http://hdl.handle.net/2440/12 2013-06-18T05:59:19Z http://hdl.handle.net/2440/78372 Title: A finite element modelling to investigate the mitigation of blast effects on reinforced concrete panel using foam cladding Author: Wu, Chengqing; Sheikh, Abdul Hamid 2012-12-31T13:30:00Z http://hdl.handle.net/2440/78353 Title: A conditional disaggregation algorithm for generating fine time-scale rainfall data in a warmer climate Author: Westra, Seth Pieter; Evans, Jason P.; Mehrotra, Rajeshwar; Sharma, Ashish Abstract: This paper describes an algorithm for disaggregating daily rainfall into sub-daily rainfall ‘fragments’ (fine-resolution rainfall sequences) under a future, warmer climate. The algorithm uses a combined generalised additive model (GAM) and method of fragments (MoFs) framework to resample sub-daily rainfall fragments from the historical record conditional on daily rainfall amount and a range of atmospheric covariates. The rationale is that as the atmosphere warms, future rainfall patterns will be more reflective of historical rainfall patterns corresponding to warmer days at the same location, or to locations which have an atmospheric profile more reflective of expected future climate. It was found that the daily to sub-daily scaling relationship varied significantly by season and by location, with rainfall patterns on warmer seasons or at warmer locations typically showing more intense rainfall occurring over shorter periods compared with cooler seasons and stations. Importantly, by regressing against atmospheric covariates such as temperature, this effect was substantially reduced, suggesting that the approach may also be valid when extrapolating to a future climate. The GAM–MoF algorithm was then applied to nine stations around Australia, with the results showing that relative to the daily rainfall amount, the maximum intensity of short duration rainfall increased by between 4.1% and 13.4% per degree change in temperature for the maximum six minute burst, and by between 3.1% and 6.8% for the maximum 1 h burst. The fraction of each wet day with no rainfall also increased by between 1.5% and 3.5%. This highlights that a significant proportion of the change to the distribution of rainfall is likely to occur at sub-daily timescales, with important implications for many hydrological systems. 2012-12-31T13:30:00Z http://hdl.handle.net/2440/78313 Title: The effect of curing time on compressive strength of composite cement concrete Author: Uddin, Md. Alhaz; Jameel, Mohammed; Sobuz, Md. Habibur Rahman; Hasan, Noor Md Sadiqul; Islam, Md Shahinul; Amanat, Khan Mahmud Abstract: The effect of curing condition of five different composition of Portland composite cement (PCC) and ordinary Portland cement (OPC) were investigated in this study. Compressive strength development of five different concrete types has been investigated in terms of cement content and curing duration. From the experimental observation, it is found that the early age strength of concrete made with PCC is lower than that of concrete made with OPC due to the presence of fly ash in PCC which is responsible for the pozzolanic reaction. The continued pozzolanic activity of fly ash contributes to increase strength gain at later ages at continued curing condition. It is also found that drying ambient conditions reduction of the strength potential of concrete made with PCC because the secondary (pozzolanic) reaction fails to contribute to the development of strength. 2011-12-31T13:30:00Z http://hdl.handle.net/2440/78306 Title: Partial-interaction time dependent behaviour of reinforced concrete beams Author: Visintin, Phillip; Oehlers, Deric John; Haskett, Matthew Henry Thomas 2012-12-31T13:30:00Z