... Control-40) on the surface tension, hydration process and pore structure of BFS cement pastes are studied experimentally. Mechanical properties and deformation of both BFS cement paste and concrete are also measured. The test results show that the addition of SRA results in lower compressive...

... with Rietveld refinement. The hydration behaviour, phase assemblage evolution and mechanical performance of the cements were examined using isothermal calorimetry, XRD, thermogravimetric analysis and compressive strength testing, respectively, up to 90 days of curing. It is demonstrated that LC can be used...

... the porosity and stabilising phase transitions during hydration. The results showed that bismuth oxide and zirconia additives led to high radiopacity (7 and 3.5 millimetres of equivalent aluminium, respectively), good biological properties and a significant impact on strength in dental applications. 05 12...

... was studied using isothermal calorimetry test, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy and other analytical methods. The results showed that the LAFS rapidly generated a large amount of ettringite and promoted the formation of calcium silicate hydrate in the cement paste...

..., thermogravimetric analysis and scanning electron microscopy) were used to determine the effects of changes in gypsum content on the hydration and mechanical properties of cement mixed with an accelerator at different temperatures. The results showed that an increase in the gypsum content of the cement promoted...

...Maosen Li; Xiao Liang; Long Chen; Shuhua Liu Steel slag (SS) is a by-product of the steel industry, and its recycling is of great significance. In this study, the influence of SS fineness and curing regimes on the hydration properties of cement and the effects of SS content on the compressive...

...Xu Dongyu; Chen Huaicheng; Hao Longlong; Zhao Hongyi; Guan Xuemao; Hu Yan; Sha Fei The ultrasonic pitch–catch method was used to study the hydration behaviour of Portland cement paste with sodium gluconate (SG) additive using a tailor-made piezoelectric transducer. X-ray diffraction analysis showed...

... environmentally friendly cement. The effect of OSP on the hydration and strength development of MPC was studied. An axial compression experiment including 45 cuboid specimens was executed to investigate the compressive strength, failure mode, stress–strain relationship, and energy absorption of MPC mixing...

... of the production of ettringite, setting times were decreased. The maximal hydration temperature increased in concretes containing 40 wt% CSA but dropped in concretes with 20 wt% replacement. The drop was caused by a lack of accessible sulfates, which limited the synthesis of ettringite. In comparison to OPC...

... complete understanding of the phase evolution under chloride environments. 28 12 2021 19 05 2022 ICE Publishing: All rights reserved 2022 C₃A calcium chloride hydration monosulfoaluminate scanning transmission X-ray microscopy Tricalcium aluminate...

... (SCMs) influences the properties of cement-based materials. To study the synergistic effect quantitatively, the hydration heat, hydration products and porosity of cement pastes with different binders were investigated. Test results showed that the synergistic effect between LP and fly ash (FA) or slag...

...Jun Chang; Xin Yu; Xiaopeng Shang; Jiuye Zhao; Yangyang Zhang To better investigate and understand the hydration of calcium sulfoaluminate (CSA) cement, a theory reaction range for the hydration of CSA with calcium sulfate and calcium hydroxide was established by theoretical calculation...

... feature. The WPC pastes and mortars were fabricated with additions of nanosilica and substitutions of cement by limestone. An experimental campaign was carried out to study the effect of the combination of nanoparticles and mineral additions over the hydration process, whiteness and mechanical performance...

... water is added to cement, an exothermic reaction occurs and heat is liberated from the cement. Cement hydration thus results in an increase in the temperature of the concrete. The rate at which heat is generated from concrete is higher during the initial stages and then gradually reduces. In the case...

... of the sulfate source on the hydration of two laboratory-prepared BYF cements. One of the studied clinkers contained β-belite and orthorhombic ye'elimite (non-active) and the other contained α′_H-belite and pseudo-cubic ye'elimite (activated with borax during clinkering). The pastes...

...Dehui Wang; Caijun Shi; Zemei Wu; Linmei Wu; Shuncheng Xiang; Xiaoying Pan In this paper, the flowability, compressive strength, hydration heat, porosity and calcium hydroxide content of cement–silica fume–fly ash-based ultra-high-strength concrete (UHSC) incorporating either nano-silica...

...Yunsheng Zhang; Weiwei Zhu; Guojian Liu; Carlos Orozco; Paulo J. M. Monteiro The effects of three commonly used superplasticisers (SPs) – sulfonated naphthalene formaldehyde (SNF), sulfonated acetone formaldehyde (SAF) and polycarboxylates (PCB) – on the hydration process, products...

...Wang Qiang; Shi Mengxiao; Wang Dengquan Hydration heat evolutions and non-evaporable water contents of binders and reaction degrees of fly ash and ground granulated blast-furnace slag (GGBS) were tested to investigate the contributions of fly ash and GGBS to the early hydration heat of composite...

... ATMP doses markedly affect the microstructure, hydration and shrinkage of the magnesium oxysulfate cement. X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy analyses prove that the needle-like magnesium hydroxide sulfate hydrate – 5Mg(OH)₂...