This report details the laboratory developmental work on producing performance concrete for highway applications. High performance concrete (HPC) is defined as concrete with much higher early strength and greatly enhanced durability against freezing and thawing in comparison with conventional concrete. Very high strength (VHS) concrete is one of the three categories of HPC investigated in this program. The objective is to obtain information on the mechanical behavior of VHS concrete. The laboratory investigation consisted of tests for both fresh or plastic concrete and hardened concrete. The plastic concrete tests included slump, air content, etc. The results of these tests are presented in volume 2 of this report series 'Production of high performance concrete'. The hardened concrete tests include compression tests for strength and modulus of elasticity, tension tests for tensile strength and flexural modulus, freezing-thawing tests for durability factor; shrinkage tests; creep tests; rapid chloride permeability tests; tests for AC impedance; and tests for bond between concrete and steel reinforcement.
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