Results 31 to 40 of about 756,097 (272)

Study on hydration mechanism of calcium silicon slag composite geopolymer

矿业科学学报, 2022
In order to realize the synergistic utilization of calcium silicon slag, fly ash and blast-furnace slag, this paper researched on hydration mechanism of calcium silicon slag composite geopolymer through preparation experiments of the calcium silicon slag
Yang Zhijie, Zhang De, Kang Dong, Mi Shizhong, Yan Changwang, Zhang Ju   +5 more
doaj   +1 more source

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   +1 more source

Incorporation of aluminium in calcium-silicate-hydrates

Cement and Concrete Research, 2015
Calcium silicate hydrate (C-S-H) was synthetized at 20 °C to investigate the effect of aluminium uptake (Al/Si = 0–0.33) in the presence and absence of alkalis on the composition and the solubility of a C-S-H with a Ca/Si equal to 1.0.C-S-H incorporates aluminium readily resulting in the formation of C-A-S-H at Al/Si ≤ 0.1.
L’hôpital, E., Lothenbach, B., Le Saoût, G., Kulik, D., Scrivener, K.   +4 more
openaire   +4 more sources

Influence of Polymers on the Nucleation of Calcium Silicate Hydrates

Cement and Concrete Research, 2023
preprint (33 pages, 7 figures) and supp. info (32 pages, 51 figures, 4 tables)
Picker, Andreas, Nicoleau, Luc, Nonat, André, Labbez, Christophe, Cölfen, Helmut   +4 more
openaire   +3 more sources

Effect of water/cement ratio on micro-nanomechanical properties of the interface between cementitious matrix and steel microfibers in ultra-high performance cementitious composites

Revista IBRACON de Estruturas e Materiais, 2021
: Ultra-high performance concretes with steel microfibers have been studied in depth with the aim of producing more efficient and durable structures. The performance of these materials depends on the characteristics of the interface between microfibers ...
Vanessa Fernandes Cesari, Fernando Pelisser, Philippe Jean Paul Gleize, Milton Domingos Michel   +3 more
doaj   +1 more source

Assessment of the properties of sustainable concrete produced from quaternary blend of portland cement, glass powder, metakaolin and silica fume

Cleaner Engineering and Technology, 2021
The present study proposes a sustainable solution to the non-eco-friendly technique of cement production, without compromising the quality of produced concrete.
Gaurav Chand, Sugandh Kumar Happy, Shobha Ram   +2 more
doaj   +1 more source

Doping as a Way To Protect Silicate Chains in Calcium Silicate Hydrates [PDF]

ACS Sustainable Chemistry & Engineering, 2018
Abstract A critical challenge in reducing anthropogenic impacts on the environment is to decrease the carbon footprint of the cement industry. A key concern in the search for more sustainable cement designs is the understanding and control of the depolymerization process that eventually determines the integrity of their silicate ...
Dupuis, Romain, Dolado, Jorge, Surga, Jose, Ayuela, Andrés   +3 more
openaire   +3 more sources

Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm

International Journal of Optics, 2012
The excitation wavelength of conventional Tb3+-activated phosphor is near 270 nm. This study describes novel green-emitting Tb3+-activated amorphous calcium silicate by ultraviolet excitation at 378 nm.
Yoshiyuki Kojima, Masaaki Numazawa, Shinnosuke Kamei, Nobuyuki Nishimiya   +3 more
doaj   +1 more source

Improving the strength of metakaolin-lime based binder [PDF]

MATEC Web of Conferences
Pozzolanic reaction of low-calcium metakaolin (MK) with calcium hydroxide (CH) at ambient temperature in the presence of water forms a series of hydrated phases such as tetracalcium aluminate hydrate (C4AH13), calcium silicate hydrate (C-S-H) and calcium
Öztürk Mert, Tanaçan Leyla, Barış Kübra Ekiz   +2 more
doaj   +1 more source

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   +1 more source