Results 21 to 30 of about 1,621,211 (304)

The effects of supplementary cementing materials in modifying the heat of hydration of concrete [PDF]

, 2008
Supplementary cementing materials, such as ground granulated blastfurnace slag(GGBS), fly ash (FA) and condensed silica fume (CSF), are now routinely used in structural concrete.
Peter C. Graham, Ballim, Yunus, Graham, Peter C., Yunus Ballim   +3 more
core   +1 more source

Study on Hydration Heat Coefficient of Mass Concrete Construction

Chemical Engineering Transactions, 2018
This paper aims to prevent and control the hydration heat crack by analyzing the hydration heat coefficient in a bridge construction project, in which process it explores the reasons and concrete parameters as well as takes corresponding control measures.
Hongli Wang
doaj   +1 more source

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells [PDF]

E3S Web of Conferences, 2021
The article is devoted to an actual issue: the development of internal downhole heat exchangers technology to combat hydration in injection wells. Purpose: development of conceptual solutions for the use of geothermal coolant in the internal well heat ...
Fyk Мykhailo, Biletskyi Volodymyr, Аbbood Madjid, Аnzian Fabris   +3 more
doaj   +1 more source

Long-term Exothermic Characteristics and Hydration Mechanism of Low-heat Portland Cement Mixed with Fly Ash Based on Thermodynamic Calculation [PDF]

长江科学院院报
[Objective] This study aims to reveal the exothermic properties and hydration mechanism of low-heat Portland cement (LHC) (hereafter referred to as low-heat cement) mixed with fly ash, the composition of pore solution during hydration, and the evolution ...
CUI Jin-yang, LI Shu-guang, LI Wen-wei, YANG Hua-mei, ZHANG Duo, ZHANG Kai-lai
doaj   +1 more source

Hydration kinetics analysis of cementitious paste composites produced by binary and ternary binder materials for potential use in massive concrete structures

Case Studies in Construction Materials, 2023
In order to explore the applicability of different cementitious paste systems used for massive concrete structures, the hydration characteristics and mechanism of the binary and ternary cementitious paste systems in Portland cement pastes containing fly ...
Xingwang Sheng, Shimiao Xiao, Weiqi Zheng, Ying Yang, Kunlin Ma   +4 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

Thermoregulation in hot-dry and warm-humid heat stress during cycling among males

Frontiers in Physiology
IntroductionHot-dry (HD) and warm-humid (WH) environments with equivalent wet-bulb globe temperature (WBGT) may be expected to produce similar physiological strain; however, previous studies have reported divergent thermoregulatory and cardiovascular ...
Xiujing Zhao, Xiujing Zhao, Xiujing Zhao, Brendon P. McDermott, Brendon P. McDermott, Brendon P. McDermott, Cory L. Butts   +6 more
doaj   +1 more source

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

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