Results 71 to 80 of about 173,992 (333)
The Raman Spectrum of Gypsum [PDF]
, 1929 In an investigation of the Raman spectra of some ionized substances in aqueous solution, it was found [1] that the frequency shift given by a solution of potassium carbonate was in fairly close agreement with the strongest shift given by calcite.
Dickinson, Roscoe G., Dillon, Robert T.
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Microbial and metabolic succession on common building materials under high humidity conditions. [PDF]
, 2019 Despite considerable efforts to characterize the microbial ecology of the built environment, the metabolic mechanisms underpinning microbial colonization and successional dynamics remain unclear, particularly at high moisture conditions. Here, we applied
Cardona, Cesar +12 more
core +3 more sources
Deep Underground Science and Engineering, EarlyView.Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei +4 more
wiley +1 more source
GeogacetaThe Polemi basin (S Cyprus) records a well exposed Messinian Salinity Crisis (MSC) evaporite succession divided into three lithostratigraphic units: Lower Gypsum, Intermediate Gypsum Breccia, and Upper Gypsum.
David Artiaga Torres +3 more
doaj +1 more source
a-Hemihydrate Gypsum from Flue Gas Desulphurization Gypsum
Materials Science, 2013 In this work, properties of sulphate technogenic raw material – flue gas desulphurization (FGD) gypsum have been investigated in order to obtain α-hemihydrate gypsum as gypsum binding material. FGD gypsum is produced as a by-product during the process of desulphurization of exhaust gas emitted in power stations heated by fuel containing sulphur. It has
Leškevičienė, Violeta +2 more
openaire +3 more sources
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
On modelling moisture buffering when evaluating humidity controlled HVAC systems [PDF]
, 2009 As most building energy simulation programs focus on the thermal response of the building, the relative humidity of the indoor air is often calculated in a simplified way.
De Paepe, Michel +4 more
core +1 more source
The impact of intrinsic anhydrite in an experimental calcium sulfoaluminate cement from a novel, carbon-minimized production process [PDF]
, 2017 Gulf Organisation for Research and Development EG016-RG11757 Open access via Springer Compcat Agreement The authors are grateful for the financial support of the Gulf Organization for Research and Development (GORD) through grant EG016-RG11757.
Galan, Isabel +5 more
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Cement phases are good materials for radiative cooling thanks to the selective emissivity in IR ATW. Cement powders have high reflectance of solar radiation which reduces the thermal losses. The onset of the absorption curves is defined by bound excitons. Sulfates have higher radiated powers and reflectance than calcium silicates.
Jozef Janovec +3 more
wiley +1 more source
In-situ early age hydration of cement-based materials by synchrotron X-ray powder diffraction [PDF]
, 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
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