Results 41 to 50 of about 21,203 (255)
Air‐entrainment problem in self‐compacting concrete
Journal of Civil Engineering and Management, 2009 According to the actual state of knowledge and in accordance with the PN‐EN 2006–1 norm, it is recommended to use air‐entrainment as a basic way of assuring frost‐resistance of concrete.
Janusz Szwabowski +1 more
doaj +1 more source
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
Rheological and hydration characterization of calcium sulfoaluminate cement pastes [PDF]
, 2015 Calcium sulfoaluminate (CSA) cements are currently receiving a lot of attention because their manufacture produces less CO2 than ordinary Portland cement (OPC).
García-Aranda, Miguel Ángel +4 more
core +1 more source
Engineering Structures and Technologies, 2014 The article aims to research the influence of the chemical admixtures on the rheological properties of Portland cement paste and determine their impact on the effectiveness of hydration induction period. Materials used in the study: Portland cement CEM I
Mindaugas Macijauskas, Albinas Gailius
doaj +1 more source
Estimation of concrete compressive strength using artificial neural network [PDF]
Građevinski Materijali i Konstrukcije, 2015 In present paper, concrete compressive strength is evaluated using back propagation feed-forward artificial neural network. Training of neural network is performed using Levenberg-Marquardt learning algorithm for four architectures of artificial neural ...
Kostić Srđan, Vasović Dejan
doaj +1 more source
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
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
The fine high-calcium fly ash as the basis of composite cementing material [PDF]
Инженерно-строительный журнал, 2019 The high-calcium fly ashes (HCFA) of Krasnoyarsk TPP-2, Russia were studied. The HCFA were selected from each of the 4 fields of the electrostatic precipitator.
O.M. Sharonova +3 more
doaj +1 more source
Heat release and thermal conductivity of expanded-clay concrete for 3D printer
Magazine of Civil Engineering, 2021 The subject of research is expanded-clay concrete with additives of ground granulated blast-furnace slag, silica fume, superplasticizer admixture and air-entraining admixture for 3D printing.
Kseniia Usanova +4 more
doaj +1 more source
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