Mechanical Properties and Microstructure of Mechanical Sand Concrete at High Temperature based on Electron Microscopy

Abstract For sustainable development, sand-mixed concrete has been paid more and attention by researchers. In order to study the mechanical properties of sand-gravel concrete, five temperature levels natural cooling water were considered, sand-stone after high tested.. desert sand temperature, this paper designs a single factor test with replacement rate as variable. Five are watering adopted temperature. The influences rate, method fly ash content on compressive strength, axial strength static elastic modulus analyzed, deterioration model was established. From post-voltage voltage specimen sampling, X-ray diffraction (XRD) analysis scanning electron microscopy (SEM) observation, from micro level macro performance mechanism explain.