Effects of calcined clay, sawdust ash and chemical admixtures on Strength and Properties of concrete for pavement and flooring applications using Taguchi approach

Case Studies in Construction Materials

Olufunke O. Akinkurolere¹  Daniel Oluwafemi Oguntayo²  Adebayo Olatunbosun Sojobi³  Temitope Funmilayo Awolusi⁴  B.O. Orogbade⁵ 

[1] Corresponding author at: Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong, China.;The Hong Kong Polytechnic University, Hong Kong, China;Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong, China;Department of Civil Engineering, Afe Babalola University, Ekiti State, Nigeria;Landmark University SDG 9 (Industry, Innovation and Infrastructure Research Group), Nigeria;

关键词: Abrasion;    Skid resistance;    Strength;    Calcined clay;    Sawdust ash;    Pavement concrete;   

DOI  :  

来源: DOAJ

【 摘 要 】

Strength, abrasion and skid resistance are crucial factors for assessing the performance of pavement concrete and concrete for flooring applications. Due to sustainability concerns and global climate change, various supplementary (pozzolanic) cementitious materials (SCMs) are increasingly promoted for use as cement replacement in pavement concrete without considering their effects on the strength, abrasion and skid resistance. In addition, chemical admixtures are often added to improve workability of pavement concrete. Therefore, this study investigates the effects of calcined clay and sawdust ash utilized as cement replacements and two kinds of chemical admixtures on thestrength, abrasion and skid resistance of concrete for pavement and flooring applications. Calcined clay is preferable to sawdust ash as partial cement replacement in pavement concrete as it gives higher flexural strength, skid resistanceand similar abrasion value. However, sawdust ash is preferable for flooring applications owing to its lower water absorption and higher compressive strength. The optimum calcined clay is 5% while the optimum crystalline-based admixture is 1%. More studies are required to guide correct applications of SCM in sustainable concrete pavement.

【 授权许可】

Unknown