UHPC型枠設計ガイド：圧力、気密性、表面仕上げ、繊維配向、養生、および材料選定
Why UHPC Formwork Requires A Different Design Approach UHPC formwork controls much more than the external shape of a component. It also affects leakage, surface quality, dimensional accuracy, casting speed, fiber orientation, curing conditions, and the final mechanical performance of the material. Ultra-high-performance concrete is a dense cementitious composite. FHWA defines UHPC as a material with optimized granular packing, a water-to-cementitious-material ratio below 0.25, internal discontinuous fiber reinforcement, compressive strength above 150 MPa, and sustained post-cracking tensile strength above 5 MPa. These properties do not mean that formwork must resist the final 150 MPa compressive strength. Formwork supports fresh UHPC, its own weight, equipment loads, workers, and temporary construction forces. […]