This study aims to predict the autogenous shrinkage of alkali-activated concrete (AAC) based on slag and fly ash. A variety analytical numerical models are available for prediction ordinary Portland cement (OPC) concrete, but these found show dramatic discrepancies when applied AAC due different behaviours two systems. In this study, a new approach is developed (AAS) slag-fly ash (AASF) from ex...

Autogenous shrinkage may be a critical issue concerning the use of limestone-calcined clay-cement (LC3) in high-performance concrete and 3D printable cementitious materials, which have relatively low water to binder (W/B) ratio. Adding an internal curing agent, i.e., superabsorbent polymer (SAP), could viable solution this context. However, employing SAP (without adding additional water) also i...

This paper examines the influence of biochar on properties alkali-activated slag pastes using two activator solutions, namely NaOH and Na2CO3. The demonstrated different absorption kinetics in mixture solutions. with showed a delay heat flow peak, compared to without biochar, but cumulative release these at later hours was increased, biochar. It found that use reduced autogenous shrinkage reduc...

The crack resistance of face slab concretes to various shrinkages is crucial for the structural integrity and normal operation concrete-faced rockfill dams (CFRDs). In this work, effects fly ash with four dosages (i.e., 10%, 20%, 30% 40%) on drying shrinkage, autogenous shrinkage cracking concrete were studied. Besides, difference in behavior due addition was revealed from viewpoint pore struct...

Earth-based materials are currently receiving high attention, as they considered sustainable. In addition, the reuse of waste and more particularly recycled aggregates can boost circular economy while reducing landfilling mineral resource depletion. Incorporating in earth concrete be an innovative way to valorize them. However, investigations required concerning their long-term behavior. Such a...