Post-Tensioning Grout（Duct Grout）

Product overview

Performance and application overview.

Product Overview

Full Duct Filling with Anti-Corrosion Protection;Good fluidity, no water secretion, no delamination; Full early strength and micro-expansion of slurry; One-time slurry construction, dense slurry in the pipe without porosity; Pre-stressing steel does not rust, and concrete bond is strong.

Why Choose Us?

1.Cementitious, non-metallic grout with two-stage shrinkage compensation， eliminates cracking in plastic & hardened stages

2.Zero chloride content (<0.05%) + corrosion inhibitor– protects prestressing tendons in harsh environments (marine, de-icing salts)

3.Ultra-high fluidity (11-30s flow time per ASTM C939) – ensures complete void filling without segregation

4.Operable from -5°C to 40°C – superior low-temperature curing vs. competitors (e.g., SikaGrout 300PT: +5°C min)

5.Pre-mixed, just add water – no special equipment required

Applications

Bridge tendon grouting: Full duct filling for corrosion protection in highway/railway bridges

Nuclear power plants: Low permeability + chloride-free for safety-critical structures

Offshore wind farms: Saltwater-resistant protection for turbine foundations

High-rise buildings: Prestressed slab/beam duct grouting

Construction process

1. Before use, carry out trial mixing to determine the best ratio, H-60A (H-60) recommended mixing amount of 10%.

2. Mixing: should be used at a speed of not less than 1000rpm/min high-speed mechanical mixer mixing mixing order is: first add water to the appropriate scale, open the mixer, uniformly add the mortar agent, and then uniformly add the cement; all the powder to join the end of the mixing and then stir for 3 to 5 minutes to press the mortar.

3. Grouting: grouting as soon as possible after mixing, should take the usual grouting methods to ensure continuous pouring.

4. Protective measures: Wear protective gloves and goggles during construction.

5. Cleaning:Clean all construction tools and equipment with water.