Online Record

Printable View

Title	FIELD AND LABORATORY PULLOUT RESISTANCE TESTS FOR FOUR SOIL REINFORCEMENT SYSTEMS. FINAL REPORT
Accession No	00639889
Authors	Ehsan, J
Corp. Authors / Publisher	California Department of Transportation ; Federal Highway Administration
Publication Date	19930700
Description	138 p.; Appendices(4); Figures(18); Photos(21); References(7); Tables(6)
Languages	English
Abstract	This report presents the results of field and laboratory testing of several configurations of earth reinforcing elements used in retaining wall systems. Reinforcement elements were placed in zones of sand, gravel, and clay within a specially constructed embankment in the field and tested for pullout resistance. The same elements were tested in Translab's large scale pull box under similar conditions. During testing, horizontal forces and displacements were recorded at regular time intervals under constant overburden pressures. Pullout resistance vs. displacement curves showed that lab tests were characterized by high initial pullout resistance which decreased with continued displacement while field tests showed low initial pullout resistance which increased with continued displacement. Sand and gravel provided similar pullout resistances which were both higher than clay. "C" channels with tee configurations and corrosion resistant elements produced higher pullout resistances than other elements. No correlation was found between overburden and pullout resistance in the field tests. Field tests results were generally inconsistent making pullout behavior difficult to characterize. Lab test results were high compared to field and should not be used as an estimate of field pullout resistance within the first 2 in. of displacement.
TRT Terms	Clay ; Dislocation (Geology) ; Embankments ; Field tests ; Gravel ; Laboratory tests ; Overburdens ; Pull out test ; Reinforcement (Engineering) ; Retaining walls ; Sand
Other Terms	Displacement; Pullout resistance; Reinforcement
Subject Areas	H63 MECHANICS (EARTH MASS); I42 Soil Mechanics
Contract Number	F85TL03
Report Number	FHWA/CA/TL-94/04; Rept No. 65329-632464
Availability	National Technical Information Service Order Number: PB95-262986
TRIS Files	HRIS
Database	TRIS Online

TRIS is a bibliographic database funded by sponsors of the Transportation Research Board (TRB), primarily the state departments of transportation and selected federal transportation agencies. TRIS Online is hosted by the National Transportation Library under a cooperative agreement between the Bureau of Transportation Statistics and TRB.