Automated crack identification for cement paste
نویسندگان
چکیده
منابع مشابه
Decalcification shrinkage of cement paste
Decalcification of cement paste in concrete is associated with several modes of chemical degradation including leaching, carbonation and sulfate attack. The primary aim of the current study was to investigate the effects of decalcification under saturated conditions on the dimensional stability of cement paste. Thin (0.8 mm) specimens of tricalcium silicate (C3S) paste, white portland cement (W...
متن کاملOnset of cohesion in cement paste.
It is generally agreed that the cohesion of cement paste occurs through the formation of a network of nanoparticles of a calcium-silicate-hydrate ("C-S-H"). However, the mechanism by which these particles develop this cohesion has not been established. Here we propose a dielectric continuum model which includes all ionic interactions within a dispersion of C-S-H particles. It takes into account...
متن کاملDrying Shrinkage Mechanisms in Portland Cement Paste
The shrinkage mechanisms of portland cement paste were investigated from shrinkage, weight loss, and pore structure measurements using nitrogen sorption and mercury intrusion porosimetry (MIP). Thin samples (2.3 mm) of well-hydrated (165 d) pastes of 0.4 and 0.6 water-to-cement (W/C) ratios were dried directly from saturated surface dry state to 75%, SO%, 11%, and 0% relative humidity (rh). Fro...
متن کاملIdentification of viscoelastic C-S-H behavior in mature cement paste by FFT-based homogenization method
a r t i c l e i n f o A powerful and robust numerical homogenization method based on fast Fourier transform (FFT) is formulated to identify the viscoelastic behavior of calcium silicate hydrates (C-S-H) in hardened cement paste from its heterogeneous composition. The identification is contingent upon the linearity of the creep law. To characterize cement paste microstructure, the model develope...
متن کاملAutomated cement segmentation in
11 Vertebroplasty is a minimally invasive procedure with many benefits. However, the 12 procedure is not without risks and complications. Leakage of the cement out of the 13 vertebral body and into the surrounding tissues is one of the most serious compli14 cations of vertebroplasty. Cement can leak into spinal canal, venous system, soft 15 tissues, lungs and intradiscal space, causing serious ...
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ژورنال
عنوان ژورنال: Cement and Concrete Research
سال: 1995
ISSN: 0008-8846
DOI: 10.1016/0008-8846(95)00049-i