Shrinkage and Creep of Concrete Prepared with Quaternary Blended Cement

摘要

Environmental protection and energy saving are crucial problems set up against today'srncement industry. The use of industrial by-products such as silica fume, slag, lime and fly ashrnin the concrete as cement substitution reduce cement production, and consequently lower thernCO2 emission and save energy.rnThis research work is inspired with the idea of replacing part of the cement with by-productsrnof thermal power plants and metallurgical industry. Research already done in this area showrnthat concrete prepared with blended cements has better permeability properties than thernordinary Portland cement concrete. In the present research emphasis was given onrndeformation properties of concrete and the effect of quaternary blended cements on totalrnshrinkage, creep and mechanical properties of concrete. After performing shrinkage and creeprntests and obtaining experimental results, shrinkage strain and creep coefficient wererncalculated according to European standard EN 1992-1 and Gardner/Lockman model, in orderrnto compare the results and evaluate whether the values proposed by standards and model canrnbe used during structural design of concrete prepared with quaternary blended cement.