Search for: [Abstract = "The compression ratios of strength for 7 to 28 days obtained in this study for lightweight concrete were between 0.67\-0.8. rate of tensile strength to compressive strength of ordinary concretes, which is approximately 10, this ratio is about 13.5 to\-17.8 in selected and optimal lightweight concretes in this research, which can be considered good indirect tensile strength for structural lightweight concretes."]