Conbextra HS is a dual shrinkage compensated, high flow cementitious grout used grouting applications where rapid strength gain and high ultimate strength is a pre-requisite. Compressive strength of 26 MPa @ 8 hours and 95 MPa @ 28 days when mixed at flowable consistency.
Typical Applications
- Grouting machine bases where quick back to service is required and/or high ultimate compressive strength
Advantages
- Non-metallic dual expansion system compensates for shrinkage in both the plastic and hardened states
- Excellent initial flow and flow retention suitable for large and small grout pours
- Rapid strength gain facilitates efficient installation and operation of plant
- High ultimate strength and low permeability ensure durability of the hardened grout
- Hydrogen-free gaseous expansion
- Chloride free
- Suitable for pumping or pouring over a large range of application consistencies and temperatures
Key Properties
- 28 day strength @ 20°C dependent on consistency (cube samples) : 85-100MPa
- Application method : Pump or pour
- Chemical resistance : Not resistant to acids - use epoxy grouts
- Flexural Strength (modulus of rupture) @ 28 days : 137MPa
- Gap size : 10mm to 125mm
- Indirect tensile strength @ 28 days : 70MPa
- Service temperature : >200°C
- Set time : 5 hours
- Tack free time : 600mm flow cone 10 - 30 seconds
