Towards tailored cement-based materials with ground calcium carbonates
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A large number of design approaches for structural concrete rely on the applicability of limit analysis. This is for instance the case of bending and shear design in members with transverse reinforcement, where it is assumed that plastic compression fields ...
The phase assemblage of binary Portland cements with 45 wt% replacement by calcareous fly ash and slag has been investigated by experiment, mass balance and thermodynamic simulations. The input for these calculations was based on clinker reaction measured ...
At the turn of the 19th century, the production and use of concrete were limited by the unavailability of raw materials to produce good cement in several places. From that time onwards, the progress of chemistry and a number of empirical discoveries opened ...
Autogenous shrinkage is the unrestrained volume change of cementitious materials occurring at con-stant temperature without any change in mass. It occurs as a consequence of self-desiccation (de-crease of internal relative humidity) and increasing capillar ...
Supplementary materials that are utilized to replace ordinary Portland cement (OPC) decrease the workability of the cementitious mixtures and superplasticizers are usually added to cement to control their fluidity. In general, current superplasticizers are ...
The modern use of concrete developed in the eighteenth and nineteenth centuries from the interest in archaeology, the observation of some vernacular building techniques and some construction-site practices that had survived locally from the times of ancien ...
Through a collaborative research effort between the Ecole Polytechnique Federal de Lausanne and CIDEM a new kind of cementitious binder has been developed based on the synergy between calcined clays and limestone. Industrial trials carried out in Cuba duri ...
Rapid screening tests for supplementary cementitious materials (SCMs) have been in use for over 150 years. Over the years a multitude of methods have been put forward to predict the strength development of SCMblended mortars and concrete. This paper summar ...
The results obtained from many previous studies highlight the need for further investigation of the strong connection existing between fresh state and hardened state performance of fiber reinforced concrete. A comprehensive experimental study was conducted ...
Due to the enormous volumes produced the production of concrete accounts for around 5-10% of man-made CO2 emissions. Consideration of possible routes to reduce this environmental impact indicates that the use of calcined clays in as supplementary cementiti ...