Influence of Ferronickel Slag 3 Powder as Supplementary Cementitious Material in Strength and Durability of Reactive Powder Concrete

Abstract

Reactive Powder Concrete (RPC) continues to grow and will become the primary construction material to substitute steel and conventional concrete in the near future. So far, the assumption about RPC is a high cost in production due to the use of high amounts of cement and requiring reactive materials. As concrete technology has advanced rapidly over the last three decades, the problems mentioned above can be overcome by using industrial waste materials such as cement replacement and aggregate replacement. Hence, this research examines the effect of ferronickel slag 3 (FNS 3) as a cement replacement on the mechanical strength and durability of RPC. In the current investigation, a low water-to-binder ratio of 0.2 was employed. FNS 3 has been ground intensively according to a wet-based milling method using a planetary ball mill. Various RPC mixtures with the proportion of FNS 3 (0%, 10%, and 20%) were produced. The effect of FNS 3 on the fresh RPC has been evaluated by using a setting time and workability test. In addition, the reactivity of FNS 3 is also assessed by using a Chapelle test. The results have revealed that the slump flow has reduced as the FNS 3 percentage in RPC combinations rose. The setting time of fresh RPC is sped up by adding FNS 3. The effect of FNS 3 on compressive strength starts at later ages onwards. FNS 3 has a minimal effect on increasing compressive strength against sulfuric acid attack. FNS 3 has a moderate level of pozzolanic activity. The results revealed that the slump flow reduced as the FNS 3 percentage in RPC combinations rose. The setting time of fresh RPC is sped up by the addition of FNS 3. The effect of FNS 3 on compressive strength starts at later ages onwards. FNS 3 has very little effect on increasing compressive strength against sulfuric acid attack. FNS 3 has a moderate level of pozzolanic activity.
Copyright © 2024 Praise Worthy Prize - All rights reserved.