Results 21 to 30 of about 18,984 (163)

CONSISTENCY OF FLY ASH AND METAKAOLIN CONCRETE

open access: yesJOURNAL OF CIVIL ENGINEERING AND MANAGEMENT, 2009
As high‐performance Portland cement (PC), fly ash (FA) and metakaolin (MK) concrete have been developed in wide applications, it has growing interest in optimizing and predicting consistency of fresh PC‐FA‐MK concrete for efficient and practical design and construction.
Bai, Jiping, Gailius, Albinas
openaire   +4 more sources

The Material Basis of 18th‐Century Meissen Porcelain

open access: yesArchaeometry, EarlyView.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

Circular Alkali‐Activated Cements Based on EAF Slags and Biomass Bottom Ash Using Rice Husk Ash–Derived Sodium Silicate

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT This study investigates sodium silicate (SS) solutions derived from rice husk ash (RHA) dissolved in 8 M NaOH as sustainable activators for alkali‐activated cements (AACs), compared with commercial SS. AACs were produced using a 50:50 blend of electric arc furnace slag (EAFS) and biomass bottom ash (BA). The effects of NaOH/RHA ratio (6.6–2.8)
A. Muñoz‐Castillo   +2 more
wiley   +1 more source

In-situ early age hydration of cement-based materials by synchrotron X-ray powder diffraction [PDF]

open access: yes, 2015
Cement based binders are building materials of worldwide importance. Since these samples are very complex, the knowledge/control of their mineralogical composition are essential to design and predict materials with specific/improved performance. Rietveld
Chou, K. W.   +8 more
core  

Phase Transformations, Microstructural Effects, and Photocatalytic Activity of Tungsten Trioxide‐Geopolymer Composites

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
 . ABSTRACT Water and air pollution are pervasive issues, impacting the majority of global citizens. In response, geopolymers functionalized with photocatalytic metal oxides have emerged as sustainable materials for environmental remediation. This study examines how the Si/Al molar ratio (1 and 2) and photocatalytic WO3 loading (WO3/Al molar ratios of ...
Jamie Wilson   +3 more
wiley   +1 more source

Menentusahkan faktor tekanan kerja guru sekolah menengah Gred A Daerah Batu Pahat [PDF]

open access: yes, 2013
Kajian ini dilaksanakan untuk mengenal pasti faktor-faktor yang mempengaruhi tekanan kerja guru yang mengajar di kawasan bandar dan sekolah tersebut dikategorikan sebagai sekolah gred A.
Halim, Nurul Shafinaz
core  

Reactivity Evolution of Mechanochemically Activated Laterite Used as a Supplementary Cementitious Material

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 3, March 2026.
ABSTRACT The use of laterite soil with high Al and Fe content has been investigated as a novel supplementary cementitious material (SCM) to replace traditional mineral materials for clinker substitution. High‐energy ball milling was used to mechanochemically activate laterite and change its reactivity.
Jean Noel Yankwa Djobo   +2 more
wiley   +1 more source

TEM and SAED Characterization of Metakaolin. Pozzolanic Activity [PDF]

open access: yes, 2012
The present study deals with a characterization of metakaolin pozzolanic activity and its chemical character exhibited in the Ordinary Portland Cement (OPC) blends by means of Transmission Electron Microscopy (TEM) and Selected-Area Electron Diffraction (
Fernandez Martinez, F.   +3 more
core   +2 more sources

Development and Characterization of 3d‐Printed Chitosan‐Copper Catalytic Supports for the Conversion of Biomass‐Derived Products

open access: yesMacromolecular Materials and Engineering, Volume 311, Issue 2, February 2026.
This study reports the fabrication of bio‐based 3D‐printed chitosan‐copper catalysts via masked stereolithography (MSLA). The resulting materials exhibit uniform metal distribution, good structural and thermal stability, and catalytic activity in the oxidation of biomass‐derived benzyl alcohol to benzaldehyde, demonstrating a sustainable and efficient ...
Erika Blânzeanu   +9 more
wiley   +1 more source

Enhancing printability of 3D printed concrete by using metakaolin and silica fume

open access: yesStructural Concrete, Volume 27, Issue 1, Page 1068-1084, February 2026.
Abstract This study investigates the effects of incorporating metakaolin (MK) and silica fume (SF) on the fresh and hardened properties of 3D printed concrete (3DPC). Five mix designs were prepared with MK replacement levels of 0%, 10%, 12.5%, and 15%, along with one mix containing 10% MK and 5% SF.
Marwah M. Thajeel   +2 more
wiley   +1 more source

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