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Title:

Effects of Shrinkage and Swelling Behavior of High Plastic Clay on the Performance of a Highway Slope Reinforced with Recycled Plastic Pin

Accession Number:

01551054

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

The Recycled Plastic Pin (RPP) is made from recycled plastics and waste materials (i.e., polymer, sawdust, fly ash etc.). It is a lightweight material and is less susceptible to chemical and biological degradation than the alternative reinforcing element. RPPs are driven into the slope face and provide additional resistance along the slip surface which increase the factor of safety against shallow slope failure. During the current study, a field investigation was conducted to study the performance of a highway slope, subjected to shrinkage and swelling behavior, when reinforced with RPPs. The slope was located over US 287 near the St. Paul overpass in Midlothian, Texas. Surficial movement had taken place over the slope, resulting in cracks over the shoulder, near the bridge abutment. Three 50 ft. sections over the slope were reinforced, using RPPs. After RPP installation, the slope was instrumented, using inclinometers, rain gauges, moisture sensors and water potential probes, and was monitored periodically. The performance monitoring results indicated that the shrinkage cracks created a loss-of-support condition during the dry summer, which reduced the resistance of RPPs. On the other hand, the support condition of the RPPs was restored during the wet period, due to the swelling of the high plastic clay soil, which enhanced the performance of the slope. Additionally, the load mobilization had taken place within the first year after construction, which may have reduced the effect of shrinkage and swelling behavior on the performance of slope.

Supplemental Notes:

This paper was sponsored by TRB committee AFP10 Engineering Geology. Alternate title: Efect of Shrinkage and Swelling Behavior of High-Plastic Clay on Performance of Highway Slope Reinforced with Recycled Plastic Pin.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-5423

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Khan, Mohammad Sadik
Hossain, MD Sahadat

Pagination:

14p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Geographic Terms:

Midlothian (Texas)

Subject Areas:

Geotechnology; Highways; I42: Soil Mechanics; I51: Earthworks and Soil Drainage

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-5423

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 1:49PM