Results 61 to 70 of about 8,920 (223)
ABSTRACT This study presents new evidence for the early use of lime mortar during the Early Iron Age at the Piscina Torta site (Ostia, Italy), situated on the earliest Holocene beach ridges in the southern Tiber delta. The site, which was earlier described as a briquetage site, dates from between the late 8th and 6th century BCE and consists of a large
Francesca Bulian +5 more
wiley +1 more source
Our study provides evidence that active restoration of deep‐sea CWCs habitats is technically feasible when guided by a rigorous, multidisciplinary approach integrating habitat mapping, ecological aspects and long‐term monitoring. The methodological framework presented here is intended to provide an operational template for designing and scaling ...
Giorgio Castellan +25 more
wiley +1 more source
Properties of cement with addition of volcanic tuffs and zeolite
The article consists of the research results of influence of zeolite and volcanic tuff on the processes of hydration of blended cements and their properties.
Potapova Ekaterina +3 more
doaj +1 more source
Review of the Effect of Grinding Aids and Admixtures on the Performance of Cements
Grinding aids (GAs) are polar chemicals introduced in cement mills in either liquid or powder form to improve on mill grindability efficiency. Studies have shown that some GAs not only help in grinding efficiency but also play vital roles in improving ...
Eric Nthiga Njiru +4 more
doaj +1 more source
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
In recent years, due to technical and economical advantages, the production of pozzolanic cements have considerably extended. In the case of asphalt recycling, using Pozzolonic cements has several advantages.
Amir Kavussi +2 more
doaj +1 more source
The complex binder based on Portland cement andash-and-slag wastes from thermal power stations [PDF]
Increase in the balance of boiler and furnace fuel of the energy sector of the Republic of Belarus the proportion of own energy resources (milling peat and wood chips) places priority on resolving the issues of utilization of ash-and-slag wastes and ...
Vysotskaya, Maryia
core
ABSTRACT Hydration temperature and particle size strongly influence the reaction kinetics of supplementary cementitious materials (SCMs). This study focuses on quantifying and modeling these effects on ground granulated blast furnace slag (GGBFS) hydration in the R3 model system.
Lepêcheur Guillaume +4 more
wiley +1 more source
Metakaolin sand – a promising addition for Portland cement
The kaolin sand resource at the Vyšný Petrovec quarry in Slovakia comes to a total of 20 megatonnes. The metakaolin material obtained by heating kaolin sand at 650 ºC contains from 31.5 to 40% (wt) metakaolinite, as well as illite, muscovite, quartz and ...
I. Janotka +4 more
doaj +1 more source
Durability properties of alkali pozzolan cement (APC)
This paper compares the durability properties of alkali pozzolan cement (APC) with high volume fly ash (HVFA) cement and ordinary Portland cement (OPC). The susceptibility to durability issues was investigated through the water absorption test using 28-day-old samples.
Chandana Kulasuriya +2 more
openaire +2 more sources

