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Evaluation of Compressive Strength for High-Strength Concrete by Pulse Velocity Method

by R. Sri Ravindrarajah, Univ of Technology, Sydney,



Document Type: Proceeding Paper

Part of: Nondestructive Testing of Concrete Elements and Structures

Abstract:

Development of compressive strength and pulse velocity for high-strength concrete from the age of 5 hours are studied in relation to cementitious material types and curing conditions. Normal portland cement, blast-furnace slag cement and silica fume are used individually or in combination. Results show that: a) silica fume in concrete increases the pulse velocity; b) pulse velocity and strength are ower for air-cured concrete than for water-cured concrete; and c) the relationship between strength and pulse velocity is given by an exponential curve which is less influenced by curing or cementitious material types. Evaluation of in-situ concrete strength based on paste efficiency concept is examined.

Subject Headings: Strength of materials | Compressive strength | High-strength concrete | Concrete | Cement | Silica | Nondestructive tests

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