INTERNALLY SEALED CONCRETE: WAX BEADS
This report covers the placement, heating, and testing of two test sites: a salt shed floor, and a bridge deck span. Wax beads were mixed with fresh concrete and used as a 1.5 in. (38 mm) overlay on the salt house floor slab. In the construction of the bridge span, wax beads were used throughout the full 9.5 in. (240 mm) depth of the deck, to avoid two stage pouring. Three methods of melting the wax are discussed. They include: infrared heating, forced air heating, and electric blanket heating. While melting the wax the maximum allowable surface temperature is 350 F (144 C). A minimum temperature of 185 F (85 C) is required at the reinforcing steel level to melt the wax. Various tests were run on the slabs. Discussed in this report are: absorption, penetration, chloride analysis, skid resistance, crack survey, compressive strengths, and half-cell. A special provision for internally wax sealed concrete bridge floors, as developed by the Oklahoma Department of Transportation (ODOT), is included. /FHWA/
- Sponsored by the Oklahoma Division of the Federal Highway Administration.
Oklahoma Department of Transportation200 NE 21st Street
Oklahoma City, OK United States 73105
- Publication Date: 1978-12
- Pagination: n.p.
- TRT Terms: Absorption; Bridge decks; Chlorides; Compressive strength; Concrete; Cracking; Pendulum tests; Skid resistance; Waxes
- Uncontrolled Terms: Concrete cracking
- Old TRIS Terms: Beading
- Subject Areas: Highways; Materials;
- Accession Number: 00188962
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: FHWA-RD-OK-79-02-1 Final Rpt.
- Files: TRIS, USDOT, STATEDOT
- Created Date: Apr 12 1979 12:00AM