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RISLong-Term Assessment of a Layered-Geotextile Protection Layer for Geomembranes
Publisher: American Society of Civil Engineers
Abstract: The effectiveness of layered-geotextile protection layers comprised of combinations of nonwoven needle-punched, woven slit-film, and nonwoven heat-bonded geotextiles to minimize strains in landfill geomembranes is examined. ...
Physical Response of Geomembrane Wrinkles Overlying Compacted Clay
Publisher: American Society of Civil Engineers
Abstract: The short-term physical response of a 1.5-mm-thick, high-density polyethylene geomembrane with an artificially formed wrinkle and overlying three different subgrade materials (sand and compacted clay at two initial water ...
Three‐Dimensional Analysis of Flexible Circular Culverts
Publisher: American Society of Civil Engineers
Abstract: The use of three‐dimensional elastic finite‐element analysis is investigated for shallow buried circular culverts responding to vehicle live loads. The analysis is an efficient semianalytic procedure that uses a two‐dimensional ...
Thickness and Hydraulic Performance of Geosynthetic Clay Liners Overlying a Geonet
Publisher: American Society of Civil Engineers
Abstract: Experimental results from physical testing are reported to examine the thickness and hydraulic performance of three geosynthetic clay liners (GCLs) overlying a geonet when subjected to vertical stresses (e.g., as may be ...
Short-Term Local Tensile Strains in HDPE Heap Leach Geomembranes from Coarse Overliner Materials
Publisher: American Society of Civil Engineers
Abstract: Local tensile strains in a 1.5-mm-thick high-density polyethylene (HDPE) geomembrane induced from coarse overliner soil materials intended to simulate the physical conditions at the base of a heap leach mineral extraction ...
Hydraulic Performance of Overlapped Geosynthetic Clay Liner Seams Requiring Field-Applied Supplemental Bentonite
Publisher: American Society of Civil Engineers
Laboratory Testing to Examine Deformations and Moments in Fiber-Reinforced Cement Pipe
Publisher: American Society of Civil Engineers
Abstract: Two 381 mm (15 in. nominal) diameter fiber reinforced cement pipes have been tested under embankment loading conditions to study pipe response in both low stiffness, fine grained backfill, and a high stiffness graded ...
Axial Stress-Strain Response of HDPE from Whole Pipes and Coupons
Publisher: American Society of Civil Engineers
Abstract: High-density polyethylene (HDPE) pipes are subjected to tensile stresses and strains in the axial direction during and after a pulled-in-place installation by horizontal directional drilling or pipe bursting. During these ...
Effectiveness of Viscoelastic Models for Prediction of Tensile Axial Strains during Cyclic Loading of High-Density Polyethylene Pipe
Publisher: American Society of Civil Engineers
Abstract: High-density polyethylene (HDPE) pipelines are commonly installed using horizontal directional drilling (HDD), a trenchless construction technique used to replace or expand underground pipelines which generates cyclic axial ...
Estimating Liquefaction-Induced Lateral Displacements Using the Standard Penetration Test or Cone Penetration Test
Publisher: American Society of Civil Engineers
Abstract: A semiempirical approach to estimate liquefaction-induced lateral displacements using standard penetration test (SPT) or cone penetration test (CPT) data is presented. The approach combines available SPT- and CPT-based ...