It is widely acknowledged that there is an increasing problem in maintenance of the American civil infrastructure. Highways, bridges, sewers, railroads, harbors, and public biuldings built in the 1950s and 1960s are wearing out, while inflation-adjusted federal spending on infrastructure has fallen. The current situation, with respect to highway bridge maintenance is, in fact, so severe that ma…
Ruang Koleksi Umum Rak: 3
Ruang Koleksi Umum Rak: 3
LOKASI: Ruang Koleksi Umum Rak: 3
BOK Jurnal HPJI
Ageing infrastructure such as pipelinesare often subjected to third party activities, such as tunnelling. If engineers are unable to confidently judge the effects on the pipeline in question, this may result in costly and possibly innecessary diversions to avoid the problem. Current methods of assessing the effect of tunnelling on buried pipelines are mostly based on elasticity and although ext…
The sambonihara Tunnel is on the Tohoku Shinkansen Line. The geology of this tunneling site mainly consists of alternating layers of unconsolidated sandy soil under high hydraulic preassures and cohesive soil. This tunnel was excavated using the NATM, but the tunnel face collapsed twice, preventing the tunnel construction from advancing as scheduled. We therefore conducted an-depth study to dev…
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GEOPOLYMER AS GREEN CONSTRUCTION MATERIALS RESEARCH describes about different important factors (e.g. NaOH molarity, activator-to-fly ash ratios, curing condition, etc.) influencing the processing of the fly ash-based geopolymer were investigated. These experimental results are utilized to propose a new method for geopolymer cement processing and the design of geopolymer concrete mixtures. Expe…
LOKLASI: Ruang Koleksi Umum Rak: 3