CBGM-EWT300 Extended Working Time Grout

Product Overview

CBGM-EWT300 is a premium Extended Working Time Grout formulated for high-precision grouting applications where placement flexibility, dimensional stability, and high mechanical performance are critical. With a compressive strength reaching 70 MPa at 28 days, this non-shrink, cement-based grout is ideal for structural installations, equipment bases, and industrial foundations that demand reliability over an extended application window.

Its pumpable consistency, high flowability, and non-corrosive composition make it especially suited for large pours and congested spaces.

Applications

• Grouting under heavy equipment and precision baseplates

• Secondary grouting of steel columns and precast structural elements

• Anchor bolt, dowel, and reinforcement bar embedment

• Filling voids in structural concrete repairs

• Large-scale industrial foundation grouting

• Pumpable grouting in congested or deep applications (≥300 mm)

Construction process

1 Surface Preparation

• Clean all contact surfaces; remove laitance, oil, dust

• Ensure surface is SSD (Saturated Surface Dry)

• Use formwork where needed, coated with release agent

2 Mixing

• Mix with clean water as mentioned

• Use paddle mixer (400–600 rpm) for 3 minutes

• Avoid over-mixing or introducing air

3 Placement

• Place within 60 minutes of mixing

• Pour continuously to avoid cold joints

• Use gravity feed or pump for deep/congested areas

• Light rodding/vibration recommended if needed

4 Curing

• Cover with plastic sheet or moist curing fabric immediately

• Maintain temperature >5°C during curing

• Use thermal insulation for cold weather

Performance metrics

Packaging and storage

• Packaging: 25 kg moisture-resistant kraft paper bags

• Shelf Life: 6 months (unopened, ≤30°C)

• Storage Conditions: Store in dry, shaded, well-ventilated place