Experimental Study of the Transient Temperature Distributions in Concrete

by Paul C. Hoffman, Villanova Univ, Villanova, United States,
Stanley K. Ciesielski, Villanova Univ, Villanova, United States,



Document Type: Proceeding Paper

Part of: Probabilistic Mechanics and Structural and Geotechnical Reliability

Abstract:

A small scale, preliminary experimental effort to quantify the randomness of the thermal diffusivity of concrete has been undertaken. Two sets of cylinders have been instrumented with thermocouples. The top surfaces of the cylinders are being subjected to temperatures ranging from 40 degrees Fahrenheit to 120 degrees Fahrenheit. The thermocouple readings are being logged every ten minutes over several three day durations. The measured temperatures at the specific thermocouple locations are being used to determine variations in the apparent thermal diffusivities of the concrete cylinders. The analytical technique consists of a best fit search with an iterative finite difference formulation.

Subject Headings: Concrete bridges | Diffusion (thermal) | Reinforced concrete | Temperature distribution | Cylinders | Diffusion (porous media) | Infrastructure construction

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