CompositesWorld
Issue link: https://cw.epubxp.com/i/919214
JANUARY 2018 38 CompositesWorld INSIDE MANUFACTURING PRESENTER PRESENTED BY Technical Fibre Products DR. MANDY CLEMENT Technology Manager EVENT DESCRIPTION: In general composites are combustible and must be designed carefully to ensure that they meet stringent industry specific fire test standards. is webinar will highlight how advanced nonwovens manufactured by TFP, known as Tecnofire®, can be easily utilized to provide enhanced fire protection to composite structures. e use of Tecnofire® in a range of market sectors including aerospace, mass transportation and infrastructure will be reviewed and composite processing techniques, suitable for use with the Tecnofire® range, will be highlighted. PARTICIPANTS WILL LEARN: • How Tecnofire® advanced nonwovens can provide superior solutions for composite fire protection. • How the properties of advanced nonwovens can be tailored to suit end-use requirements. • Example case studies demonstrating the effective use of Tecnofire® in a selection of market sectors. Enhancing Composite Fire Protection Using Advanced Nonwovens January 31, 2018 • 2:00 PM ET REGISTER TODAY FOR WEBINAR AT: http://short.compositesworld.com/TFP125 insulation performance or conduct temperature in or out of the panel." He adds that continuous insulation is a requirement in most building codes today. ere also are no voids or cavities to support mold growth, and the C-GRID panels provide inherent corrosion resistance and fire resistance without additional layers or concrete additives. Fast-paced production With the design and construction approach determined, Metromont worked with Cooper Cary and the Engineer of Record (EOR) to optimize panel sizes, aiming for the fewest number of panels that would satisfy building code require- ments. During this final phase of design, each piece in the building was engineered to carry its required load and its connections were detailed, both to the structural frame and to other precast elements. "Once the construction drawings were approved, we were released to start production," says Spence. "is was roughly two months before they would be ready for us on the job site." When production began at the Metromont precast plant, each wall panel was made using basically the same steps. "e panels were 12 ft [3.7m] tall because they span from floor-to-floor in the building and, for this project, range from 24 to 44 ft [7.3-13.4m] in length," Spence explains. e exterior face of each panel was poured first. "It used a 2.5-inch [63.5-mm] thick architectural mix concrete poured on top of 0.625-inch [15.875-mm] thick facing bricks used for exteriors, which had already been set face down in a mold," he continues. Next, 4-inch /102-mm thick expanded poly- styrene (EPS) foam boards were placed on top (Step 1, p. 36). Strips of C-GRID were then placed vertically next to and in between the EPS foam boards at regular intervals, plunged 0.75 inch/19 mm down into the wet concrete (Step 2, p. 36). eir tops would extend into the final pour of concrete. "ese connect the exterior wythe to the interior wythe, which will be poured next," notes Spence. Before the final concrete pour, prestressed cables and some conventional steel reinforcements (see black and brown strands, respectively, in Step 3, p. 36) were placed on top of the EPS foam. (ese also were used in the previously poured exterior wythe and were part of the approved design for these loadbearing walls.) Plastic covers (the yellow "cups" visible in Step 3) for lifting inserts that enable crane installation of the panels were also C-GRID panels provide the architect and builder inherent corrosion and fire resistance.