Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Paved Shoulder Problem - Stevenson Expressway
Premature shoulder failures manifested by heaving, longitudinal and transverse cracking, area distress, and separation of pavement and shoulder on I-55 near Chicago were investigated. Shoulders on full width (and one trenched) bases 6 ins. thick were studied over a 16 1/2 mile section of 6 lane divided highway built in 1964. Most of the road is on an embankment composed of fine grained, swelling, impermeable, frost susceptible A-6 and A-7-6 soils. Ten-foot wide shoulders were built adjacent to the outside and the median lanes. The conditions of shoulders composed of cement-aggregate mixture (CAM), or pozzolan-aggregate (PAM), or bituminous (BAM) bases and covered with 2 1/2-in. of bit. concrete were compared. After a year, heaving of 1-in. was not infrequent, laboratory and field tests indicated that surface water containing deicing salt was the suspected cause of damage. (BPR Abstract)
Paved Shoulder Problem - Stevenson Expressway
Premature shoulder failures manifested by heaving, longitudinal and transverse cracking, area distress, and separation of pavement and shoulder on I-55 near Chicago were investigated. Shoulders on full width (and one trenched) bases 6 ins. thick were studied over a 16 1/2 mile section of 6 lane divided highway built in 1964. Most of the road is on an embankment composed of fine grained, swelling, impermeable, frost susceptible A-6 and A-7-6 soils. Ten-foot wide shoulders were built adjacent to the outside and the median lanes. The conditions of shoulders composed of cement-aggregate mixture (CAM), or pozzolan-aggregate (PAM), or bituminous (BAM) bases and covered with 2 1/2-in. of bit. concrete were compared. After a year, heaving of 1-in. was not infrequent, laboratory and field tests indicated that surface water containing deicing salt was the suspected cause of damage. (BPR Abstract)
Paved Shoulder Problem - Stevenson Expressway
1967
64 pages
Report
Keine Angabe
Englisch
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