Results 11 to 20 of about 8,767 (273)

Molecular dynamics study on axial mechanical properties of calcium silicate hydrate

Materials Research Express, 2020
The axial mechanical properties of calcium silicate hydrate during uniaxial tension or stress have been investigated by molecular dynamic simulations.
Jianzhang Huang, Yue Fan, Xiaowei Ouyang, Qiang Han   +3 more
doaj   +2 more sources

lOH4− Affects the crystalline calcium silicate hydrate minerals synthesized by fly ash-based silicon extraction solution and lime milk

Case Studies in Construction Materials
When extracting amorphous silicon from fly ash using a strong alkaline solution, other elements such as Al also enter the silicon extraction solution in the form of AlOH4−.
Zhijie Yang, Dong Kang, Yang Jiao, Kaiyue Wang, Chenyang Fang, Zhiming Zhao, Wenhao Tang   +6 more
doaj   +2 more sources

Nano-level management of calcium silicate-hydrate nanoparticles structure formation during portland cement hydration process

MATEC Web of Conferences, 2018
Cement-containing building materials durability depends both on the original clinker composition and on the structure of hydrated portland cement compositions on micro and nanoscales.
Guryanov Alexander, Kozlov Vyacheslav, Sidorenko Yulia   +2 more
doaj   +2 more sources

Atomic-Level and Surface Structure of Calcium Silicate Hydrate Nanofoils. [PDF]

J Phys Chem C Nanomater Interfaces, 2023
Deciphering the calcium silicate hydrate (C-S-H) surface is crucial for unraveling the mechanisms of cement hydration and property development. Experimental observations of C-S-H in cement systems suggest a surface termination which is fundamentally ...
Casar Z, Mohamed AK, Bowen P, Scrivener K.   +3 more
europepmc   +4 more sources

Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis

Case Studies in Construction Materials
This study aimed to prepare poorly ordered calcium silicate hydrate (C-S-H) via the hydrothermal synthesis method, using ground quartz sand powder and lime as starting materials. The fineness of quartz sand powder under different grinding time and varied
Guangxiang Ji, Xiaoqin Peng, Shuping Wang, Jingjing Li, Keke Sun, Huihai Chi   +5 more
doaj   +2 more sources

Synthesis and additive manufacturing of calcium silicate hydrate scaffolds [PDF]

Journal of Materials Research and Technology, 2021
A Calcium silicate hydrate (CSH) powder containing above 60 wt% xonotlite (remaining being tobermorite, scawtite and calcite) were produced from lime and ordinary recycled soda-lime glass via simple hydrothermal synthesis route.
Ezgi Ogur, Renata Botti, Mauro Bortolotti, Paolo Colombo, Cekdar Vakifahmetoglu   +4 more
doaj   +2 more sources

Mesocrystalline calcium silicate hydrate: A bioinspired route toward elastic concrete materials. [PDF]

Sci Adv, 2017
Controlled aggregation of polymer-stabilized calcium silicate hydrate nanoparticles leads to elastic cementitious materials.
Picker A, Nicoleau L, Burghard Z, Bill J, Zlotnikov I, Labbez C, Nonat A, Cölfen H.   +7 more
europepmc   +2 more sources

Order and disorder in calcium–silicate–hydrate [PDF]

The Journal of Chemical Physics, 2014
Despite advances in the characterization and modeling of cement hydrates, the atomic order in Calcium–Silicate–Hydrate (C–S–H), the binding phase of cement, remains an open question. Indeed, in contrast to the former crystalline model, recent molecular models suggest that the nanoscale structure of C–S–H is amorphous.
Ulm, F.-J., Bauchy, Mathieu, Abdolhosseini Qomi, Mohammad Javad, Pellenq, Roland Jm   +3 more
openaire   +3 more sources

Hydration water and microstructure in calcium silicate and aluminate hydrates [PDF]

Journal of Physics: Condensed Matter, 2006
Understanding the state of the hydration water and the microstructure development in a cement paste is likely to be the key for the improvement of its ultimate strength and durability. In order to distinguish and characterize the reacted and unreacted water, the single-particle dynamics of water molecules in hydrated calcium silicates (C3S, C2S) and ...
FRATINI, EMILIANO, RIDI, FRANCESCA, S. H. CHEN, BAGLIONI, PIERO   +3 more
openaire   +2 more sources

Hydration of tricalcium silicate in the presence of synthetic calcium–silicate–hydrate

Journal of Materials Chemistry, 2009
The early age-hydration of tricalcium silicate, the main chemical compound in Portland cement, was studied in the presence of synthetic calcium silicate hydrate (C–S–H) addition having C/S ratios = 0.8 and 1.2. Isothermal conduction calorimetry, scanning electron microscopy, differential scanning calorimetry and 29Si MAS NMR were employed in order to ...
Alizadeh, Rouhollah, Raki, Laila, Makar, Jon M., Beaudoin, James J., Moudrakovski, Igor   +4 more
openaire   +3 more sources