Results 31 to 40 of about 208,381 (311)

Effect of Fly Ash Belite Cement on Hydration Performance of Portland Cement

Crystals, 2021
Fly ash belite cement is a green, low carbon cementitious material, mainly composed of hydraulic minerals of dicalcium silicate and calcium aluminate.
Yongfan Gong, Jianming Yang, Haifeng Sun, Fei Xu   +3 more
doaj   +1 more source

Calculation of Constrained Stress in Expansive Mortar with a Composite Creep Model

Advances in Materials Science and Engineering, 2016
The creep phenomenon of hardening cement paste mixed with an expansive additive was modeled by considering the creep performance of hydration products of cement and expansive additive.
Hyeonggil Choi, Bongsuk Cho
doaj   +1 more source

Effect of polymeric aluminum on hydration hardening characteristics of lithium slag-cement composite cementitious materials

矿业科学学报, 2019
Lithium slag is used as a supplementary cementitious material in cement-based materials due to its pozzolanic activity,but its lower hydration activity leads to a decline in the mechanical properties and durability of the cement-based material.In this ...
Wang Yiren, Wang Dongmin, Zhai Mengyi, Li Xiaolong   +3 more
doaj   +1 more source

Applications of Solid-State Nuclear Magnetic Resonance Spectroscopy in Cementitious Materials Research

Chinese Journal of Magnetic Resonance, 2020
Cementitious materials have complex compositions and structures. Characterization of the hydration processes, and compositions and structure of productions of cementitious materials is challenging.
WANG Ke, ZHANG Ying-hua, LI Yu-qing, ZOU Ding-hua   +3 more
doaj   +1 more source

Atomic and nano-scale characterization of a 50-year-old hydrated C3S paste [PDF]

, 2015
This paper investigates the atomic and nano-scale structures of a 50-year-old hydrated alite paste. Imaged by TEM, the outer product C-S-H fibers are composed of particles that are 1.5-2 nm thick and several tens of nanometers long.
Bae, S, Emwas, AH, Geng, G, Hernández-Cruz, D, Kilcoyne, DA, Monteiro, PJM, Taylor, R   +6 more
core   +1 more source

Physico-chemical research of the processes of hydration of cements [PDF]

E3S Web of Conferences
The activating effect of phosphoanhydrite on cement hydration is strongly supported by the results obtained from various physico-chemical analyses, including IR spectroscopy, X-ray phase analysis, and differential thermal analysis.
Lutfullaeva Nargiza, Egamberdiev Elmurod, Ergashev Yorqinjon, Alamov Umid, Shamuratova Shohida, Usmanxadjaeva Iroda, Tukhtamushova Anisakhon, Saparov Bobur   +7 more
doaj   +1 more source

Improvement of Mechanical Properties and Microstructure of Cementitious Materials in a Hot-Dry Environment

Crystals, 2022
The hot-dry environment in high geothermal tunnels negatively affects the development of properties of cementitious materials. In order to improve the mechanical properties of cementitious materials in such environments, a proper curing system was ...
Zhanjun Xu, Xiaokun Han, Kaiwen Feng, Weizhen Zhang, Kunlin Ma   +4 more
doaj   +1 more source

Early and late hydration of supersulphated cements of blast furnace slag with fluorgypsum

Materiales de Construccion, 2015
The hydration, strength development and composition of hydration products of supersulphated cements were characterized from the first 48 hours up to 360 days.
M. E. Bazaldúa-Medellín, A. F. Fuentes, A. Gorokhovsky, J. I. Escalante-García   +3 more
doaj   +1 more source

On the global hydration kinetics of tricalcium silicate cement

, 1996
We reconsider a number of measurements for the overall hydration kinetics of tricalcium silicate pastes having an initial water to cement weight ratio close to 0.5.
A.R. Brough, C.M. Dobson, D. Damidot, D.A. Kessler, E.H. Oelkers, F. Tzschichholz, F. Tzschichholz, G. Sauthoff, H. F. W. Taylor, H. Justnes, H. Zanni, H.M. Jennings, I. Odler, J. G. Engelhardt, J. Hjorth, M. Tarrida, M.D. Cohen, P. Barret, R. Lovett, S. Tsumura, S.U. Al-Dulaijan, T. Knudsen, V. Raghavan   +22 more
core   +1 more source

Effect of hydration products composition on high temperature resistance of geopolymers

Journal of Materials Research and Technology
Geopolymer exhibits better high temperature resistance than Portland cement, which makes it an excellent alternative cementitious component for fireproof building materials.
Yulong Liu, Chao Li, Jinbang Wang, Dong Li, Zonghui Zhou, Xiuzhi Zhang, Yongbo Huang, Peng Du   +7 more
doaj   +1 more source