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What is UHPC?

Ultra-High Performance Concrete (UHPC), is a high-strength, ductile material formulated by combining portland cement, silica fume, quartz flour, fine silica sand, high-range water reducer, water, and steel or organic fibers. The material provides compressive strengths up to 29,000 pounds per square inch (psi) and direct tensile strength of 1,000 - 1,800 psi (PCA, 2017).

Due to its excellent material properties UHPC can be used to enhance and rehabilitate concrete infrastructures while extending their service life and greatly reducing future maintenance cost.

Material Qualities

  • High tensile & compressive strength
  • Impermeability to water
  • Chemical and Chloride resistance
  • Superior abrasion resistance
  • Freeze/Thaw resistance
  • Rapid setting times

Numbers

  • Compressive:
    120 - 150 MPa (17k - 22k psi)
  • Flexural:
    15 - 25 MPa (2200 - 3600 psi)
  • Modulus of Elasticity:
    45 - 50 GPa (6500 - 7300 ksi) 

Durability

  • Freeze/Thaw (~300 cycles) 
    100%
  • Salt-scaling (loss of residue)
    < 60 g/m2 (< 0.013 lb/ft3) Abrasion (relative volume loss index): 1.7
  • Cl - permeability (total load)
    < 10 C

Source: PCA Portland Cement Association, 2017

Experience

Our team has 171 years of combined experience. Posillico and WALO have teamed up to bring our Ultra-High Performance Concrete rehabilitation methods to market and to help solve the deteriorating infrastructure problem.

By combining forces we have brought together over a century of infrastructure rehabilitation expertise and an accelerated bridge construction that can meet the demands of today's need for accelerated bridge rehabilitation (ABC) with lasting results.

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Bridge Deck Hydrodemolition and Structurally Deficient Bridges