Results 51 to 60 of about 364,055 (260)

The Effect of Red Mud on Sintering Processes and Minerals of Portland Cement for Roads

Crystals, 2021
As a solid waste generated in the alumina industry, red mud poses a significant environmental hazard and a storage problem. In this study, red mud was added to road cement clinker in order to utilize it.
Xiao Wang, Ke Sun, Xin Li, Juntao Ma, Zhongtao Luo   +4 more
doaj   +1 more source

Hydration Behavior of Tricalcium Silicate in Seawater Relevant Salt Systems: A Hybrid Study with the Aid of Machine Learning

Advanced Intelligent Discovery, EarlyView.
The hydration behavior of C3S in seawater‐relevant solutions is studied based on experiments, boundary nucleation and growth (BNG) modeling, and machine learning. The main ions included in seawater modify hydration mechanisms, with MgCl2 showing the strongest acceleration effect at the same concentration.
Yanjie Sun, Chen Zhang, Ting Zhang, Mengze Hong, Peiliang Shen, Chi Sun Poon, Gang Li   +6 more
wiley   +1 more source

Mechanical Agitation Effects on Physical Properties of Calcium-Silicate-Cement Sealers [PDF]

Endodontic sealers are crucial to achieving a fluid-tight seal within the intricacies of root canal systems. While these sealers have been available in hand-mixed or syringe-mixed formulations, there is now a surge in pre-mixed Calcium-Silicate-Cement ...
Aki Take (22482001)
core   +1 more source

Hydrostatic compression and pressure phase transition of major Portland cement constituents – Insights via molecular dynamics modeling

Cement, 2022
The complex composite material cement paste (CP) is under high pressures in underwater applications and when impact loading occurs. The mechanical behavior of cement paste to hydrostatic compression results from mechanical deformations of each phase ...
Ingrid M. Padilla Espinosa, Nirmalay Barua, Ram V. Mohan   +2 more
doaj   +1 more source

Redescription of †Eobrasilia coutoi (Metatheria: Polydolopimorphia), a unique sclerocarpophagous metatherian from the Palaeogene of South America: Systematic affinities, and paleoecological and evolutionary implications

The Anatomical Record, EarlyView.
Abstract The ‘Palaeogene strata’ of the Itaboraí Basin (upper Paleocene‐lower Eocene), Southeastern Brazil, has preserved 29 genera and almost 50 species of metatherians (about 65% of its mammalian diversity). Among them, Eobrasilia coutoi Simpson, 1947 is the most enigmatic due to its quite fragmentary nature.
Leonardo M. Carneiro, Hugo Bampi, Ana C. Bernardes‐Dias, Lidiane Asevedo, João P. P. Araújo, Matheus R. Arêas, Alessandra S. Machado, Ricardo T. Lopes, Rafael C. Silva, Marina B. Soares, Gustavo R. Oliveira   +10 more
wiley   +1 more source

Feasibility of Design One-Part Sodium Silicate Activated Metamontmorillonite-Limestone Cements [PDF]

Iranian Journal of Materials Science and Engineering, 2023
In this study, the potential of calcined montmorillonite as a primary precursor for one-part alkali-activated cement incorporated with high percentage of limestone, is evaluated.
Nailia Rakhimova, Vladimir Morozov, Aleksey Eskin, Bulat Galiullin   +3 more
doaj  

Interaction Mechanism of Cementitious Composites Containing Different Twisted PVA Fiber Bundles

Buildings, 2023
Fiber-reinforced cementitious composites (FRCCs) have made significant progress in improving the tensile and flexural properties of concrete members. Studies have shown that polyvinyl alcohol (PVA) fibers can effectively enhance the toughness of FRCCs ...
Hongmei Zhang, Fan Hu, Yuanfeng Duan, Jiaqi Yang, Zhengteng Duan, Lening Cao   +5 more
doaj   +1 more source

Neurovascular coupling in bone regeneration: Mechanisms, advanced biomaterials and challenges

BMEMat, EarlyView.
This figure illustrates various material strategies for neurovascularized bone regeneration, including electroactive scaffolds, ion‐loaded materials, drug delivery systems, surface modifications, cells/cell products, growth factors, and peptides. These approaches aim to synergistically promote the regeneration of neural, vascular, and bone tissues ...
Yixin Ma, Nan Jiang, Liyuan Chen, He Zhang, Xinjia Cai, Karan Gulati, Danqing He, Zhigang Cai, Yan Liu   +8 more
wiley   +1 more source

Bentonite hydration effects on the engineering properties of a cement - sodium silicate slurry

Case Studies in Construction Materials
Because of the advantages of good fluidity, short gelation time and high compressive strength, cement - sodium silicate slurry is widely used in shield engineering.
Shengwei Wang, Yangjian Li, Bangbang Lu
doaj   +1 more source

Characteristics and propierties of oil-well cements additioned with blast furnace slag

Materiales de Construccion, 2011
The present paper addresses the alkali activation of Portland cements containing blast furnace slag (20 and 30% of the cement by weight) with a view to the possible use of these materials in oil well construction.
R. Sánchez, M. Palacios, F. Puertas
doaj   +1 more source