Results 31 to 40 of about 875 (170)

Evolution of the hydration in cements with additions

Materiales de Construccion, 2002
In this paper, the hydration mechanism of portland cement pastes with limestone, quartz and natural pozzolan (80/20 weight) was analized. The techniques used were nonevaporable water content, pozzolanic activity and X-ray diffraction.
V. L. Bonavetti, V. F. Rahhal, E. F. Irassar   +2 more
doaj   +1 more source

Sustainability evaluation and life cycle assessment of concretes including pozzolanic by-products and alkali-activated binders

Results in Engineering
The construction industry's top priorities for achieving a sustainable future include minimizing the use of non-renewable resources, managing waste generation, and reducing related gas emissions.
Ayah A. Alkhawaldeh, Hassan I. Judah, Dima Z. Shammout, Oubaida A. Almomani, Mohammad A. Alkhawaldeh   +4 more
doaj   +1 more source

Sulfate resistance of ordinary Portland cement with fly ash

Materiales de Construccion, 1989
Low calcium fly ash has demonstrated to be an effective pozzolan to improve sulfate resistance of ordinary portland cement (type I). In this paper physico-chemical effects that produce this pozzolan in the mortar exposed to sulfate attack are studied ...
Edgardo F. Irassar, Oscar R. Batic
doaj   +1 more source

THE EFFECT OF THE POZZOLANIC ACTIVITY OF DIFFERENT MICRO-FILLERS ON PORTLAND CEMENT HYDRATION

Ceramics - Silikaty, 2020
This study estimates the influence of the different pozzolanic activity micro-fillers on the hydration of Portland cement. Cements with binary blends of ordinary Portland cement and different micro-fillers (15% by mass) were developed and their characteristics were investigated in terms of the fineness, chemical composition, mineral composition ...
Kaminskas, Rimvydas, Barauskas, Irmantas, Kubiliute, Raimonda, Monstvilaite, Deimante   +3 more
openaire   +2 more sources

Effect of Durability and Chloride Ion Permeability in Ternary Cementitious Concrete with Additions of Fly Ash and Blast Furnace Slag

International Journal of Electrochemical Science, 2016
Ternary mixtures of concrete with Portland, fly ash and finely ground granulated slag were produced to investigate their effects on the compressive strength and corrosion resistance.
W. Aperador, A. Delgado, J. Bautista-Ruiz   +2 more
doaj   +1 more source

Inverse Vulcanized Sulfur Polymer Composites From Poultry‐Industry Products and Lignocellulosic Biomass Waste

Journal of Applied Polymer Science, EarlyView.
This work explores the use of various fillers, including eggshell powder, feather meal, peanut hulls, and sawdust to reinforce a base binder GFS90 (comprised of 90 wt.% sulfur, 5 wt.% chicken fat, and 5 wt.% sunflower oil). The resulting composites showed impressive compressive strengths ranging from 15.3 to 36.2 MPa, making them a potential ...
Bárbara G. S. Guinati, Katelyn A. Tisdale, Rashmi N. Jayasinghe, Nicholas B. Ames, Ashlyn D. Smith, Rhett C. Smith   +5 more
wiley   +1 more source

The Role of Awareness in Sustainable Construction Materials Uptake in Developing Economies: Evidence From Nigeria

Sustainable Development, EarlyView.
ABSTRACT Sustainable Construction Materials (SCM) are crucial for reducing lifecycle emissions in the built environment, yet their adoption remains limited in many developing economies, such as Nigeria. This study investigates how awareness influences the adoption of SCM among professionals in Nigeria's Architecture, Engineering, and Construction (AEC)
Mumini Damilola Osuolale, Tajudeen Ajisomo, Juliana Felkner   +2 more
wiley   +1 more source

Microstructure and mechanical properties of microwave-assisted heating of pozzolan-Portland cement paste at a very early stage [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2013
Portland-pozzolan cement pastes at a very early stage subjecting to microwave heating were investigated. Microwave with a 2.45 GHz and multimode cavity was used for the experiments.
Natt Makul, Dinesh Kumar Agrawa
doaj  

Calorimetric and Thermal Analysis Studies on the Influence of Coal on Cement Paste Hydration [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2020
Composite Portland Cement, CEMII (cement with additives of limestone, slag from blast furnaces, tuff, and pozzolan) represent a significant share of the cement manufacturing in the world.
Noureddine. Bentaieb, Zine el Abidine Benarima, Salah Belaadi   +2 more
doaj   +1 more source

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source