Mechanical Properties and Durability of High- Performance Concrete


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Title: Mechanical Properties and Durability of High- Performance Concrete

Author(s): R. L. Silveira, J. M. Calixto, and J. T. Fontoura

Publication: Special Publication

Volume: 186


Appears on pages(s): 655-670

Keywords: carbonation; concretes; durability; high-performance concretes; mechanical properties

Date: 5/1/1999

The results of an experimental investigation on the mechanical properties and durability of high performance concrete are presented. The concrete was produced with two types of cement, two different aggregates (shingle and granite) and addition of silica fume. The compressive and splitting tensile strength as well as the secant modulus of elasticity were evaluated on concrete having compressive strength up to 90 MPa and ages from 16 hours to 91 days. The complete stress-strain curve in compression was obtained at 28 days in a strain controlled mode. The durability tests include abrasion resistance, water permeability and carbonation depth. The results indicate that the mechanical properties investigated have different developments with respect to time. They also show expressively the effect of the different coarse additionally demonstrates significant reduction in water permeability, porosity abrasion resistance. High-performance concrete also proved to be more resistant to carbonation even under poor curing conditions, and higher CO2 concentrations.