Fosroc Conbextra UW

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Fosroc Conbextra UW's aggregate grading minimises segregation and bleeding whilst maintaining flow characteristics, and the gaseous expansion system compensates for shrinkage and s ettlement in the plastic state. When placed above water it can be used in section thicknesses up to 75mm in a single pour; when placed underwater, the heat-sink effect of the environment allows thicknesses of up to 150mm. For thicker sections, Conbextra UW can be extended with clean rounded well-graded aggregate at a ratio not exceeding 1:1 by weight — allowing sections up to 200mm above water and up to 400mm underwater. Typical applications include; stanchion baseplates in submerged or tidal conditions, bridge columns and quay pillars and concrete piling and slipways Benefits Wash-out resistant, no significant cement phase loss in stationary or moving water Displaces water effectively Non-shrink Chloride free Can be poured or pumped Good to know High early and ultimate strength — 25 MPa at 1 day / 50 MPa at 7 days / 60 MPa at 28 days Exceptional freeze-thaw resistance: 2.1 MPa (Class R4 ≥2.0 MPa) Bond strength by pull-off: 2.2 MPa Elastic modulus: 30.7 GPa at 28 days Section thickness above water: 10mm to 75mm (up to 200mm with aggregate extension) Section thickness below water: up to 150mm (up to 400mm with aggregate extension) Water addition: 5.5 litres per 25kg bag (flowable) Yield: approximately 14.5 litres per 25kg bag Show more