Product Overview

Cebex 200 is a powder expanding admixture from Fosroc that generates small controlled amounts of gas (hydrogen) in fresh cementitious grout or mortar during the plastic phase immediately after mixing. The gas generation causes a slight volumetric expansion of the grout that counteracts and compensates for the bleeding and settlement that would otherwise occur during the first few hours before the grout stiffens and sets. Without an expanding admixture, cement grouts tend to exhibit a settlement (bleed) of 2 to 5% of the grout volume — water separates to the top of the grout and the solid components settle. This settlement leaves voids at the top of the grouted space (at the highest points of the duct or void), which are precisely the most dangerous locations for tendon corrosion or void filling failures. By generating expansion that equals the expected settlement, Cebex 200 ensures the grout remains full to the top of every void throughout the setting process, producing the completely void-free grouting required in critical structural applications. Cebex 200 is used in pre-stressing tendon duct grouting (where Cebex EN is the premium product with specifically calibrated expansion and zero bleed), in anchor bolt and chemical anchor grouting, in bridge bearing pocket grouting, and in any application where the absence of settlement voids in the hardened grout is a design requirement. The dosage of Cebex 200 must be carefully controlled — under-dosing gives insufficient expansion and some settlement; over-dosing causes excessive gas generation that can produce a coarse cellular foam with reduced strength. Space Arc Engineering distributes Cebex 200 for prestressed concrete, bridge, and infrastructure grouting projects across Delhi NCR and Northern India.

Applications

• Cementitious grout expanding admixture for bearing pocket and void grouting
• Non-shrink grout production for anchor bolt and chemical anchor grouting
• Pre-stressing tendon duct grouting as part of the non-bleed grout mix
• Expanding admixture in machine base plate cementitious grout
• Void filling grout for underground and below-grade applications
• Non-shrink mortar production for structural repair and filling applications

Key Advantages

• Gas-generating expansion compensates for grout settlement and bleeding
• Ensures void-free grouting at the highest points of ducts and voids
• Powder form — easy to incorporate into dry-mixed grout systems
• Produces controlled expansion at the correct dosage without excess foam
• Prevents settlement voids that would compromise structural performance
• Part of the Fosroc Cebex admixture family for specialist concrete applications