Results 91 to 100 of about 2,326 (201)
Effect of nanofibrillar cellulose on the cement paste setting kinetics [PDF]
Нанотехнологии в строительствеIntroduction. The study addresses the effect of nanofibrillar cellulose (NFC) on the setting process of cement paste during the first hours of gauging. A brief justification of the research topic relevance is given.
Yury V. Pukharenko +2 more
doaj +1 more source
Fracture of the Passive Film on Reinforcing Steel in Concrete Under Mechanical Loading
Materials and Corrosion, EarlyView.Bending load induces a flexural crack in reinforced concrete specimen. Above the critical load inducing crack, a macro cell corrosion current is recorded by steel coupons embedded in the concrete. The macro cell current corresponds to the rupture of the passive film. ABSTRACT This study investigates the fracture of the passive film on reinforcing steel
Lucas Hess +3 more
wiley +1 more source
Thermal Coefficients of Paste-Paste Type Pulp Capping Cements
Dental Materials Journal, 1992 Thermal coefficients of four kinds of commercially available paste-paste type pulp capping cements were examined. Control reference samples were made of dentin. A thermal coefficient analyzer was used, heating specimens for a few nanoseconds by a xenon flash bulb and measuring thermal changes by using a thermocouple.
FUKASE, Yasumasa +4 more
openaire +3 more sources
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Lightweight aggregate concrete (LWAC) offers clear advantages for sustainable construction, including reduced density and improved thermal insulation. However, its mechanical and fracture behavior is difficult to characterize due to the heterogeneity and brittle crushing of porous lightweight aggregates.
Yuhui Lyu +7 more
wiley +1 more source
Starch Biocomposite Reinforced With Chemically Modified Hibiscus esculentus Biofibers
Polymer Composites, EarlyView.Starch biocomposite production route. ABSTRACT The global proliferation of non‐biodegradable plastics in landfills and marine ecosystem represents a critical environmental crisis. To mitigate this, present study explores the development of sustainable, starch based bio composites.
Ashish Guleria +6 more
wiley +1 more source
A Hero's Journey to Systemic Change: Developing Expertise in Agricultural Development
Sustainable Development, EarlyView.ABSTRACT Experts in rural development and agrarian change wield considerable influence over programme design and delivery, directing resources and shaping trajectories towards the Sustainable Development Goals (SDGs). Yet the pathways through which such expertise develops remain under‐examined. This study examines the journey to expertise among experts
Kirt Hainzer +7 more
wiley +1 more source
Acta Polytechnica CTU Proceedings, 2017 Recycled concrete powder (RCP) mostly consisting of cement paste could be reused as partial cement replacement. The aim of this paper is to compare hydration and mechanical properties of RCP and two types of silica sand powder (SSP).
Jaroslav Topič, Zdeněk Prošek
doaj +1 more source
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
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