A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Properties of Frozen Base Courses in West Texas
Transverse cracking of pavements in West Texas initiates in the base course due to volumetric contraction caused by freezing temperatures. A computer program which predicts this transverse cracking requires two material properties of the frozen base course to be used as input data. (See Research Report 18-4F, 'Thermal Pavement Cracking in West Texas.') The two properties are the elastic modulus and the tensile strength. A test program was conducted to determine how these properties are affected by such variables as suction, dry density, water content, and the number of freeze-thaw cycles the base course has experienced. An effective method of predicting both the elastic modulus and the tensile strength is presented in this report. It is now possible to determine these properties from the climatically-controlled values of suction and freeze-thaw cycles and the construction-controlled value of dry density. With this information, the computer program can be used to improve the design of pavements in West Texas. An appendix of this report gives a detailed description of the measurement of suction with psychrometers. Another appendix gives all of the measured test data.
Properties of Frozen Base Courses in West Texas
Transverse cracking of pavements in West Texas initiates in the base course due to volumetric contraction caused by freezing temperatures. A computer program which predicts this transverse cracking requires two material properties of the frozen base course to be used as input data. (See Research Report 18-4F, 'Thermal Pavement Cracking in West Texas.') The two properties are the elastic modulus and the tensile strength. A test program was conducted to determine how these properties are affected by such variables as suction, dry density, water content, and the number of freeze-thaw cycles the base course has experienced. An effective method of predicting both the elastic modulus and the tensile strength is presented in this report. It is now possible to determine these properties from the climatically-controlled values of suction and freeze-thaw cycles and the construction-controlled value of dry density. With this information, the computer program can be used to improve the design of pavements in West Texas. An appendix of this report gives a detailed description of the measurement of suction with psychrometers. Another appendix gives all of the measured test data.
Properties of Frozen Base Courses in West Texas
W. R. Campbell (author) / R. L. Lytton (author)
1979
98 pages
Report
No indication
English
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