Mining activities are inevitable for the growing industrialization and urbanization in world. Disposal of mine tailings creates a severe impact to environment ultimately society. Identifying applications as potential secondary raw materials would help mining industries achieving circular economy. Alkali activation their utilization building or backfill sites is one such popular technique. In th...

Alkali-activated materials (AAM) and hybrid cements (HC) have become sustainable alternatives to Portland cement (PC) due their low carbon footprint. The main differences between AAM HC lie in content of clinker (none the usually lower than 30% for HCs) type activator used (strong alkaline solutions small amounts solid alkalis HC). Durability problems related with microstructural changes decalc...

Abstract Alkali-activated fly ash/GGBS concrete (AAFGC) is a new blended that has been studied by many researchers due to its environmental advantages and better technological characteristics. However, the effect of various factors on AAFGC fresh hardened properties not yet thoroughly studied. The literature mainly describes combination NaOH Na2SiO3 as an activator for AAFGC’s activation, but a...

Alkali Activated Slag Concrete (AASC) mixes are manufactured by activating ground granulated blast furnace slag (GGBFS) using sodium hydroxide and sodium silicate solutions. The aim of the present experimental research was to investigate the effect of increasing the dosages of sodium oxide (Na2O, in the range of 4 to 8%) and the activator modulus (Ms) (i.e. the SiO2/Na2O ratio, in the range of ...

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...

Compared with conventional two-part alkali-activated materials (AAMs), one-part AAMs have several advantages, especially the simple production using only water similar to ordinary Portland cement. However, are much less researched, in terms of rheology. Understanding rheological behavior such binders is a crucial step for their production, placement, and application construction industry. This ...

Alkali-activated binders (AABs) stand out as promising candidates to replace ordinary Portland cement (OPC) since waste can be used raw material for their manufacture. This study addresses the environmental feasibility of using weathered bottom ash (WBA) and metakaolin (MK) alkali-activated binder precursors (AA-WBA/MK). Different proportions WBA MK were mixed (100/0, 75/25, 50/50, 25/75, 0/100...