Results 21 to 30 of about 156,182 (239)

Properties of Keene's Cement-Quick Set Locally Product

open access: yesTikrit Journal of Engineering Sciences, 2016
Gypsum has been used as building material over a very long period of time. The production of gypsum plaster in Iraq confined on three types; plaster of Paris, ordinary gypsum and mechanical gypsum.
Nadia S. Esmael, Muhanned S. Gereed
doaj   +3 more sources

Study of rock displacement with the help of equivalent materials using room-and-pillar mining method [PDF]

open access: yes, 2012
Field study made with the help of equivalent materials to determine minimum dimension of interchamber and barrier pillars and limiting chamber span was carried out.
Buzilo, V.I.   +2 more
core   +1 more source

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+4 more sources

Sulfur (34S/32S) isotope composition of gypsum and implications for deep cave formation on the Nullarbor Plain, Australia

open access: yesInternational Journal of Speleology, 2019
Large deep caves with little relation to surface topography are distinctive karst features on the Nullarbor Plain of Australia. The presence of gypsum deposits and chemoautotrophic bacteria within the caves have been suggested as evidence for cave ...
Matej Lipar   +3 more
doaj   +1 more source

Reconnaissance Study of Gypsum from the Fatha Formation as Raw Material for Production of Gypsum Powder in Shaqlawa Area, Erbil, Kurdistan Region, Iraq

open access: yesIraqi Geological Journal, 2022
The quality of gypsum rock as raw material from the Fatha Formation in Talajar Village in the Shaqlawa area for ground gypsum production was assessed. A total of three samples of gypsum were collected from different locations of the same horizon
Rzger Abdulkarim Abdula   +3 more
doaj   +1 more source

Ultrasonic sound speed analysis of hydrating calcium sulphate hemihydrate \ud [PDF]

open access: yes, 2011
This article focuses on the hydration, and\ud associated microstructure development, of b-hemihydrate\ud to dihydrate (gypsum). The sound velocity is used to\ud quantify the composition of the fresh slurry as well as the\ud hardening and hardened—porous ...
Brouwers, H.J.H., Korte, A.C.J. de
core   +5 more sources

Processing of Gypsum Construction and Demolition Waste and Properties of Secondary Gypsum Binder

open access: yesRecycling, 2022
The waste amount coming from construction and demolition (CDW) has significant volume and potential to provide the backbone of a secondary material bank.
Girts Bumanis   +3 more
doaj   +1 more source

Roles of gypsum/salt-bearing sequence in hydrocarbon accumulation and storage

open access: yesEnergy Geoscience, 2023
Gypsum/salt beds are widely developed in petroliferous basins across the world. Most basins with gypsum/salt beds have been proven to host abundant hydrocarbon resources.
Wenhui Liu   +7 more
doaj   +1 more source

Impact of Wetting–Drying Cycles on the Mechanical Properties and Microstructure of Wood Waste–Gypsum Composites [PDF]

open access: yes, 2019
Large amounts of wood waste are generated each year in the world. In an attempt to identify a good recovery option for those residues, wood waste from construction and demolition works were used as raw materials in gypsum plasters.
Morales Conde, María Jesús   +3 more
core   +1 more source

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