Investigation of the Incompatibilities of Cement and Superplasticizers and Their Influence on the Rheological Behavior [PDF]
, 2020 The rheological behavior of cement paste and the improvement of its flowability takes center stage in many research projects. An improved flowability can be achieved by the addition of superplasticizers (SP), such as polycarboxylate ethers (PCE).
Jakob, Cordula +4 more
core +2 more sources
Buildings, 2023 The temperature stress caused by the large temperature difference is the main factor causing harmful cracks in large-volume concrete. The introduction of admixtures is beneficial to reduce the temperature difference inside and outside the large-volume ...
Liguo Wang +8 more
doaj +1 more source
Effectiveness of short-term heat acclimation on intermittent exercise in thermoneutral and hot environments [PDF]
, 2015 It is well-established that repetition of heat stress exposure has been shown to facilitate adaptations to the heat but these protocols have tended to be of a fixed work intensity, continuous exercise, long-term in duration (>7 days) and use hydration ...
Abt, Grant +7 more
core +2 more sources
Hydration of Ternary Blends Containing Steel Slag and Limestone by Considering the Curing Temperature Effect [PDF]
Iranian Journal of Chemistry & Chemical EngineeringThe effect of the curing temperature on the hydration ternary blended cement based on limestone and processed steel slag was examined by measuring the degree of hydration, Apparent activation energy (Ea), and heat of hydration at three different curing ...
Mojtaba Hosseini +2 more
doaj +1 more source
Prediction of Hydration Heat of Mass Concrete Based on the SVR Model
IEEE Access, 2021 Thermal cracking in pile caps caused by concrete hydration heat will affect the safety and durability of long-span cable-stayed bridges. Therefore, effective prediction and control of concrete bridges hydration heat has been a challenging problem.
Dunwen Liu +3 more
doaj +1 more source
Kinetic Hydration Heat Modeling for High-Performance Concrete Containing Limestone Powder
Advances in Materials Science and Engineering, 2017 Limestone powder is increasingly used in producing high-performance concrete in the modern concrete industry. Limestone powder blended concrete has many advantages, such as increasing the early-age strength, reducing the setting time, improving the ...
Xiao-Yong Wang
doaj +1 more source
Lattice Modeling of Early-Age Behavior of Structural Concrete. [PDF]
, 2017 The susceptibility of structural concrete to early-age cracking depends on material composition, methods of processing, structural boundary conditions, and a variety of environmental factors.
Bolander, John E +4 more
core +3 more sources
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 +3 more
doaj +1 more source
A Finite Element‑Based Methodology for the Thermo‑mechanical Analysis of Early Age Behavior in Concrete Structures [PDF]
, 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
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