Shrinkage can be critical factor for the design of structural members due to the length changes by the timedependent deformation. Given the high fluidity and different mixture proportions of SCC, the shrinkage of such concrete can differ from those of conventional concrete or HPC of normal consistency. Proper estimate of autogenous shrinkage of self-consolidating concrete (SCC) can provide engi...

BIM is a complex technology. Although its potential benefits are clear, its integration in structural engineering firms requires leadership and persistence as well as careful planning. Sophisticated threedimensional parametric modelling software for precast concrete structures has been commercially available since 2005. Early adopters have gained sufficient experience with precast concrete buil...

Denaturing polyacrylamide gel electrophoretic analysis of amplified polymorphic short tandem repeat (STR) loci using fluorescent markers is a mainstay of forensic and paternity testing. To reduce the drawback of preparing gels or using expensive precast gels, we have developed a simple and rapid method to reuse gels between 2 and 8 times over a period of several days. Following the initial elec...

Pengabdian pada masyarakat ini dilaksanakan atas kebutuhan jemaat sektor setempat akan sarana septictank untuk keperluan sanitasi. Selain pemenuhan tersebut, dalam hal mereka yang berprofesi sebagi tukang diperkenalkan dengan beton precast sebagai material praktis pembuatan dilakukan Baeleo Jemaat Sektor Ora Et Labora desa Amahusu. Dalam pelaksanaannya, peserta dikenalkan pemanfaatan dan dibeka...

Predicting the Seismic Behavior of the Dywidag Ductile Connector (DDC) Precast Concrete System Elizabeth Mary Kenyon Structural engineering is heavily dependent on the use of computers. When creating a building model using structural analysis software, it is required that the designer have an understanding of the system behavior and the modeling program capabilities. Some engineers in the South...

This paper presents the results from the testing of a 0.4-scale “hybrid” precast concrete wall specimen under reversed-cyclic lateral loads combined with gravity loading. The specimen was designed to conform to the requirements of ACI ITG-5.2 (2009) and tested according to ACI ITG-5.1 (2007) to ultimately support the validation of hybrid precast walls for use in moderate and high seismic region...

The monitoring of a precast, prestressed girder bridge during fabrication and service provided the opportunity to observe temperature variations and to evaluate the accuracy of calculated strains and cambers. The use of high curing temperatures during fabrication affects the level of prestress because the strand length is fixed during the heating, the coefficients of thermal expansion of steel ...

Owing to its controllable tolerance, simple operation and no need for welding at construction site, the composite system involving grouted cement material, steel material and ductile iron material is widely used as grouted splice sleeve (GSS) connector for connecting precast concrete structures. However, the current design recommendations for such a composite connection system do not accurately...

Michael G. Oliva, Ph.D. Professor Department of Civil and Environmental Engineering University of Wisconsin–Madison Madison, Wisconsin The in-plane fl exibility of untopped precast concrete double-tee diaphragms is often ignored in current design practice. The performance of parking structures during earthquakes and subsequent research studies have shown, however, that in-plane fl exibility of ...

The performance of precast shear wall panel structures subjected to earthquakes relies on the behaviour and integrity of the connections between the panels. The current lack of knowledge on the seismic behaviour of precast wall connections limits the use of such systems in earthquake areas. This paper presents results of an extensive experimental program undertaken at the University of Manitoba...