This paper addresses the problem of quantifying the mechanical contribution of rockbolts installed systematically around tunnels (regularly spaced around the tunnel) excavated in rock masses. Assuming that the mechanical contribution of grouted rockbolts is that of increasing internal pressure within a broken rock mass, a new procedure for computation of ground response curves for a circular tu...

A novel precast concrete beam connected using double-grouted sleeves was developed to reduce pouring on-site and expedite construction. This paper presents a systematic experimental study on the flexural behaviour of beams subjected three-point four-point bending. In total, 11 specimens with different types grouted sleeves, diameters lower transition bar, filler lengths, numbers filler, connect...

This short paper gives an introduction into electronic product catalogs and classification systems such as eCl@ss or UN/SPSC used in this domain. The role of classification systems to foster interoperability of catalog based enterprise systems is explained as well as problems that occur. Afterwards an approach is presented that aims in compensating these problems with the help of a mediating sy...

In this paper, we recommend and promote global standards of the e-Trade process on the basis of ebXML & web services. For the ebXML Frameworkbased e-Trade to be facilitated, it is urgent for each country to implement and use national ebXML registry and standardize electronic documents, electronic catalog and electronic payment. In UNCEFACT, ebXML-based UN Central Registry & Repository is in the...