A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Frost Heave Patterns and Optimal Design of Insulated Culverts
When a culvert is placed under a road, the presence of air at freezing temperatures in the culvert may induce differential frost conditions in pavements. Also, a differential frost heave pattern can appear when the culvert is placed in a frost-susceptible soil. In the project, computer simulations of temperature distributions and frost heave patterns around culverts were carried out, and the effects of various insulation techniques were analyzed under weather conditions representative of Minnesota winters. The pavement slope variance, which is a commonly used variable describing the roughness (or loss of serviceability) of a given pavement section profile, proved to be a valuable indicator under frost heave condition. Results indicate that culvert insulation reduces the value of the pavement slope variance throughout the freezing period: the higher the insulation thickness, the lower the resulting slope variance (or loss of serviceability).
Frost Heave Patterns and Optimal Design of Insulated Culverts
When a culvert is placed under a road, the presence of air at freezing temperatures in the culvert may induce differential frost conditions in pavements. Also, a differential frost heave pattern can appear when the culvert is placed in a frost-susceptible soil. In the project, computer simulations of temperature distributions and frost heave patterns around culverts were carried out, and the effects of various insulation techniques were analyzed under weather conditions representative of Minnesota winters. The pavement slope variance, which is a commonly used variable describing the roughness (or loss of serviceability) of a given pavement section profile, proved to be a valuable indicator under frost heave condition. Results indicate that culvert insulation reduces the value of the pavement slope variance throughout the freezing period: the higher the insulation thickness, the lower the resulting slope variance (or loss of serviceability).
Frost Heave Patterns and Optimal Design of Insulated Culverts
C. Duquennoi (author) / R. L. Sterling (author)
1991
40 pages
Report
No indication
English
Highway Engineering , Soil & Rock Mechanics , Snow, Ice, & Permafrost , Design criteria , Culverts , Thermal insulation , Frost heave , Freezing , Highway design , Drains , Frozen soils , Soil mechanics , Frost penetration , Soil pressure , Minnesota , Pavement deflections , Heat transfer , Roads , Slopes , Pavements
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