Development and Preliminary Application of PermanentForm of Ultra-high Performance Concrete

Abstract

Because ultra-high performance concrete (UHPC) has ultra-high strength and ultra-highdurability, it is a possible way for covering the outer surface of the reinforced concretestructure with UHPC permanent form to effectively improve the service life of reinforced concreteengineering in marine environment. The UHPC with compressive strength of 161.2 MPa, impermeabilitystrength of above 3 MPa, and electrical flux of 12 C was used to produce a form with the length,width and thickness of 1.5 m, 0.6 m and 1.5 cm respectively and with bearing load of 30 kN/m2,which is applied to the bottom plate and retaining wall of sluice engineering preliminarily. Thepractice proves that the UHPI permanent form will not deform during construction and can be firmlybonded with structural concrete. Therefore, it is feasible to use the UHPC permanent form as thesurface of reinforced concrete engineering in marine environment.

Keywords

• ultra-high performance concrete;permanent form;form structure;construction method