Results 51 to 60 of about 5,625 (250)
Characterization of the mesostructural organization of cement particles in fresh cement paste [PDF]
, 2016 Comparative study on the mesostructures of fresh cement paste (FCP) in different dispersion mediums was carried out aiming at characterizing the structural organization of cement particles in FCP at a mesoscopic scale and establishing the correlation of ...
Bai, Y, Gao, L, Kong, X, Zhang, Y
core +1 more source
Synthesis and Modification of Polycarboxylate Superplasticizers—A Review
MaterialsThe 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 ...
Yuchen Xia +10 more
openaire +2 more sources
Metasurface Enhanced Photothermal Cement Foam for Robust and High‐Throughput Seawater Desalination
Carbon Energy, EarlyView.Schematic of 3D metasurface‐enhanced cement foam for robust and high‐throughput seawater desalination. This study presents a cement‐based solar evaporator (CSE) fabricated in one step via viscoelastic lithography with simple negative pressure. In addition to boosting solar‐to‐vapor conversion efficiency via excellent light‐harvesting capacity, the ...
Jianjun Guo +4 more
wiley +1 more source
Towards tailored superplasticizers [PDF]
, 2005 Superplasticizers (SP) of the “new generation” are essentially polycarboxylate polymers. Polymers of this family can be produced with almost infinite variations in their chemical structure, which allow the fulfilment of specific (tailored) properties ...
Bowen, P., Houst, Y.F., Perche, F.
core
Extrudable Reactive Powder Concretes Hydration, shrinkage and transfer properties [PDF]
, 2012 International audienceThe behavior of five reactive powder concretes (RPC), with four of them being extrudable, has been studied since the first minutes up to more than 90 days. The extrusion force, hydration rate, free autogenous shrinkage at early age,
Cherkaoui, Khalid +5 more
core +4 more sources
Enhancing printability of 3D printed concrete by using metakaolin and silica fume
Structural Concrete, EarlyView.Abstract This study investigates the effects of incorporating metakaolin (MK) and silica fume (SF) on the fresh and hardened properties of 3D printed concrete (3DPC). Five mix designs were prepared with MK replacement levels of 0%, 10%, 12.5%, and 15%, along with one mix containing 10% MK and 5% SF.
Marwah M. Thajeel +2 more
wiley +1 more source
MATEC Web of Conferences, 2018 The use of certain organic additives in the production of mortar and concrete influences the workability and the hydration kinetic of mortar. This results in a modification of some properties, namely rheological behavior and mechanical strength.
Zahia Didouche, Karim Ezziane
doaj +2 more sources
Structural Concrete, EarlyView.Abstract Cellulose nanocrystals (CNCs), increasingly utilized in cement‐bound materials, offer improved material properties and enhanced sustainability due to their bio‐based origin. Nanosilica (NS), known for its high reactivity and refinement of cement microstructure, also significantly impacts cement performance.
Ali Satar Jaber Al‐Askary +2 more
wiley +1 more source
Effect of superplasticizer on the strength of fly ash based geopolymer concrete
Acta Polytechnica CTU Proceedings, 2022 In this research, the effect of a polycarboxylate based superplasticizer on the strength of Geopolymer Concrete (GPC) was investigated. A fixed amount of superplasticizer (1.5 % of Fly Ash weight) was utilized along with alkali activators Sodium ...
Rhem Leoric Cantos Dela Cruz +4 more
doaj +1 more source
Structural Concrete, EarlyView.Abstract Fiber addition is a common strategy to enhance concrete's durability, avoiding cracks and reducing penetration of harmful agents. In this research, a sustainable fiber‐like material obtained from mechanical recycling of dismantled wind‐turbine blades and made up of glass fiber‐reinforced polymer (GFRP) fibers and microfibers, balsa wood, and ...
Javier Manso‐Morato +4 more
wiley +1 more source