A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Insights into surface crack propagation of cement mortar with different cement fineness subjected to freezing/thawing
https://orcid.org/0000-0001-9156-6103
Graphical abstract Display Omitted
Highlights The effect of cement fineness on the crack propagation of cement mortar was investigated. Insight into a macro to micro-crack was based on changes in macro to micro-properties under F/T cycle. Microstructural and image analyses were used to explain the crack mechanism from the macro and micro perspective. Increase of resistance against cracking was due to the better performance of cement with highest fineness.
Abstract As cementitious material freezes and thaws, cracks may expand due to the weakness in the internal structure, the behavior that influences properties and potential applications. Hence, investigation of cement strength, which is affected by cement fineness, is prior to limit the propensity of cracking through the improvement of internal structure as well as the bond between cement paste and aggregate. In this regard, the tests of porosity, flexural, and compressive in macro-level and SEM/XRD/EDX analysis in micro-level were conducted to clarify the effect of cement fineness on variations of macro- and micro-properties of cement mortar specimens subjected to different freezing/thawing cycles (50, 100, 150, and 200). The detection and tracking of cracks were also determined using image analysis. Based on experimental evidence, it was found that the influence of fine cement on the porosity and strength properties of cement mortar was greater than coarse cement; this also was clarified by changes of cement paste micro-structure. Moreover, the image analyses showed that the use of fine cement led to a decrease in the crack width, whereas the crack tortuosity to find the path growth was increased. Consequently, cracks behavior was found to correlate with the cement paste micro-structure, whose characteristics relate to the cement fineness.
Insights into surface crack propagation of cement mortar with different cement fineness subjected to freezing/thawing
https://orcid.org/0000-0001-9156-6103
Graphical abstract Display Omitted
Highlights The effect of cement fineness on the crack propagation of cement mortar was investigated. Insight into a macro to micro-crack was based on changes in macro to micro-properties under F/T cycle. Microstructural and image analyses were used to explain the crack mechanism from the macro and micro perspective. Increase of resistance against cracking was due to the better performance of cement with highest fineness.
Abstract As cementitious material freezes and thaws, cracks may expand due to the weakness in the internal structure, the behavior that influences properties and potential applications. Hence, investigation of cement strength, which is affected by cement fineness, is prior to limit the propensity of cracking through the improvement of internal structure as well as the bond between cement paste and aggregate. In this regard, the tests of porosity, flexural, and compressive in macro-level and SEM/XRD/EDX analysis in micro-level were conducted to clarify the effect of cement fineness on variations of macro- and micro-properties of cement mortar specimens subjected to different freezing/thawing cycles (50, 100, 150, and 200). The detection and tracking of cracks were also determined using image analysis. Based on experimental evidence, it was found that the influence of fine cement on the porosity and strength properties of cement mortar was greater than coarse cement; this also was clarified by changes of cement paste micro-structure. Moreover, the image analyses showed that the use of fine cement led to a decrease in the crack width, whereas the crack tortuosity to find the path growth was increased. Consequently, cracks behavior was found to correlate with the cement paste micro-structure, whose characteristics relate to the cement fineness.
Insights into surface crack propagation of cement mortar with different cement fineness subjected to freezing/thawing
https://orcid.org/0000-0001-9156-6103
Graphical abstract Display Omitted
Highlights The effect of cement fineness on the crack propagation of cement mortar was investigated. Insight into a macro to micro-crack was based on changes in macro to micro-properties under F/T cycle. Microstructural and image analyses were used to explain the crack mechanism from the macro and micro perspective. Increase of resistance against cracking was due to the better performance of cement with highest fineness.
Abstract As cementitious material freezes and thaws, cracks may expand due to the weakness in the internal structure, the behavior that influences properties and potential applications. Hence, investigation of cement strength, which is affected by cement fineness, is prior to limit the propensity of cracking through the improvement of internal structure as well as the bond between cement paste and aggregate. In this regard, the tests of porosity, flexural, and compressive in macro-level and SEM/XRD/EDX analysis in micro-level were conducted to clarify the effect of cement fineness on variations of macro- and micro-properties of cement mortar specimens subjected to different freezing/thawing cycles (50, 100, 150, and 200). The detection and tracking of cracks were also determined using image analysis. Based on experimental evidence, it was found that the influence of fine cement on the porosity and strength properties of cement mortar was greater than coarse cement; this also was clarified by changes of cement paste micro-structure. Moreover, the image analyses showed that the use of fine cement led to a decrease in the crack width, whereas the crack tortuosity to find the path growth was increased. Consequently, cracks behavior was found to correlate with the cement paste micro-structure, whose characteristics relate to the cement fineness.
Insights into surface crack propagation of cement mortar with different cement fineness subjected to freezing/thawing
Divanedari, Hadi (author) / Eskandari-Naddaf, Hamid (author)
2019-10-09
Article (Journal)
Electronic Resource
English
Freezing and thawing tests on cement mortar
| Engineering Index Backfile | 1955
Freezing and thawing tests on cement mortar
| Engineering Index Backfile | 1955
Freezing and Thawing Resistance of Cement Asphalt Mortar
| Trans Tech Publications | 2008
Freezing and Thawing Resistance of Cement Asphalt Mortar
| British Library Conference Proceedings | 2009
Freezing and Thawing Resistance of Cement Asphalt Mortar
| British Library Online Contents | 2009