Results 21 to 30 of about 146,363 (308)

Multiscale understanding of tricalcium silicate hydration reactions [PDF]

, 2017
Tricalcium silicate, the main constituent of Portland cement, hydrates to produce crystalline calcium hydroxide and calcium-silicate-hydrates (C-S-H) nanocrystalline gel. This hydration reaction is poorly understood at the nanoscale.
Cuesta-García, Ana María, Dapiaggi, Monica, García-Aranda, Miguel Ángel, Gómez-de-la-Torre, María de los Ángeles, Londono-Zuluaga, Diana, Sanfélix, Susana G., Santacruz-Cruz, María Isabel, Vallcorba, Oriol, Zea-Garcia, Jesus D.   +8 more
core   +4 more sources

Modified gypsum binder

MATEC Web of Conferences, 2018
Gypsum-based binder modified by clay has properties close to the gypsum binder and can be used as plaster formulations or mortars. There are several reasons and chief among them is the lack of scientific based theory of formation and hardening properties
Kodzoev M-B., Isachenko S., Kosarev S., Basova A., Skvortzov A., Asamatdinov M., Zhukov A.   +6 more
doaj   +1 more source

Discrete Optimization of Software-Controlled Modes of Heat Treatment of Concrete Products in Heat-Technological Facilities

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2019
In the article the technique of an assessment of modes of operation of the heat engineering equipment used for heat treatment of concrete products in the conditions of programcontrolled heat supply according to the pattern of “heating – isothermal ...
A. M. Niyakovskii, V. N. Romaniuk, Yu. V. Yatskevich, A. N. Chichko   +3 more
doaj   +1 more source

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

Efeito da pré-molhagem do agregado nas propriedades das argamassas com agregado reciclado deconcreto e agregado leve [PDF]

, 2019
This paper examines the suitability of partially replacing natural aggregate, sand, (NA) with recycled concrete aggregate (RCA) or lightweight aggregate (LWA) in mortars, under the hypothesis that pre-wetting aggregates would produce improvement in ...
Aponte Hernández, Diego Fernando, Barra Bizinotto, Marilda, Cavalcante Rocha, Janaíde, Jochem, Lidiane Fernanda   +3 more
core   +4 more sources

Morphological and Structural Evaluation of Hydration/Dehydration Stages of MgSO4 Filled Composite Silicone Foam for Thermal Energy Storage Applications [PDF]

, 2020
Salt hydrates, such as MgSO4·7H2O, are considered attractive materials for thermal energy storage, thanks to their high theoretical storage density. However, pure salt hydrates present some challenges in real application due to agglomeration, corrosion ...
Brancato, Vincenza, Bruzzaniti, Paolo, Cabeza, Luisa F., Calabrese, Luigi, Caprì, Angela, Frazzica, Andrea, Milone, Candida, Palomba, Valeria, Piperopoulos, Elpida, Proverbio, Edoardo   +9 more
core   +2 more sources

Rietveld Quantitative Phase Analysis of Oil Well Cement: in Situ Hydration Study at 150 Bars and 150 °C [PDF]

, 2019
Oil and gas well cements are multimineral materials that hydrate under high pressure and temperature. Their overall reactivity at early ages is studied by a number of techniques including through the use of the consistometer.
Cuesta-Garcia, Ana Maria, Fraga, Edmundo, García-Aranda, Miguel Ángel, Gomez-de-la-Torre, Maria de los Angeles, Yañez-Casal, Armando, Zea-Garcia, Jesus D.   +5 more
core   +6 more sources

Heat of hydration of Portland cement containing coal-derived char at different temperatures

Results in Materials
The heat of hydration is fundamental in understanding the hydration mechanism of cementitious materials, and temperature can significantly affect the heat of hydration.
Hua Yu, Prayush Jonchhe, Chooikim Lau, Kam Ng   +3 more
doaj   +1 more source

Verification оf Non-Stationary Mathematical Model оf Concrete Hardening in Thermal Technological Installations

Наука и техника, 2019
Thermo-technical installations consuming significant amounts of thermal energy are used in order to intensify precast and reinforced concrete production processes under industrial conditions.
A. M. Niyakovskii, V. N. Romaniuk, A. N. Chichko, Yu. V. Yaczkevich   +3 more
doaj   +1 more source

Effect of Hydration Heat Inhibitor on Thermal Stress of Hydraulic Structures with Different Thicknesses

Advances in Civil Engineering, 2020
Concrete hydration heat inhibitor can inhibit the early hydration reaction of concrete and reduce the initial heat release of concrete. However, there is no in-depth research on the effect of hydration heat inhibitor on hydraulic structures with ...
Wenqiang Xu, Sheng Qiang, Zhengkai Hu, Bingyong Ding, Bingyong Yang   +4 more
doaj   +1 more source