Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/74250
Title: Monitoring of early age shrinkage using image analysis and it's use in the repair of bridges
Authors: Ong, K.C.G. 
Kyaw, M.-L. 
Issue Date: 2006
Source: Ong, K.C.G.,Kyaw, M.-L. (2006). Monitoring of early age shrinkage using image analysis and it's use in the repair of bridges. Proceedings of the 3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost : 637-639. ScholarBank@NUS Repository.
Abstract: The very early age shrinkage of concrete has significant effects on the behavior and durability of concrete in service, especially in the case of composite specimens comprising freshly cast low W/C cementitious materials on a hardened concrete substrate. Such specimens are commonly encountered in the repair of bridges in the form of cementitious overlays, replacement of spalled cover concrete and enlargement of concrete bridge members. A new method of monitoring early age shrinkage strains beginning 30 minutes after adding water to the mix is presented herein. Where applicable, shrinkage strains monitored using this technique were compared with readings obtained using the laser sensor technique. Based on the results obtained it was found that shrinkage strains monitored using image analysis compares well with and as expected, are higher than that measured using laser sensors. This new technique is capable of monitoring differential shrinkage in the composite specimens tested. © 2006 Taylor & Francis Group.
Source Title: Proceedings of the 3rd International Conference on Bridge Maintenance, Safety and Management - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost
URI: http://scholarbank.nus.edu.sg/handle/10635/74250
ISBN: 0415403154
Appears in Collections:Staff Publications

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