Nowadays. the popularity of sustainable concrete construction is increasing every passing year. The purpose of the construction industry is to increase the life of the residence by lowering C02 emissions and to increase the use of natural resources. Examination of thermal mass can be used to prevent or minimize temperature swings in the building and can be used to eliminate the need for energy consumption. Thermal mass rrduces the risk of overheating in the summer and provides passive heating in the winter. Thermal mass is currently evaluated with '•admittance" that is the ability of the element to exchange heat with the environment and is based on specific heat capacity, thermal conductivity and density. The aim of this study is to evaluate the effect of thermal properties namely. density. specific heat capacity and thermal conductivity on thermal mass of concrete. In order to evaluate the effect of such thermal properties, different types of cement materials (PF A, GGBS. and SF) and various types of aggregates (NA and RCA) are used. Additionally. water-cement ratio is investigated. Once thermal properties are found, them1al dynamic properties are calculated theoretically for each sample. These calculations lead an understanding on the effects of different types of cement materials. recyrled coarse aggregate and water-cement ratio of the concrete mixes on the thermal admittance and hence thermal mass.The laboratory tests results were analysed that PF A content concrete mixes were decreased the thermal conductivity more than other type of cements content mixes (such as SF and GGBS).30% PF A content in concrete mix has greater reduction thermal conductivity of the concrete mix. On the other hand, 15 % SF was decreased the them1al conductivity equal percentage (6.5%) with 55% GGBS content concrete mix. The laboratory results are shown that 10 and 20% SF conten1 concrete has greater specific heat capacity than 10 and 20% PF A content concrete. 65% GGBS content concrete mix has greatest specific heat capacity of the concrete mix than all of the mixes. When 30% natural aggregate is replaced by recycled

A LimesNet mission to Chalmers University of Technology, in Sweden, is reported in this paper. The aim of the mission was to explore new ways of exploiting the untapped potential of life-cycle assessment, its application in the civil engineering and construction industries and, specifically, to debate the associated trade-off decisions for reinforced concrete structures (buildings and civil engineering). Life-cycle assessment is an important tool in sustainable design; engineers need robust life-cycle assessment data and must balance this with operational performance considerations (e.g. energy consumption, durability). Through the mission it was clear that much could be learned from the Swedish experience. The UK team noted the importance of life-cycle assessment studies which allow building performance and construction products to be benchmarked and the role of emerging European standards (e.g. product category rules for construction and the development of environmental product declarations). Valuable lessons exist for consulting engineers and materials manufacturers, and there is a need for the greater inclusion of life-cycle assessment skills in the civil engineering education curriculum.

Fibre reinforced polymers (FRP) have been used as strengthening for existing RC structures for many decades. Lately, there has been a lot of interest in using FRP as internal reinforcement in beams, slabs and columns. One potential area of application could be reinforced concrete frames internally reinforced with GFRP bars. With limited research in this direction, the objective of this publication is to assess the behaviour of glass FRP (GFRP) reinforced concrete frames under reversed cyclic lateral in plane loading and to analyse the seismic performances of such elements. For the purpose of this paper, experimental testing of two 1/3 scaled down frames is conducted in displacement-controlled mode with the loading history according to ACI 374.1-05. The control sample is reinforced with conventional steel reinforcement and the results obtained are compared with the sample reinforced with GFRP bars. In summary, observations on the sample behaviour at specified drift ratio such as load-displacement behaviour, envelope curves and energy dissipation are presented.

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