Product Overview

Conbextra HES is a high-early-strength, non-shrink, cementitious precision grout from Fosroc designed for base plate and equipment grouting applications where the standard 24 to 48 hours to loading with Conbextra GP2 or BB72IN is too slow for the project construction programme. In fast-track industrial construction, equipment installation, and infrastructure commissioning, there is often pressure to tighten the time between grouting a base plate and applying the design load — for example, when a production schedule requires machinery to be operational within 12 hours of grouting, when a bridge bearing plate must be loaded within hours by the advancing girder erection, or when an emergency repair to a machine plinth must be completed over a planned maintenance shutdown of limited duration. Conbextra HES uses a combination of rapid-hardening cement chemistry and optimised admixture technology to achieve the compressive strength needed for loading within 2 to 4 hours rather than 24 to 48 hours — typically achieving 20 to 30 MPa within 4 hours and above 40 MPa at 24 hours in ambient temperatures of 15 to 25 degrees C. The non-shrink property is maintained by the same expanding admixture approach as in standard Conbextra GP2, ensuring full contact between the base plate and the foundation at all times. Conbextra HES is supplied as a pre-bagged single-component powder requiring only the addition of clean water — an important advantage in fast-track applications where there is no time for complex on-site mixing. Space Arc Engineering distributes Conbextra HES for industrial equipment installation, bridge bearing grouting, and fast-track infrastructure projects across Delhi NCR and Northern India.

Applications

• Fast-track machinery and equipment base plate grouting for early loading
• Bridge bearing plate grouting with rapid loading by advancing girder construction
• Emergency repair grouting of machine plinths in production facilities
• Base plate grouting in industrial projects with tight commissioning schedules
• Rapid grouting of anchor bolts where structural loading must begin quickly
• Fast return to service grouting of structural column base plates

Key Advantages

• High early strength (20–30 MPa in 4 hours) for early loading
• Non-shrink — maintains full contact pressure between base plate and foundation
• Single-component — simple water addition for consistent fast-site mixing
• Faster commissioning — reduces time from grouting to equipment startup
• Suitable for emergency maintenance grouting with limited downtime
• Part of the Fosroc Conbextra precision grouting system range