Results 11 to 20 of about 45,573,897 (286)
Nanoengineering Microstructure of Hybrid C–S–H/Silicene Gel
ACS Applied Materials & Interfaces, 2020 Two-dimensional (2D) materials have been incorporated into calcium silicate hydrate (C-S-H) gel to enhance its mechanical performance for decades, while the modified C-S-H gel exhibits poor toughness, tensile strength, and ductility. In this work, we report a new design strategy and synthesis route to strengthen C-S-H interface by intercalating a ...
Qi Zheng +6 more
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Investigation of Sulphate Attack on C-S-H Gel
Advanced Materials Research, 2011 C-S-H gel was prepared by extracting from the hardened cement paste, and was immersed in Na2SO4 solution and MgSO4 solution respectively. The microstructure of the C-S-H gel attacked by sulphate was observed by means of scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction.
Xiao Xin Feng, Xiu Juan Li, Qing Min Wei
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Cs-137 immobilization in C-S-H gel nanopores
Physical Chemistry Chemical Physics, 2018 Molecular scale simulations of Cs-137 adsorption in a C-S-H gel: diffusion coefficients, residence times, and sorption sites per area.
Eduardo Duque-Redondo +3 more
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Hydration Kinetics and Gel Morphology of C-S-H
CONCREEP 10, 2015 Calcium-silicate hydrate (C-S-H) is the main binder in cement and concrete. It starts forming from the early stages of cement hydration and it progressively densifies as cement sets. C-S-H nanoscale building blocks form a cohesive gel, whose structure and mechanics are still poorly understood, in spite of its practical importance.
Ioannidou, K. +4 more
core +7 more sources
Estimation of the poroelastic properties of calcium-silicate-hydrate (C-S-H) gel
Materials & Design, 2016 Abstract Calcium-silicate-hydrate (C-S-H) gel is the only evolving porous material phase in cementitious composites and contributes the most to the engineering properties of concrete and other cementitious composites. Due to the difficulty in obtaining large size C-S-H gel from cementitious composites, the estimation of the poroelastic properties of ...
Hu, Chuanlin +4 more
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The Deterioration of C-S-H Gel in a Severe Sulfate Environment
SymmetryImmersion tests with 5 wt.% Na2SO4 solution were carried out to investigate the deterioration of calcium silicate hydrate (C-S-H) gel in a sulfate environment. C-S-H gels with different Ca/(Si + Al) molar ratios were used for comparison. Particular attention was paid to the changes in element composition and Si-O-Si chain structure of the C-S-H gel ...
Wei Liao, Chunhua Lu, Zhongzi Xu
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Cause of the fragile-to-strong transition observed in water confined in C-S-H gel [PDF]
The Journal of Chemical Physics, 2013 In this study, the rotational dynamics of hydration water confined in calcium-silicate-hydrate (C-S-H) gel with a water content of 22 wt.% was studied by broadband dielectric spectroscopy in broad temperature (110–300 K) and frequency (10−1–108 Hz) ranges.
Monasterio, Manuel +4 more
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Study on the Mechanism of Magnesium Sulfate to Cement and C-S-H Gel
Advanced Materials Research, 2011 The microstructure of cement test block and the C-S-H gel attacked by magnesium sulfate is observed by means of scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS)and X-ray diffraction(XRD).It is found that the presence of Mg2+ makes C-S-H gel decalcify, dissolve and decompose, which thereby increasing the erosion of SO42- on the ...
Xiu Juan Li
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C-S-H gel dissolution kinetics: first results
, 2011 Portland cement is a major component of the engineered barrier system in proposed repositories for low and intermediate-level radioactive waste. C-S-H gel, which constitutes at least 60% of the fully hydrated Portland cement paste, controls the durability and barrier properties of cement.
Trapote-Barreira, A. +4 more
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The nanostructure and degradation of C-S-H in Portland and blended cements [PDF]
, 2007 The microstructure and composition of water and KOH activated hardened pastes of commercial neat white Portland cement (WPC) and blends with 30% fly ash (PFA) have been characterised using a multi-technique approach, With particular emphasis on the ...
Oliveira Morais de Sousa Girão, Ana Violeta
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