A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Limiting Strain as a Failure Criterion for Bituminous Mixtures
Experiments were conducted to measure strain at failure (limiting strain) for bituminous concretes. A secondary study was included to evaluate the possibilities of using acoustic emission techniques to detect and monitor cracking in portland cement and bituminous concretes. Parameters for the limiting strain experiment included asphalt type, aggregate gradation, temperature, and strain rate analysis of variance was used to evaluate the effect of each of the parameters and regression equations are presented that relate significant independent variables to limiting strain. The most significant parameter affecting limiting strain is temperature; strain rate and gradation do show some effects, but these are minor when compared to temperature. There was no measurable effect, in this experiment, due to asphalt type within a range which included a high and low viscosity material in each of three penetration grades (60-70, 85-100, 120-150). Acoustic emission experiments showed that this technique is effective for detecting micro-cracking long before visual observation indicates the occurrence.
Limiting Strain as a Failure Criterion for Bituminous Mixtures
Experiments were conducted to measure strain at failure (limiting strain) for bituminous concretes. A secondary study was included to evaluate the possibilities of using acoustic emission techniques to detect and monitor cracking in portland cement and bituminous concretes. Parameters for the limiting strain experiment included asphalt type, aggregate gradation, temperature, and strain rate analysis of variance was used to evaluate the effect of each of the parameters and regression equations are presented that relate significant independent variables to limiting strain. The most significant parameter affecting limiting strain is temperature; strain rate and gradation do show some effects, but these are minor when compared to temperature. There was no measurable effect, in this experiment, due to asphalt type within a range which included a high and low viscosity material in each of three penetration grades (60-70, 85-100, 120-150). Acoustic emission experiments showed that this technique is effective for detecting micro-cracking long before visual observation indicates the occurrence.
Limiting Strain as a Failure Criterion for Bituminous Mixtures
R. D. Pavlovich (author)
1975
365 pages
Report
No indication
English
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