Foam infills for concrete

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Author Message Robin E. Treston Senior Member Username: robin Post Number: 9 Registered: 08-2004 Posted on Monday, January 10, 2005 - 05:28 pm:    Does anyone know the proper way to specify foam infills that are used in concrete floors. IE, instead of 5 feet of concrete, a dense foam infill is used. What type of foam? Is there a minimum density for structural soundness? Ronald L. Geren, RA, CSI, CCS, CCCA Senior Member Username: specman Post Number: 76 Registered: 03-2003 Posted on Monday, January 10, 2005 - 05:30 pm:    Robin: I'm glad you asked. I just had a conversation not over 5 minutes ago discussing the same thing. I'd be interested in the information, too. Dave Metzger Senior Member Username: davemetzger Post Number: 101 Registered: 07-2001 Posted on Monday, January 10, 2005 - 05:50 pm:    We specify this occasionally. The product we specify is extruded polystyrene board, complying with ASTM C578, Type VI or Type VII; these have minimum compressive strengths of 40 psi and 60 psi, respectively. Which we use depends on structural engineer's recommendation. Applicable products are Styrofoam Brand High Load 40 or 60 by Dow Chemical Company; and Foamular 400 or 600 by Owens Corning. Rafael C Nelson Senior Member Username: rc_nelson Post Number: 8 Registered: 01-2004 Posted on Monday, January 10, 2005 - 05:51 pm:    look into Insulfoam, Premier Industries, Inc. 1800-510-1939 for CA. they manufacture EPS for all applications. Anonymous   Posted on Monday, January 10, 2005 - 07:54 pm:    You might also consult ASTM D6817 Standard Specification for Rigid Cellular Polystyrene Geofoam Richard L. Hird P.E. CCS Senior Member Username: dick_hird Post Number: 17 Registered: 02-2004 Posted on Sunday, January 16, 2005 - 07:25 pm:    Suggest you look at Eastizell foam in place concrete. We have used it for these applications. Ronald L. Geren, RA, CSI, CCS, CCCA Senior Member Username: specman Post Number: 82 Registered: 03-2003 Posted on Monday, January 17, 2005 - 10:56 am:    Richard: I think you're referring to Elastizell (there's a "l" between the "E" and "a"). Their website is www.Elastizell.com. However, this appears to be a cement-based product with a density ranging from 20 to 120 pcf. In the application that Robin describes above, this will add 100 psf of floor area at the lowest density. This may be too much for the structural system to support. However, this appears to be excellent for floor fills requiring high compressive strengths, and as a substitute for the commonly specified gypsum-based underlayment.