Effects of nonionic surfactants and external factors on stability of latex in cement paste
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.45946
Abstract: To clarify why different surfactants affect stability of latex in cement paste and why many latexes qualified in standard stability test still coagulate when mixed with cement, several kinds of nonionic surfactants with different structures… read more here.
Keywords: stability; cement paste; stability latex; latex cement ... See more keywords
Evaluation of the mechanical properties of high-strength cement paste at elevated temperatures using metakaolin
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Thermal Analysis and Calorimetry"
DOI: 10.1007/s10973-020-09992-2
Abstract: This paper presents a wide experimental study, in which it evaluates the performance of high-strength paste exposed to elevated temperatures up to 900 °C. Several factors have been investigated at the age of 90 days, i.e. metakaolin… read more here.
Keywords: strength; high strength; cement paste; mechanical properties ... See more keywords
Artificial Neural Network and NLR techniques to predict the rheological properties and compression strength of cement past modified with nanoclay
Sign Up to like & getrecommendations! Published in 2020 at "Ain Shams Engineering Journal"
DOI: 10.1016/j.asej.2020.07.033
Abstract: Abstract One of the most important industries and building operations that cause carbon dioxide emissions is the cement and concrete-related industries that consume about 6 million Btus per metric ton and release about 1 metric… read more here.
Keywords: strength cement; cement; cement paste; modified nanoclay ... See more keywords
Dispersion of graphene oxide agglomerates in cement paste and its effects on electrical resistivity and flexural strength
Sign Up to like & getrecommendations! Published in 2018 at "Cement and Concrete Composites"
DOI: 10.1016/j.cemconcomp.2018.06.008
Abstract: Abstract Actual dispersion of graphene oxide (GO) in cement paste was investigated by using both X-ray computed tomography and X-ray photoelectron spectroscopy. It was found that GO nanosheets are mainly agglomerated, as an individual phase,… read more here.
Keywords: flexural strength; cement; cement paste; dispersion ... See more keywords
Coupling statistical indentation and microscopy to evaluate micromechanical properties of materials: Application to viscoelastic behavior of irradiated mortars
Sign Up to like & getrecommendations! Published in 2018 at "Cement and Concrete Composites"
DOI: 10.1016/j.cemconcomp.2018.09.008
Abstract: Abstract In this work, an original method coupling statistical indentation and 3D microscope image analysis for heterogenous materials characterization is developed. Statistical microindentation test results performed on γ-irradiated and pristine mortar specimens are presented and… read more here.
Keywords: microscopy; coupling statistical; statistical indentation; cement paste ... See more keywords
Multiscale modeling of ion diffusion in cement paste: electrical double layer effects
Sign Up to like & getrecommendations! Published in 2019 at "Cement and Concrete Composites"
DOI: 10.1016/j.cemconcomp.2018.11.008
Abstract: Abstract Understanding the mechanism of ion diffusion in hardened cement paste is of great importance for predicting long-term durability of concrete structures. Gel pores in calcium silicate hydrate (C S H) phase forms dominant pathway… read more here.
Keywords: double layer; ion; cement paste; layer ... See more keywords
Parallel superposition rheology of cement pastes
Sign Up to like & getrecommendations! Published in 2019 at "Cement and Concrete Composites"
DOI: 10.1016/j.cemconcomp.2019.103393
Abstract: Abstract During placement cement-based materials are subject to different types of loadings, including high-rate shearing during pumping, hydrostatic pressure in formworks, etc. At the same time, the material undergoes microstructural evolution due to hydration that… read more here.
Keywords: rheology; cement; cement paste; superposition rheology ... See more keywords
Effect of potassium humate as humic substances from river sediments on the rheology, the hydration and the strength development of a cement paste
Sign Up to like & getrecommendations! Published in 2019 at "Cement and Concrete Composites"
DOI: 10.1016/j.cemconcomp.2019.103400
Abstract: Abstract Dredged river sediments may contain various types of organic matter that can affect the properties of a cement matrix, with the most representative part of such organic matter consisting of humic substances (HS). This… read more here.
Keywords: strength; rheology; cement; cement paste ... See more keywords
Rheological behavior of cement paste with nano-Fe3O4 under magnetic field: Magneto-rheological responses and conceptual calculations
Sign Up to like & getrecommendations! Published in 2021 at "Cement and Concrete Composites"
DOI: 10.1016/j.cemconcomp.2021.104035
Abstract: Abstract The magneto-rheological responses of cement paste with nano-Fe3O4 particles are experimentally investigated. The estimated magneto-dynamic force between two neighboring nanoparticles and equilibrium movement velocity of the nanoparticles in cement-based suspensions are calculated. Results show… read more here.
Keywords: nano fe3o4; paste; rheological responses; magnetic field ... See more keywords
Rheology of hydrating cement paste: Crossover between two aging processes
Sign Up to like & getrecommendations! Published in 2017 at "Cement and Concrete Research"
DOI: 10.1016/j.cemconres.2017.02.034
Abstract: Abstract The roles of applied strain and temperature on the hydration dynamics of cement paste are uncovered in the present study. We find that the system hardens over time through two different aging processes. The… read more here.
Keywords: aging processes; rheology; processes rheology; cement paste ... See more keywords
The effect of calcium lignosulfonate on ettringite formation in cement paste
Sign Up to like & getrecommendations! Published in 2018 at "Cement and Concrete Research"
DOI: 10.1016/j.cemconres.2018.02.021
Abstract: Abstract The effect of a softwood calcium lignosulfonate, LSs, on the ettringite formed in cement paste was investigated. Two Portland cements, mainly differing in surface area and C 3 A content, were used. The effect… read more here.
Keywords: effect; cement; cement paste; calcium lignosulfonate ... See more keywords