This study investigated the influence of different curing conditions on compressive strength (CS) alkali activated concrete (AAC) specimens at ages 2, 28, and 90 days for structural utilization standardization process AAC instead OPC concrete. For this aim, 100% slag (S100), 75% 25% fly ash (S75FA25), 50% based (S50FA50) were produced. Based oven-curing (O), water-curing (W), ambient-curing (A)...

A comparison was made on the mechanical properties of three glass-ionomer cements, one of which was of experimental fiber-reinforcing and auto-curing type. Two others were proprietary auto-curing and light-activating cements. Biaxial flexure test was conducted on disc samples. Three-point bending test was also carried out on bar samples to determine modulus of elasticity and strength. All sampl...

The Bayer process utilises high concentrations of caustic and elevated temperature to liberate alumina from bauxite, for the production of aluminium and other chemicals. Within Australia, this process results in 40 million tonnes of mineral residues (Red mud) each year. Over the same period, the energy production sector will produce 14 million tonnes of coal combustion products (Fly ash). Both ...

This study reports on the microstructure, compressive strength, and drying shrinkage of metakaolin (MK) based geopolymers produced by partially replacing MK by oil palm ash (OPA). The OPA was used as raw material producing different molar ratios of SiO₂/Al₂O₃ and CaO/SiO₂. The geopolymer samples were cured at 80°C for 1, 2, or 4 hours and kept at ambient temperature until testing. The compressi...

Abstract Geopolymer concrete represents the future of green and sustainable concrete. It has a large impact on construction industry owing to its better performance than that conventional Portland cement This study aimed identify effect curing conditions physical, mechanical, microstructural properties specimens using ambient oven-curing. In experimental analysis, we tested slump setting time f...

Recent advancements in 3D bioprinting have led to the fabrication of more complex, more precise, and larger printed tissue constructs. As the field continues to advance, it is critical to develop quantitative benchmarks to compare different bio-inks for key cell-biomaterial interactions, including (1) cell sedimentation within the ink cartridge, (2) cell viability during extrusion, and (3) cell...

Low-calcium Fly ash-based alkali-activated materials (AAM) have some extraordinary properties such as high fire resistance and low shrinkage. However, they lower strength setting time when curing at ambient temperature conditions. Therefore, this research aimed to improve the of low-calcium fly AAM The effect changes in concentration modulus sodium silicate condition were studied on AAM. ash ty...