... as supplementary cementitious material ( SCM ) around the world, it becomes very important to reliably predict the energy requirements for the industrial calcination of clays. In this study, a simple mathematical model is developed to estimate the calcination energy required for the conversion of kaolinite...

... 2024 Emerald Publishing Limited: All rights reserved 2025 ettringite modelling mortars paste waste valorisation UN SDG 13: Climate action The environment can be significantly influenced by cement manufacture, which consumes large amounts of natural resources and generates huge...

...Mohammad Javad Mahmoodi; Masoumeh Khamehchi; Mohammad Safi A comprehensive semi-empirical model was developed to predict the drying shrinkage strain (DSS) of concrete reinforced with graphene oxide nanosheets (GONs). The model includes various internal and external parameters. The effects of three...

... in the laboratory. Experimental results show that the dielectric constants decrease linearly with increase of temperature and decreases exponentially with the increase of frequency. Based on the experimental rules, a new dielectric model including frequency and temperature is established and verified by experiments...

... by the RFA. Strength development models for UHPC with different RFA contents under SA were developed. Table 1. Technical indices of NFA and RFA   Fineness modulus Bulk density: kg/m³ Apparent density: kg/m³ Water absorption: % Crushing value...

.... This method was modified to prevent precipitation of calcium carbonate (CaCO_{3) by washing the filtered suspension with 6% acetic acid (AA) solution. The filter paper and contents were placed in an oven at 105°C until a constant weight was reached. Thermodynamic modelling was carried out using}...

... process and mechanisms of piles subjected to crystallisation attack. A theoretical model for predicting the service life of a concrete pile is proposed, taking both the environmental factors and pile properties into consideration. Laboratory tests of fully or partially immersed concrete specimens...

... the magnitude of the attractive interparticle forces. The aim of the current research is to present a simple model that takes into account the interparticle forces and the variation of porosity of the cement powder bed under external stress (consolidation). This is then used to explain the cohesion...

... of transformations ranging from +18 to +78 kJ/mol. ICE Publishing: All rights reserved 2018 crystallography/crystal structure modelling thermodynamics The mineral ye'elimite (Ca₄Al₆O₁₂.SO_{4) has its name from its natural occurrence in the Hatrurim basin, west}...

... occurring within the XRD-amorphous phases. These processes modified the initial microstructure and the resulting mechanical performance. The micromechanical modelling used in this work contributes to understanding of the performance origin and reveals the role of individual hydrates in volume filling...

... the completeness of the reaction. ettringite modelling thermodynamics Portland cement (PC) production is one of the most energy-intensive processes in common use. In 2015, cement production was equal to about 4·5 Gt (Activity Report (ECA, 2015); Shen and Qian, 2015) and contributed almost 7...

... heterogeneity. A linear response between peak strength or volumetric strain and heterogeneity was observed in the K₀DCGF test, and this was independent of the selection of the describing variable. The use of CCMs to model and reconstruct TGD profiles offers potential advantages because...

... for this computational model is shown in Figure 3 . The gas and solid phase in a cyclone is assumed to be completely back-mixed. As shown in Figure 3 , M_s is the mass of solids entering a cyclone; M_g is the mass of air entering a cyclone; and M_se is the mass...

... with strätlingite and at a later age. In contrast to the thermodynamic modelling results, anhydrite persisted even at low calcium sulfate contents as the precipitation of AH₃ around the anhydrite grains seemed to lead to a chemical blocking. Calcium aluminate cements (CACs) can be used...

... 09 05 2017 ICE Publishing: All rights reserved 2017 mechanisms modelling superplasticisers Polycarboxylate-based superplasticisers (PCEs) with polyethylene glycol (PEG) pendants can fluidise concrete with an extremely small amount of water and maintain the fluidity much longer...

...) as a mineraliser, ground and blended with 5% anhydrite. The hydration mechanism of the resulting ACSA cement was investigated experimentally using quantitative X-ray diffraction and thermogravimetry, as well as by thermodynamic modelling. During the first hours, mainly alite reacts. Ye'elimite starts to dissolve...

... using displacement transducers and load cells. The study reported here adopted a numerical scheme of the zero-span tensile model to investigate the localised behaviour of SHCCs for strengthening cracked RC structures, focusing on the crack elongation performance and the reduced tensile strain...