Results 21 to 30 of about 148,266 (259)

A Finite Element‑Based Methodology for the Thermo‑mechanical Analysis of Early Age Behavior in Concrete Structures [PDF]

open access: yes, 2019
This paper presents a general procedure based on fracture mechanics models in order to analyze the level of cracking and structural safety in reinforced concrete elements at early ages, depending on the stripping time.
Cabezas, Joaquín   +4 more
core   +3 more sources

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

open access: yes, 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   +9 more
core   +2 more sources

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

open access: yes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

open access: yesCase 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   +4 more
doaj   +1 more source

Multiscale understanding of tricalcium silicate hydration reactions [PDF]

open access: yes, 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   +8 more
core   +4 more sources

Stabilization of Cr(III) wastes by C3S and C3S hydrated matrix : comparison of two incorporation methods [PDF]

open access: yes, 2015
In the present study, the influence of Cr(III) on the properties of C3S and its stabilization in C3S hydrates was investigated by either direct incorporation as Cr2O3 during C3S preparation or introduced as nitrate salt during hydration.
De Schutter, Geert   +3 more
core   +1 more source

Treatment of end-of-life concrete in an innovative heating-air classification system for circular cement-based products [PDF]

open access: yes, 2020
A stronger commitment towards Green Building and circular economy, in response to environmental concerns and economic trends, is evident in modern industrial cement and concrete production processes.
Di Maio, F.   +4 more
core   +2 more sources

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

open access: yesCrystals, 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   +3 more
doaj   +1 more source

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

open access: yesИзвестия 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   +3 more
doaj   +1 more source

Heat Capacity Effects Associated with the Hydrophobic Hydration and Interaction of Simple Solutes: A Detailed Structural and Energetical Analysis Based on MD Simulations

open access: yes, 2004
We examine the SPCE and TIP5P water models to study heat capacity effects associated with the hydrophobic hydration and interaction of Xenon particles. We calculate the excess chemical potential for Xenon employing the Widom particle insertion technique.
Dietmar Paschek, Lee B., Lindahl E.
core   +1 more source

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