... I 3 7 10 20 30 50 I00 300 540 Age :days Fig. 3. Typicalvariation of staticmodulus of expandedslate structural lightweight concrete with age and curing condition -X 20 Storage: moist room l4I I 3 7 10 20 30 50 I00 300 540 Age :days Fig. 4. Influence of age and curing condition on the dynamic modulus...

... that, for each type of aggregate and each condition of storage, the impact strength increased with compressive strength at an increasing rate. The relationship between impact strength and compressive strength varied with the type of coarse aggregate and the method of storage. For the same compressive strength...