Results 1 to 10 of about 18,482 (315)

Investigation of the Incompatibilities of Cement and Superplasticizers and Their Influence on the Rheological Behavior [PDF]

Materials, 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, Jansen, Daniel, Neubauer, Jürgen, Pott, Ursula, Stephan, Dietmar   +4 more
core   +5 more sources

Synthesis and Modification of Polycarboxylate Superplasticizers-A Review. [PDF]

Materials (Basel)
The molecular-scale structural changes in polycarboxylic superplasticizer (PCE) can influence dispersion and water retention. Polycarboxylate superplasticizer, synthesized using different methods, may alter dispersion and water-reducing effects. The synthesis of PCE involves creating a novel macromolecular monomer with a controllable molecular mass ...
Xia Y, Shi W, Xiang S, Yang X, Yuan M, Zhou H, Yu H, Zheng T, Zhang J, Jiang Z, Huang L.   +10 more
europepmc   +4 more sources

Investigations on Stability of Polycarboxylate Superplasticizers in Alkaline Activators for Geopolymer Binders. [PDF]

Materials (Basel), 2023
Calcined clays are interesting starting materials to be used as SCMs (supplementary cementitious materials) in cements or to be converted to geopolymers by activation with a high alkaline activator.
Partschefeld S, Tutal A, Halmanseder T, Schneider J, Osburg A.   +4 more
europepmc   +2 more sources

Air Entrainment in the Presence of Superplasticizers

ACI Journal Proceedings, 1983
Air-entrained and plain mortar specimens (cement-sand ratio = 1.3, water-cement ratio = 0.65) were prepared using a modified sulfonated polymer, a naphthalene-formaldehyde condensate, or a sulfonated melamine formaldehyde admixture at two levels of concentration.
G. G. Litvan
openaire   +5 more sources

The Influence of Polymer Superplasticizers on Properties of High-Strength Concrete Based on Low-Clinker Slag Portland Cement. [PDF]

Materials (Basel), 2023
The paper deals with the effectiveness of various types of polymers (naphthalene formaldehyde, polycarboxylate, and lignosulfonate) as superplasticizers of concrete mixtures based on low-clinker slag Portland cement.
Dvorkin L, Zhitkovsky V, Makarenko R, Ribakov Y.   +3 more
europepmc   +2 more sources

Effect of Functional Polycarboxylic Acid Superplasticizers on Mechanical and Rheological Properties of Cement Paste and Mortar

Applied Sciences, 2020
Modern engineering practices require that polycarboxylic acid high-performance superplasticizers have good adaptability to various environments and materials, which indicates the importance of producing functional polycarboxylic acid superplasticizers ...
Wuju Xun, Changlong Wu, Jiye Li, Chengwu Yang, Xuefei Leng, Desheng Xin, Yang Li   +6 more
doaj   +2 more sources

Effect of dose and types of the water reducing admixtures and superplasticizers on concrete strength and durability behaviour: a review

Journal of Civil Engineering and Management
As one of the concrete admixtures, water reducing admixtures and superplasticizers are usually used to reduce the mixing water volume and improve the performance of the harden concrete while maintaining better workability of the fresh concrete. However,
Xiao-Hui Wang, Zhi-Chao Fang, Li Zheng
doaj   +2 more sources

Structure-property relationships for polycarboxylate ether superplasticizers by means of RAFT polymerization

Journal of Colloid and Interface Science, 2019
Hypothesis: Polycarboxylate ether (PCE) comb-copolymers are widely used as water reducing agents in the concrete industry while maintaining a high fluidity via the polymer adsorption to the cement particles.
De Schutter, Geert, El Cheikh, Khadija, Hoogenboom, Richard, Lesage, Karel, Muhammad, Metwally, Xu, Xiaowen   +5 more
core   +2 more sources

A systematic study on sustainable low carbon cement – Superplasticizer interaction: Fresh, mechanical, microstructural and durability characteristics [PDF]

Heliyon, 2023
As governments around the world take on ambitious construction projects, from housing to infrastructure to transportation, the demand for cement is set to rise.
Ishan Bhandari, Rajesh Kumar, A. Sofi, Nikhil Sanjay Nighot   +3 more
doaj   +2 more sources

The effect of polycarboxylate superplasticizer on the strength and hydration performance of alkali slag building materials [PDF]

Designed Monomers and Polymers
To explore the effect of polycarboxylate superplasticizers on the strength and hydration performance of alkali slag building materials, this study prepared cross-linked polycarboxylate superplasticizers with different ratios of hydrogen peroxide, methyl ...
Guide Liu, Xin Zheng, Guoliang Xie, Gongliang Liu   +3 more
doaj   +2 more sources