This paper is focused on using foam concrete as structural element in polymer-concrete composite plate girders. Trial mixes of foam concrete and different proportions of foam agent were considered to obtain the suitable mix that can be used as structural element in composite girders system. Details of the experimental investigations on foam concrete precast slabs and polymer-concrete composite ...

Identical amounts of each protein were analyzed by SDSPAGE and with the Experion system (Bio-Rad Laboratories). For SDS-PAGE, samples were prepared by mixing equal volumes of protein sample and 2x Laemmli sample buffer with or without 5% β-mercaptoethanol. Following separation on CriterionTM Tris-HCl 4–20% precast gels, gels were stained with Bio-SafeTM colloidal Coomassie Blue stain and imaged...

The problem of concrete bridge deck deterioration on many of our newer as well as older bridges is severe, somewhat perplexing as to cause, and difficult to solve. Furthermore, the cost to highway agencies for their repair, and the cost of delay to the highway user, can be extremely large. The use of precast, prestressed concrete for bridge decks is a con­ cept of construction or reconstruction...

Ureaplasma urealyticum has been associated with urethritis in men, obstetric problems in women, and respiratory distress syndrome in preterm infants. U. urealyticum can be divided into two biovars comprising 14 serovars. Partial sequences of genes encoding the multiple-banded antigens of the cell surface are known. Using a commercially available precast DNA mutation detection gel system, we hav...

concrete pavements and precast members gained notoriety because of uncertainty over the cause of their distress. Because of the unexplained and complex nature of several of these cases, considerable debate and controversy have arisen in the research and consulting community. To a great extent, this has led to a misperception that the problems are more prevalent than actual case studies would in...

In order to manage site precast concrete construction which has been increasing, an integrated construction management system employing a unique 3-D modelling method and analogue process input method was developed. At the planning stage, the system supports interactive planning between member configuration and installation planning by a visual method and with an accurate quantity. At the proces...

This article reviews a method for generating a product model from user data and introduces 12 design patterns for resolving conflicts that may occur in the integration and normalization process. The generating method and design patterns were evaluated during a project to integrate the product models collected from three different precast concrete companies in the United States, testing the new ...

We review the transition now being undertaken from 2D drafting to 3D parametric modeling and the development of Building Information Modeling (BIM). We examine the functionality of BIM platforms, using an example from precast concrete structures. We formulate the development of parametric modeling of building systems from the context of SFB modeling and characterize most parametric modeling as ...