Abstract
Synopsis The tensile strain capacities of concretes with densities between 1200 and 2300 kg/m3 are determined by means of a short-term stressing technique. The thermal strain capacity of lightweight aggregate concrete is up to 2½ times greater than that of flint gravel concrete of similar workability and strength. Lightweight aggregate concretes also have lower coeficients of thermal expansion and reach slightly higher maximum temperatures due to hydration. It is demonstrated that the main influencing parameter on tensile strain capacity is the strengthlelastic modulus ratio.
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