Effects of waste sulfur content on properties of self-compacting concrete

Materiales de Construccion

A. Savić¹  T. Volkov-Husović²  M. Vlahović³  S. Martinović³ 

[1]University of Belgrade, Faculty of Civil Engineering

[2]University of Belgrade, Faculty of Technology and Metallurgy

[3]University of Belgrade, Institute of Chemistry, Technology and Metallurgy

关键词: concrete;    mixture proportion;    mechanical properties;    microstructure;    modulus of elasticity;   

DOI  :  10.3989/mc.2020.06919

来源: DOAJ

【 摘 要 】

Self-compacting concrete (SCC) contains fine mineral fillers such as limestone powder. The idea of this study was to partially replace limestone with waste sulfur since it is hydrophobic, insoluble in water and therefore chemically inert and to compare the properties of produced concrete samples. Fresh concrete proper­ties included: slump-flow, t500, V-funnel time, L-box ratio, segregation ratio, density, and entrained air content. Hardened concrete was tested for compressive, flexural and bond strengths, ultrasonic velocity, dynamic elas­ticity modulus, dynamic Poisson’s ratio, and microstructure. Flowability and segregation increased, while bulk density, compressive and flexural strength, dynamic elasticity modulus and ultrasonic velocity slight declined. Times t500 and V-funnel time, L-box ratio and entrained air changed insignificantly. Considering that all proper­ties should remain or improve in case of waste valorization and the criteria should set to satisfy requirements for SCC, this study proved that all mixtures can be used for structural applications.

【 授权许可】

Unknown