Results 131 to 140 of about 97,295 (251)
To achieve the efficient utilization of magnesium slag, this study investigates the use of magnesium slag, fly ash, and metakaolin as partial substitutes for cement in cementitious materials.
Fulu Wei +5 more
doaj +1 more source
KNaCaSi4O10 Obtained From Crystallization Experiments in the Quaternary System K2O–Na2O–CaO–SiO2
The compound KNaCaSi4O10 has been identified in crystallization experiments of glasses in the quaternary system K2O–Na2O–CaO–SiO2 and has undergone structural characterization. Vibrational spectroscopic data have been acquired and interpreted using density functional theory (DFT) calculations.
Volker Kahlenberg +2 more
wiley +1 more source
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
Influence of Pulverized Lightweight Pumice Fine Aggregate on the Cement Mortar’s Dry Shrinkage
The use of lightweight aggregates in cement concrete manufacturing solves the issue of drying shrinkage over the concrete's life span; nevertheless, the use of artificial lightweight sand may increase this issue in the cement mortar. This research looks
Ferhad Rahim Karim
doaj +1 more source
Quality of type I Portland cement from Ghana and UK [PDF]
Type I Portland cement is general purpose cement found in many countries and it is manufactured by different companies. This study sought to compare the properties of Type I Portland cements from Ghana (less economically developed country) and United ...
Boateng, Isaac, Danso, Humphrey
core +2 more sources
The Stability of Gyrolite and Influence of Fe(III)
ABSTRACT Gyrolite (Ca4Si6O15(OH)2·4H2O) is a crystalline calcium silicate hydrate which forms hydrothermally and is primarily used as an adsorbent for wastewater treatment. The stability of gyrolite is poorly understood, as well as the potential impact of Fe, which can be present as an impurity in the raw materials used.
Serena Mingione +4 more
wiley +1 more source
Monitoring the reduction in shrinkage cracking of mortars containing superabsorbent polymers [PDF]
Ultra-high performance concrete (UHPC) is characterized by a low water-to-cement ratio, leading to improved durability and mechanical properties. However, the risk for autogenous shrinkage and cracking due to restrained shrinkage increases, which may ...
Aggelis, Dimitrios G. +5 more
core
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
Cold Sintering of Calcite: A Low‐Temperature Method for the Fabrication of Artificial Marble
Comparison of the hardness of cold and conventionally sintered calcite with artificial marble. ABSTRACT This study presents a novel approach for the low‐temperature fabrication of dense calcite (CaCO3) without the use of a carbon dioxide (CO2) atmosphere.
Eleni Georgiou +2 more
wiley +1 more source
Mechanochemical Deep Impact: Delivering Sustainable Synthesis and Hydrogen Innovation
Planetary ball milling unlocks sustainable routes to advanced materials and hydrogen. Transient extreme conditions created during collisions drive highly efficient transformations, enabling the synthesis of visible‐light‐active TiO2, alkoxysilanes, and hydrogen through impact‐induced mechanochemistry.
Ken‐ichi Saitow
wiley +1 more source

