Promoting the sustainability of building industry is one major approaches to addressing energy depletion and climate change. Here, we developed scalable cementitious cooling composites (CCCs) with superior energy-free performance environmental applicability. Optical properties, phase composition, microstructure, silica reactivity are characterized analyzed. Onsite measurements conducted evaluat...

This paper describes the impact of hydrothermal conditions on strength properties and hydration processes belite cement mortar samples. The belite-rich binder was synthesized by sintering initial mixture raw materials (granite cutting waste, silica-gel waste from AlF3 production, natural materials) in a high-temperature furnace at temperature 1150 °C for 2 h. prepared clinker consists larnite, ...

Abstract The purpose of this study was the conversion calcareous lignite fly ash (LFA) into synthetic zeolite by hydrothermal, fusion‐hydrothermal and hydrothermal ‐sonochemical processes. Experiments were carried out using raw washed (5 N HCl) ash. Initially, fractional factorial experimental design used to plan experiments assess process parameters such as solid liquid ratio (S/L), silica alu...

Fiber-reinforced cement composites (FRCC) are widely used in the construction of houses and commercial buildings many countries such as United States, Kingdom, European countries, Asian China, India, Thailand. Conventionally, FRCC is manufactured from Portland cement, silica sand, cellulose fiber using so-called autoclaved curing under a designate hydrothermal condition to accelerate hydration ...

Nuclear magnetic resonance (NMR) relaxation experimentation is an effective technique for probing the dynamics of proton spins in porous media, but interpretation requires the application of appropriate spin-diffusion models. Molecular dynamics (MD) simulations of porous silicate-based systems containing a quasi-two-dimensional water-filled pore are presented. The MD simulations suggest that th...

Alkali-activated materials are promising low-carbon alternatives to Portland cement; however, there remains an absence of a fundamental understanding the effect different activator types on their reaction products at atomic scale. Solid-state 27Al and 29Si magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy 1H–29Si cross-polarization MAS NMR used reveal anion nanostructure,...

The structure of nanocrystalline calcium silicate hydrates (C-S-H) having Ca/Si ratios ranging between 0.57 ± 0.05 and 1.47 ± 0.04 was studied using an electron probe micro-analyser, powder X-ray diffraction, 29Si magic angle spinning NMR, and Fourier-transform infrared and synchrotron X-ray absorption spectroscopies. All samples can be described as nanocrystalline and defective tobermorite. At...