Results 101 to 110 of about 3,724 (225)

Self-Compacting Mixtures of Fair-Faced Concrete Based on GGBFS and a Multicomponent Chemical Admixture—Technological and Rheological Properties

Buildings
The use of superplasticizers in a self-compacting concrete mix without the addition of a foaming agent in practice leads to a well-known problem associated with increased air entrainment and promotes the formation of harmful large bubbles, high-void ...
Oksana A. Larsen, Svetlana V. Samchenko, Olga V. Zemskova, Andrey V. Korshunov, Artyom A. Solodov   +4 more
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Effects of Molecular Structure of Polycarboxylate Water Reducers on their Performance in Cement Paste

, 2010
The polycarboxylate water reducers(PCs) with different molecular structure were synthesized. The effects of molecular structure on their performance in cement paste were investigated.
Qi Jun Yu, Ya Jun Ji, Jiang Xiong Wei, Shun Li   +3 more
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Investigation of the clay sensitivity and cement hydration process of modified HPEG-type polycarboxylate superplasticizers

, 2018
In this work, three kinds of HPEG-type polycarboxylate superplasticizers (PCs) were synthesized with three kinds of typical functional monomers: [diallyl dimethyl ammonium chloride (DMDAAC), 2-hydroxyethyl methacrylate (HEMA), and 2-(dimethylamino) ethyl
Hongwei Zhao, Liao, Bing, Guo, Ying, Zhao, Hongwei, Hao Pang, Pang, Hao, Nian, Fuwei, Bing Liao, Fuwei Nian, Kun Wang, Ying Guo, Wang, Kun   +11 more
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Tailoring polycarboxylate architecture to improve the rheological properties of cement paste

, 2019
This study elucidates the link between polycarboxylate (PC) architecture (random vs. block) and rheological properties of cement pastes at a low water-cement ratio (W/C = 0.22) through a systematic investigation on the rheological properties, adsorption ...
Qianping Ran (2426098), Yanwei Wang (404550), Yong Yang (63842), Xin Shu (1272834), Xiumei Wang (24062), Jiaping Liu (2556433)   +5 more
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Interaction of polycarboxylate-based superplasticiser with clay in Portland cement systems

, 2018
It is widely accepted that polycarboxylate-based superplasticisers (PCEs) are sensitive to the presence of clay in cement and concrete. The impact of clay content on the adsorption behaviour of PCE on cement grain surfaces was investigated, with the ...
Jun Li, Guibo Gao, Yu Liu, Jun Ren, Jingyu Guo   +4 more
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Effect of Layered Double Hydroxides Ca-Al LDHs and Polycarboxylate Ethers on the Hardening of Portland Limestone Cement

, 2022
The use of layered double hydroxides (LDHs) is a new direction in chemistry of cement. The influence of calcium/aluminum double hydroxides (Ca-Al LDHs) and polycarboxylate ethers (PCE) on the strength development of Portland limestone cement has been ...
Vakhula, O. (Orest), Sanytsky, M. (Myroslav), Kaminskyy, А. (Аndrіy), Kropyvnytska, T. (Tetiana)   +3 more
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Characterization of polycarboxylate-ether based superplasticizer on cement clinker surfaces

, 2012
The application of Ordinary Portland Cement (OPC) based binder is commonly improved by the addition of rheology modifying agents, i.e. superplasticizers.
Winnefeld F., Bernard L., Ferrari L., Plank J., Deschner F., Kaufmann J.   +5 more
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Influence of Various Clay Particles on Effectiveness of Polycarboxylate Superplasticizer and Properties of Cement Stone

, 2019
Хицков Андрей Андреевич, выпускник-магистр кафедры «Строительные материалы и изделия», Южно-Уральский государственный университет (Челябинск), andwon74@gmail.com Иванов Илья Михайлович, аспирант кафедры «Строительные материалы и изделия», ЮжноУральский ...
Кирсанова, А.А., Zimich, V.V., Ivanov, I.M., Hickov, A.A., Зимич, В.В., Хицков, А.А., Иванов, И.М., Kirsanova, A.A., Kramar, L.Ya., Крамар, Л.Я.   +9 more
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Effect of structural modification of polycarboxylate-based grinding aids on hydration kinetics and rheological properties of cementitious systems

Studies have examined the effects of polycarboxylate ether-based admixtures (PCEs) on clinker grinding, cement properties, and overall system performance; however, the influence of variations in chain structure and charge distribution on cement ...
Kobya, Veysel, Ramyar, Kambiz, Kaya, Yahya, Mardani, Ali   +3 more
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Effect of polycarboxylate superplasticizer on contribution of interfacial transition zone to electrical conductivity of Portland cement mortars

, 2000
The effect of a polycarboxylate high-range water-reducing admixture on the electrical conductivity and interfacial transition zone (ITZ) characteristics of portland cement mortars was evaluated using AC impedance spectroscopy, mercury intrusion ...
Xu, G., Beaudoin, J. J.
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