Search

Sustainability is a growing priority for higher education institutions around the world. Universiti Teknologi Malaysia (UTM) through UTM Campus Sustainability Office ready to transform the campus as platform to inculcate the sustainability mind set of young people through education and empowering them to continue living the values in the future as stated in Transformasi Nasional 2050 (TN50) development plan. In 2010, among the first institution supporting UI GreenMetric auditing, UTM was positioned at rank 85, and then gradually improving the performance to position ourself to rank 66 in 2017. To boost this effort, sustainability elements have been implemented in Universiti Global Plan III (2018-2020) and UTM Master Plan 2017-2037. One of the main strength of UTM in UI GreenMetric evaluation components is Setting and Infrastructure that incorporates environmental and social considerations in addition to the traditional cost, time and quality. Improvement through transnational researches which is under Water and Energy Nexus projects such as biomass utilization and groundwater projects are escalating the efforts. For developing more robust approach, Sustainable Development Goals (SDG) has been incorporated in to six Living Labs (LL) initiatives. Positioning in global branding, integration across campus and regional level networking was aimed to leverage currents assets into further opportunities for research, teaching and institutional development.

In this paper, innovative technique using low-cost recycled steel straps confinement to repair load-induced damaged high-strength concrete (HSC) columns were studied. This paper explains the effects of repairing technique using post tensioning steel straps. A series of experimental test was carried out to investigate the stress-strain relationships of such concrete. A total of 6 HSC columns were compressed 50% of their ultimate strength, then repaired by using steel straps. The proposed repairing technique significantly improved the performance of damaged concrete columns, in both strength and ductility. It was evidenced from this study that the steel strapping confining technique is effective in repairing of damaged HSC columns but ensured reasonable operating costs.

In the design of repair works for damaged concrete, an accurate and representative stress-strain model is of important. The stress-strain model for damaged high strength concrete (HSC) repaired with post-tensioning steel straps confinement yet available, although the confining method has been proven to be effective in improving the performance of non-damaged HSC. A series of experimental test was carried out to investigate the stress-strain relationships of such concrete. A total of 24 HSC cylinders were compressed until certain damaged levels, then repaired by using steel straps. Two important parameters have been identified to have significant effects on the stress-strain relationship of such repaired concrete, namely the confining volumetric ratio and damaged levels. These parameters were incorporated into the development of stressstrain model, which later was shown to correlate well with the experimental results. This paper also has evidenced that existing stressstrain models of damaged concrete are not suitable to be directly applied to the design of repair works using post-tensioning steel straps confinement that produce external lateral stress on damaged columns before subsequent loading applied.