A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Investigation of Resistance of Concrete to Cracking
Concrete mixes containing water-reducing admixtures were compared to plain concrete with respect to cracking resistance. The shrinkage of concrete was restrained by an internal steel bar. The measured strain in the bar was used to compute the stresses in the concrete up to the point of cracking. The tension induced by the restraint of drying shrinkage of the concrete ultimately caused failure by tensile cracking. Corresponding shrinkage measurements were made on unrestrained shrinkage specimens. The test procedure originally developed for this study was changed during the course of the project to overcome some apparent failure to achieve adequate bond to steel. Although the changes eliminated further bond failures, additional modifications would have to be made to improve repeatability and sensitivity of the test. A large number of tests would be required to produce statistically significant results. (Author)
Investigation of Resistance of Concrete to Cracking
Concrete mixes containing water-reducing admixtures were compared to plain concrete with respect to cracking resistance. The shrinkage of concrete was restrained by an internal steel bar. The measured strain in the bar was used to compute the stresses in the concrete up to the point of cracking. The tension induced by the restraint of drying shrinkage of the concrete ultimately caused failure by tensile cracking. Corresponding shrinkage measurements were made on unrestrained shrinkage specimens. The test procedure originally developed for this study was changed during the course of the project to overcome some apparent failure to achieve adequate bond to steel. Although the changes eliminated further bond failures, additional modifications would have to be made to improve repeatability and sensitivity of the test. A large number of tests would be required to produce statistically significant results. (Author)
Investigation of Resistance of Concrete to Cracking
D. L. Spellman (author)
1968
18 pages
Report
No indication
English
Cracking resistance of plasticized fly ash concrete
| British Library Conference Proceedings | 1999
Low Temperature Cracking Resistance of Asphalt Concrete Mixtures
| British Library Conference Proceedings | 1993