Browsing by Author "Kulasuriya, C"

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    Design and development of alkali pozzolan cement (APC)
    (Elsevier, 2014) Kulasuriya, C; Vimonsatit, V; Dias, WPS; De Silva, P
    This paper describes the development of an environmentally friendly Alkali Pozzolan Cement (APC), a non-hazardous dry cement powder that incorporates a large percentage of fly ash but needs only ambient temperature curing in order to achieve strengths comparable to OPC controls. APC consists of fly ash, lime, an activator and OPC (a ‘scaffolding’ material). Scaffolding was the most statistically significant factor contributing to the compressive strength of APC paste specimens, compared to activation, age (3 days vs 28 days) and temperature (ambient vs 15 h at 60 C). SEM, EDS and XRD investigations were employed to explain variations in strength.
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    item: Article-Abstract
    Developing an Approach to A ssess ‘Integral Sustainability’ of Alkali Pozzolan Cement
    Kulasuriya, C; Vimonsatit, V; Dias, WPS
    This paper presents the search of an approach to assess 'integral sustainability'of a new cement called 'Alkali Pozzolan Cement'(APC). It can also be considered as an investigation into the possibility of employing fundamental concepts of integral theory in civil engineering or in the building engineering industry. To employ integral theory in an engineering context, the authors first propose a modified AQAL tetraquadrant frame work.
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    item: Conference-Full-text
    Development and evaluation of the aesthetics of structural form
    (2000) Kulasuriya, C; Dias, WPS; Hettiarachchi, MTP
    This Paper demonstrates that the aesthetic concepts of engineering design do not just arise; but that they are derived from various models of aesthetics. It also presents various Proportioning Systems and their application in Structures, through case studies, notably the use of the Golden Proportion. The Paper then describes the investigation of the aesthetic perception of two sets of respondents and also the optimisation of a simple structure. The preference for equality and for the Golden Ratio is discovered from the experiments on aesthetic perception. The study also deals with the optimisation of simple structure. Finally, it also describes the possibility of making initial design decisions relating to dimensions, using the plots of optimisation and plots of aesthetic preferences.
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    item: Thesis-Abstract
    Development and evaluation of the aesthetics of structural form
    Kulasuriya, C; Dias, WPS; Hettiarachchi, MTP
    This study demonstrates that the aesthetic concepts of engineering design do not just arise; but that they are derived from various models of aesthetics. It also presents various Proportioning Systems and their application in Structures, through case studies, notably the use of the Golden Proportion. The research includes two perceptual experiments. The first experiment was about the perception of rectangular shapes using one hundred respondents. The second experiment was about the perception of simple structures using fifty respondents. The results of these perceptual experiments confirm the fact that respondents' preferences are linked with the various philosophical models. The research also deals with optimization of simple structures. Optimization curves are obtained by varying the dimensions (or proportions) of the structure concerned. Finally, the dissertation also describes the possibility of making initial design decisions relating to dimensions (or proportions), using plots of optimization and plots of aesthetic preferences.