Owing to the comprehensive building redevelopment programmes in Hong Kong, there is a huge volume of concrete waste generated that will soon exhaust all the available landfill areas. As such, recycled aggregate is advocated. However, the use of recycled aggregate has been confined to lower-grade applications until now, such as the lower layers of a pavement structures, e.g. capping and sub-base...

this paper presents theoretical and numerical state-of-the-art information in the field of hygro-thermo-mechanical deformation simulation in structural concrete. the aspects discussed include coupled hygro-thermo-mechanical performance of porous materials including concrete, multi-scale simulation of concrete properties especially the volumetric and structural deformation performance, and the m...

We consider an uncertain generalized plant whose control channel is not affected by uncertainties. It is shown that these configurations emerge in various concrete problems such as robust estimator or feed-forward controller design. Under the mere hypothesis that the (possibly non-linear) uncertainties are described by integral quadratic constraints, we reveal how one can translate robust contr...

The usage of regenerable low power sources is currently rather reduced. Utilization of some specialized softwares of SCADA type allow the operation of the low-power hydroelectric power plants in automatic regime, without local monitoring personnel, these being able to be remotely monitored and controlled. In this way, the utilization of such power plants becomes profitable. A special importance...

todays applying concrete structures is more usual than other structures which are used in buildings as in most of the world’s countries the application ratio of concrete to steel has increased from 10 to 1. sometimes these structures require strengthening vulnerable members because of deficiency in their loading system in usual and critical conditions. there are different methods for strengthen...

Numerous test results at laboratory scale confirm the utility of Recycled Aggregate (RA) for development concrete that demonstrates durability and adequate in-fresh mechanical behavior. However, feasibility evaluations use RA in real industrial applications are necessary, before any large-scale application these products can begin. In this research, producing precast-concrete components contain...

This research deals with the study and modification of the initial process used by the General Electric Silicones plant to produce a useful material from the hazardous waste it generates. The generation and treatment of the waste is given in a brief overview. Samples taken at various stages in the industrial process were characterized by chemical and physical analyses. Results showed that amorp...