FREQUENTLY ASKED QUESTIONS
Due to its high abrasion resistance and compressive strengths, UHPC Mortar is typically used to repair concrete that’s exposed to high abrasion and high impact. UHPC Mortar may also be used for roadway rut remediation, precast bridge connections, airport pavement repairs, industrial floors, heavy equipment repair areas, and solid waste transfer stations.
The type, size and dosage of fibers used with UHPC Mortar should be approved by the structural engineer, architect, or project owner based on the project specifications. CTS recommends conducting a mock-up to ensure the proposed mix design is suitable for its intended purpose. For steel fiber reinforcement, use only fibers conforming to ASTM A820.
Dry coarse #8, #89 and #9 aggregate that conforms to ASTM C33 may be used to extend UHPC Mortar. Each 60-lb bag of UHPC Mortar may be extended with up to 30 lbs of coarse aggregate. CTS recommends conducting a mock-up to ensure the proposed mix design is suitable for its intended purpose.
Yes, to maintain the high abrasion resistance of UHPC Mortar, we recommend using only high-performance aggregates such as trap rock, emery, or carborundum with an abrasion value of 15% or less per ASTM C131.
No. The physical data listed on the technical data sheet is based on using 3.6 quarts of water per 60 lbs of UHPC Mortar neat. The addition of fibers and/or aggregate will alter the physical strength values obtained.
UHPC Mortar should only be mixed by a power-driven mechanical mixer, such as a mortar mixer, grout mixer, pan mixer, or drill-mounted mixer. UHPC Mortar should be mixed for a minimum of 5 minutes to achieve a lump-free, uniform consistency. If required, fibers and aggregates should be added after 5 minutes and remixed until uniform. Do not retemper the material.
UHPC Mortar can be ground and polished but is not designed to be used as a decorative topping. Rapid Set® TRU® Self-Leveling, TRU® PC or TRU® SP are designed to be used as a decorative topping.