..., isothermal conduction calorimetry, ultrasonic pulse velocity ( UPV ) and mechanical strength measurements. The maximum heat release occurred earlier in the CSA2M system and UPV measurements revealed a more rapid increase in mechanical stiffness. The presence of alkalis accelerated the dissolution...

... range. Reaction kinetics and phase evolution were examined in pastes by calorimetry, thermogravimetric analysis ( TGA ) and in situ quantitative X-ray diffraction ( QXRD ) for 72 h of hydration, along with setting time and amplitude-sweep rheometry. Calorimetry showed that TEA and DIPA delayed...

... in the concrete, which may reduce the strength, crack resistance and impermeability of the cement matrix. Therefore, controlling the hydration activity of magnesium oxide is essential for ensuring its effectiveness as an expansive agent. calorimetry materials technology structural design sustainable...

... calorimetry, thermogravimetric analysis, in situ X-ray diffraction and chemical analysis of pore solution. This as yet unique combination of methods led to greater understanding of the hydration behaviour of the complex binder (cement–calcined clay). The results showed considerable differences depending...

...Zichen Lu; Xiangming Kong; Daniel Jansen; Chaoyang Zhang The effects of two alkanolamines, triethanolamine (TEA) and diethanol-isopropanolamine (DEIPA), on cement hydration were comparatively investigated by several techniques including calorimetry, in situ X-ray diffraction analysis and pore...

... 2020 13 08 2020 ICE Publishing: All rights reserved 2020 calorimetry clinkering/clinkering reactions compressive strength heavy metals reactivity The production of ordinary Portland cement (OPC) is well known to have a huge environmental footprint: its production consumes...

... in both the fresh and hardened state. 07 02 2019 04 05 2019 05 05 2019 ICE Publishing: All rights reserved 2019 alkali-activated cements calorimetry kinetics Alkali-activated cementitious materials (AAC) can be used as partial or total replacements of ordinary...

... in specimens cured at room temperature, reaching, in some mortar formulations, more than 80 MPa at 360 d with high initial development. Hydration reactions were significantly affected by both the citric acid and the increase in temperature, as confirmed by isothermal conduction calorimetry. The main hydration...

... by grinding calcined clay and limestone in a ratio of 2 : 1 with 2% gypsum. Blends with cement replacement level of 0, 10, 15, 20, 30 and 50% using LCCP were cast. The effect of LCCP on the hydration of cement was investigated using isothermal calorimetry and X-ray diffraction. Mortar and concrete samples...

..., isothermal conduction calorimetry, zeta potential and inductively coupled plasma–optical emission spectroscopy were employed to investigate the acceleration efficiency. Results show that the extent of the acceleration was dependent on the amount, the morphologies and the chemical composition of the C–S–H...

... al. (2011) also reported the phenomenon of rapid setting and hardening of sodium silicate-activated slag. The relatively fast setting time of AAS has restricted the development of this material in the industry. alkali-activated cements blast furnace slag calorimetry Sodium carbonate...

...: All rights reserved 2017 admixtures calorimetry rheological/rheological properties Geopolymers can be defined as a class of inorganic polymers having an amorphous structure composed of tetrahedral (SiO_{4)⁴⁻ and (AlO4)⁵⁻ sharing all the corners with each}...

... (K₂O): wt% 0·67 Titanium dioxide (TiO_{2): wt% 0·18 Manganese oxide (MnO): wt% 0·12 Sodium oxide (Na2O): wt% 0·09 Phosphorus pentoxide (P2O5): wt% 0·05 Chlorides (Cl): wt% 0·009 admixtures calorimetry compressive strength}...