Results 111 to 120 of about 56,681 (268)

Thixotropic Behavior of Cement Pastes Under Large Amplitude Oscillatory Shear

open access: yesApplied Rheology, 2017
Cement-based materials exhibit highly complex rheological properties, in particular yielding and thixotropy. These two properties can be characterized by considering rebuilding under a constant stress (creep) after shear at high rate.
Conte T., Bennacer R., Chaouche M.
doaj   +1 more source

Enhanced self-healing capacity in cementitious materials by use of encapsulated carbonate precipitating bacteria : from proof-of-concept to reality [PDF]

open access: yes, 2013
In this study, two bacteria-based self-healing systems were developed for the proof-of-concept and approach to a realistic self-healing. A self-healing system with glass capillaries and silica sol gel carried bacterial cells was first built.
De Belie, Nele   +2 more
core  

Formaldehyde Emissions From 2‐Octyl Cyanoacrylate: Quantified Risk for Allergic Contact Dermatitis

open access: yesContact Dermatitis, EarlyView.
This study found that 2‐octyl cyanoacrylate skin adhesives release formaldehyde at levels up to 8.4× above EPA dermal thresholds and up to 2.41× above NIOSH airborne limits, producing exposures sufficient to provoke allergic and irritant contact dermatitis in patients.
Daniel S. Rouhani   +6 more
wiley   +1 more source

Thermodynamic optimization of Portland cement clinkers for designing SCM-blended cements

open access: yesDevelopments in the Built Environment
The composition of Portland cement clinker is crucial for determining the hydration and phase assemblages of blended cement systems incorporating supplementary cementitious materials (SCMs).
Chun Sik Kim   +6 more
doaj   +1 more source

Topics in Cement and Concrete Research [PDF]

open access: yes, 2006
In recent decades, the construction sector has faced many changes. One of these changes is the shift in the role of national government from one-sided practices in which the government was solely responsible for strategic and long-term spatial planning ...
Brouwers, H.J.H.
core   +3 more sources

Strategic materials and state capacity in Renaissance Italy. The economic policies of ‘Roman saltpetre’ procurement

open access: yesThe Economic History Review, EarlyView.
Abstract Demonstrating the existence of a soaring demand for strategic materials in fifteenth‐century Rome, the article pioneers research in the late medieval trade in saltpetre, the irreplaceable, rare component of gunpowder, indispensable for waging war following the diffusion of artillery technology.
Fabrizio Antonio Ansani
wiley   +1 more source

Durability performance of Green Concrete Incorporating Various Wastes: A Review [PDF]

open access: yes, 2019
The present manuscript stands for the review on the topic of durability attribute of concretes developed by means of green conception with incorporation of a variety of solid industrial waste slag from Ground Granulated Blast Furnace, silica fume, rice ...
LUHAR, Ismail, LUHAR, Salmabanu
core  

Extreme weather and economic crisis in the 1430s in England, and the implications for tenurial change

open access: yesThe Economic History Review, EarlyView.
Abstract The 1430s were characterized by extreme weather conditions, food and fodder shortages, and high mortalities among animals and humans, although the severity of events and their consequences in England have received limited attention. The economic downturn and the depressed customary land market in this decade marked the beginning of the Great ...
Mark Bailey
wiley   +1 more source

Carbon sequestration and environmental impacts in ternary blended cements using dyeing sludge and papermaking sludge

open access: yesJournal of Infrastructure Preservation and Resilience
Highlights Eco-friendly ternary blended cement with dyeing sludge ash (DS) and papermaking sludge (PS) was developed. Replacing OPC with 5 wt% of DS and PS improves the mechanical properties of blended cement.
Dongyang Tian   +6 more
doaj   +1 more source

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