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Minnesota Bio-Business Center / 3rd Street Ramp
Owner: City of Rochester
Location: Rochester, MN
General Contractor: Adolfson and Peterson
Architect/Engineer: Hammel, Green & Abrahamson
Concrete Supplier: Ready Mix Concrete, LLC
Construction: 2008
Project Facts:
28 day post tension strengths averaged 6,500 psi. The concrete was pumped and placed at an 8" slump. Consistent air contents, finishability and extended slump life despite the hot weather were important requirements from the concrete mix. Vertical surfaces also needed clean finishes with minimum bugholes.
GRT Products Used:
- Polychem SPC: High Range Water Reducer for flowing concrete
- Polychem VR: Vinsol Resin air entraining agent
- Polychem KB-1000: Mid-Range water reducer/finishing aid
- Polychem R: Set retarding admixture
- Polychem CI: Corrosion inhibiting admixture
- Micro-Silica: Ultra fine pozzolan
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