Results 121 to 130 of about 89,639 (290)
Hydration study of Belite-Alite Calcium Sulfoaluminate (BACSA) cement blended with fly ash [PDF]
, 2015 The main objective of this work is to understand the effect of the addition of fly ash (0, 15 and 30 wt%) in the hydration of a BACSA cement paste (water/cement=0.4) prepared with 12 wt% of anhydrite. The pastes were characterized, at different hydration
García-Aranda, Miguel Ángel +4 more
core
Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction
steel research international, EarlyView.Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo +8 more
wiley +1 more source
Materials Research ExpressComplex oil and gas wells often experience complex stresses underground during the extraction process, which can easily cause damage to the cement paste.
Hui Zhang, Chengwen Wang
doaj +1 more source
Monitoring of historical structural materials with computed tomography
Structural Concrete, EarlyView.Abstract Computed tomography (CT) is an excellent tool to solve certain engineering problems connected to material science (such as sulfate swelling, internal degradation due to freezing, and alkali silicate swelling) and to understand specific processes (frost peeling, acid action).
Kristóf Csorba +5 more
wiley +1 more source
Structural Concrete, EarlyView.Abstract Steam curing is commonly used to manufacture precast culverts to accelerate early strength development. This study investigates the effect of supplementary cementitious materials (SCMs) on the permeability properties of steam‐cured precast concrete culverts.
Saugat Humagain +3 more
wiley +1 more source
Self-desiccation and self-desiccation shrinkage of silica fume-cement pastes [PDF]
, 2017 Self-desiccation is one common phenomenon of high-performance cementitious materials, which are characterized by low water/binder (w/b) ratio and high mineral admixture incorporation. As a consequence, large magnitude of self-desiccation shrinkage, a key
De Schutter, Geert, Liu, Yang, Ye, Guang
core +1 more source
The Erosion of Constitutionalism via Constitutional Entrepreneurship: Lessons from Slovakia
The Political Quarterly, EarlyView.Abstract The 2023 Slovak general election resulted in an illiberal coalition keen to transform the political regime following its Hungarian neighbour's post‐2010 example. Using the Slovak case, this article shows the key role of political party leaders’ constitutional entrepreneurship in the erosion of constitutionalism. Constitutional entrepreneurship
Darina Malová, Max Steuer
wiley +1 more source
Journal of Materials Research and TechnologyOil well cement paste serves in high-temperature and high-pressure wellbore environments and bears multiple fracturing loads during deep shale-gas resource development.
Binhui Li +9 more
doaj +1 more source
Australian Endodontic Journal, EarlyView.ABSTRACT The aim of this study was to synthesize evidence on the influence of Enterococcus faecalis on endodontic treatment failure and strategies for its elimination. This study followed the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) guidelines and was registered in PROSPERO (CRD420251022741).
Francine Santos Fernandes de Lima +1 more
wiley +1 more source
Hypersensitivity to Excipients in Drugs: An EAACI Position Paper
Allergy, EarlyView.ABSTRACT Drugs contain active pharmaceutical ingredients and excipients, compounds which enhance the pharmacokinetics, stability and palatability of the pharmaceutical formulation. While most drug hypersensitivity reactions (DHR) are caused by active ingredients, excipients may also be involved.
Lene H. Garvey +10 more
wiley +1 more source