Results 81 to 90 of about 5,625 (250)

Influence of Cement Superplasticizer on Steel Corrosion in 3.5 % NaCl Solution

International Journal of Electrochemical Science, 2020
The corrosion of reinforcement steel present under different conditions namely bare steel (SI), steel in cement mortar (SII), and steel in cement mortar containing polycarboxylate superplasticizer (SIII) was investigated in 3.5 % sodium chloride solution
Reham H. Tammam, A.S. Mogoda, Mohamed H. Gharbawy   +2 more
doaj   +1 more source

Vacuum mixing technology to improve the mechanical properties of ultra-high performance concrete [PDF]

, 2015
Ultra-high performance concrete is an important evolution in concrete technology, enabled by the combination of a good particle packing density, a suitable mixing procedure and compatible binders and admixtures.
De Schutter, Geert, Dils, Jeroen
core   +2 more sources

Influence of Polymeric Dispersants on the Dissolution Rate of Tricalcium Silicate and the Nucleation of Calcium‐Silicate‐Hydrate and Portlandite

Chemistry – A European Journal, Volume 31, Issue 27, May 14, 2025.
Comb‐copolymers with anionic functional groups and poly(ethylene glycol) side chains are concrete dispersants. However, they retard the hydration of the main Portland cement phase Ca3SiO5${\rm Ca}_{3}{\rm S}{\rm iO}_{5}$. Herein, we report on their influence on the dissolution rate of Ca3SiO5${\rm Ca}_{3}{\rm S}{\rm iO}_{5}$ and their nucleation ...
Andreas Vohburger, Marie Collin, Olivia Rindle, Torben Gädt   +3 more
wiley   +1 more source

Early-age volume changes of extrudable reactive powder concrete

EPJ Web of Conferences, 2010
This article presents a study on the early-age autogenous deformations of Extrudable Reactive Powder Concretes (ERPCs), especially designed for the making of concrete pipes by extrusion.
De Noirfontaine M.N., Mounanga P., Khelidj A., Dunstetter F., Cherkaoui K., Courtial M.   +5 more
doaj   +1 more source

Study on the Influence of Acrylic-Acid Addition Mode on the Performance of Polycarboxylate Slump-Retaining Superplasticizers [PDF]

E3S Web of Conferences
The study employed ethylene glycol monovinyl ether (EPEG) as the primary monomer and utilized a redox initiation system comprising hydrogen peroxide, ferrous sulfate, ascorbic acid, and mercaptoethanol.
Yang Xianxian, Guo Xiujuan, Qiu Nianli, Xiong Qiumin, Chen Xiaobin   +4 more
doaj   +1 more source

A PCE-based rheology modifier allows machining of solid cast green bodies of alumina [PDF]

, 2015
The performance of a poly(carboxylate ether) (PCE)-based superplasticizer to enable the machining of green bodies that are solid cast from suspensions of alumina was investigated. An alumina loading of 35 vol% in the presence of 1.25 wt% superplasticizer
Akbulut, Ozge, Akbulut, Özge, Akhlaghi Baghoojari, Omid, Avci, Gokay, Avcı, Gökay, Menceloglu, Yusuf Z., Menceloğlu, Yusuf Z., Ozbay, Ceren, Ustbas, Burcin, Özbay, Ceren, Üstbaş, Burçin   +10 more
core   +1 more source

Flow loss in superplasticized limestone calcined clay cement

Journal of the American Ceramic Society, Volume 108, Issue 5, May 2025.
Abstract This study investigates the mechanisms behind fluidity loss in superplasticized limestone calcined clay cement (LC3), a sustainable alternative to ordinary Portland cement (OPC). Despite its environmental benefits, in presence of superplasticizers, LC3 experiences significant challenges in maintaining workability, an issue of which this paper ...
Sirajuddin Moghul, Franco Zunino, Robert J. Flatt   +2 more
wiley   +1 more source

Influence of Nanosilica on Mechanical Properties, Sorptivity, and Microstructure of Lightweight Concrete [PDF]

, 2019
This study presents the results of an experimental investigation of the effects of nanosilica (NS) on the strength development, transport properties, thermal conductivity, air-void, and pore characteristics of lightweight aggregate concrete (LWAC), with ...
Abd Elrahman, Mohamed, Chung, Sang-Yeop, Rucinska, Teresa, Sikora, Pawel, Stephan, Dietmar   +4 more
core   +1 more source

Polycarboxylate Superplasticizers Used in Concrete: A review

International Journal of Experimental Research and Review
Modern concrete frequently uses a variety of chemical admixtures, like setting time-retarding admixtures, viscosity-modifying admixtures (VMA), and superplasticizers (SPs). These chemical admixtures greatly impact cement components like film-forming capacity, flowability, and film drying time.
Ponduri Samatha Chowdary, Yellinedi Madhavi, Chagarlamudi Kavitha, Namepalli Venkata Sairam Kumar, Uppala Venkata Narayana Rao   +4 more
openaire   +1 more source

Effect of superabsorbent polymers, superplasticizer and additional water on the setting of cementitious materials [PDF]

, 2014
Superabsorbent polymers (SAPs) are particles which can take up a significant amount of fluid without dissolving and are already applied in cementitious materials.
De Belie, Nele, Snoeck, Didier
core   +1 more source