Saridemir, MustafaYildirim, Ahmet2024-11-072024-11-0720222352-7102https://doi.org/10.1016/j.jobe.2022.104748https://hdl.handle.net/11480/13938This paper investigates the effect of elevated temperatures on the properties of high strength mortars (HSMs) containing ground calcined diatomite (GCD) produced with limestone sand (LS). In the HSM mixtures at a water-binder ratio of 0.35, GCD is employed in place of cement at replacement ratios of 0, 5, 10, 15 and 20% by weight. The mechanical and microstructural properties of HSMs containing GCD produced with LS are investigated separately at different curing days and elevated temperatures. The results of these properties have indicated that GCD can be employed instead of cement in the HSMs containing GCD produced with LS, and GCD content up to %15 improve the mechanical properties of HSMs. Especially, deteriorations and cracks in the HSMs are seen due to the calcification and expansion of LS used as sand in the mixtures at 1000 degrees C temperature, and consequently, high decreases in the mechanical properties are observed.eninfo:eu-repo/semantics/closedAccessHigh strength mortarsGround calcined-diatomiteElevated temperatureMicrostructureArticle5610.1016/j.jobe.2022.1047482-s2.0-85132506375Q1WOS:000817844400002Q1