Results 31 to 40 of about 913 (181)

Composite cements containing natural pozzolan and granulated blast furnace slag

Materiales de Construccion, 2006
For reasons of market demand and Portland cement production,the manufacture of cements with two or more separately ground additions to produce customized cements is becoming common practice.
V. L. Bonavetti, G. Menéndez, H. A. Donza, V. F. Rahhal, E. F. Irassar   +4 more
doaj   +1 more source

Optimising the Workability and Strength of Concrete Modified with Anacardium Occidentale Nutshell Ash

Fibers, 2021
Strength failure persists both in structural and mechanical analysis. One of its prominent characteristics is the adequate provision for parameters that minimise or maximise strength objectives while satisfying boundary conditions.
Solomon Oyebisi, Anthony Ede, Hilary Owamah, Tobit Igba, Oluwaseun Mark, Abimbola Odetoyan   +5 more
doaj   +1 more source

Performance of structurally viable green concrete derived from natural Pozzolan and Nanosilica

Magazine of Civil Engineering, 2021
The effect of admixing nanosilica on the fresh and hardened properties of natural pozzolan (NP) based alkali activated concrete (AAC) was examined. The workability, setting times, engineering properties, durability characteristics and pore structure of ...
Ibrahim Mohammed, Nasir Muhammad, Hussaini Syed Rizwanullah, Najamuddin Syed Khaja, Ewebajo Adeoluwa   +4 more
doaj   +1 more source

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

Biocompatibility With Osteogenic Potential of Premixed Bioceramic Cements for Use in Apical Surgery

Australian Endodontic Journal, EarlyView.
ABSTRACT This study investigated the biocompatibility and osteogenic potential of premixed bioceramic cements (PBCs)—CeraPutty, EndoCEM MTA Premixed, Well‐Root PT, and One‐Fil PT Injectable—as alternatives to mineral trioxide aggregate for retrograde filling in endodontic microsurgery.
Yesol Kim, Jae‐Hoon Kim, Unni Krishnan, Hyeon‐Cheol Kim, Minju Song, Sang Won Kwak   +5 more
wiley   +1 more source

Natural zeolite, a pozzolan for structural concrete

Procedia Structural Integrity, 2018
Abstract Of building materials, concrete is currently one of the most widely used on account of its low cost, appropriate mechanical features and its durability, as well as the ease with which it can adopt different shapes and sizes (Najimi et al., 2012).
Bárbara Belén Raggiotti, María Josefina Positieri, Ángel Oshiro   +2 more
openaire   +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

Characterization and Reactivity of Natural Pozzolans from Guatemala

Applied Sciences, 2022
The possibility of using pozzolanic materials as a partial substitute for Portland cement (PC) to develop mortars and concretes promotes environmental and economic benefits. The present paper includes an in-depth investigation into the characterization of natural pozzolans from Guatemala for the valorization of these materials.
Oscar M. Sierra, Jordi Payá, José Monzó, María V. Borrachero, Lourdes Soriano, Javier Quiñonez   +5 more
openaire   +3 more sources

Synergistic Effects of Silica and Calcium‐Based Dual Admixtures on the Flowability, Microstructure, and Strength Development in Low‐Carbon Concrete

Applied Research, Volume 5, Issue 4, August 2026.
ABSTRACT Eco‐friendly construction practices have emerged as a cornerstone of modern development. Due to the substantial carbon emissions from cement production, there is a growing demand for supplementary cementitious materials. This study investigated the synergistic effects of two different wastes, silica‐rich rice husk ash (RHA) and calcium‐rich ...
Md. Soybur Rahman, Zakaria Hossain
wiley   +1 more source

Mechanical Properties of a High Volume Natural Pozzolan Roller Compacted Concrete for Dams – Laboratory and Field Trials

Andalasian International Journal of Applied Science, Engineering, and Technology
This article reports the experimental findings of critical thermo-mechanical properties of RCC containing a high proportion of natural pozzolan as a supplementary cementitious material for Roller Compacted Concrete (RCC) dam construction, and was ...
Amos Karuge, Siphila Mumenya, Silvester Abuodha, Muthomi Munyua   +3 more
doaj   +1 more source