Article
Geosciences, Multidisciplinary
Alexandre Pichat, Guilhem Hoareau, Michel Lopez, Jean-Paul Callot, Jean-Claude Ringenbach
Summary: The E-W oriented Sivas foreland basin in Turkey experienced a salinity crisis during the Late Eocene, leading to thick evaporite accumulations and intense halokinesis during the Oligo-Miocene period. The transition from marine deposits to evaporitic facies across sedimentological sections reveals different sedimentary features in various parts of the basin, reflecting the progressive transition from marine to continental environments.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Engineering, Geological
Reza Taherdangkoo, Tao Meng, Menad Nait Amar, Yuantian Sun, Ali Sadighi, Christoph Butscher
Summary: The swelling of clay-sulfate rocks is a threat to geotechnical projects, and this study uses neural network models to determine the solubility of gypsum. The results show that the model is accurate and can be used to solve engineering problems related to clay-sulfate rock swelling.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Gabriella Chirco, Monica de Cesare, Giacomo Chiari, Sarah Maass, Maria Luisa Saladino, Delia Francesca Chillura Martino
Summary: This article introduces a white ground ceramic exhibited in the Pietro Griffo Archaeological Museum in Agrigento, Italy, dating back to 450-440 BC. The vase depicts two scenes from the Perseus myth. The study conducted non-destructive and non-invasive investigations, revealing the use of gypsum as the material for the white ground, which is an important finding for similar vases.
Article
Chemistry, Multidisciplinary
Maksim Kamarou, Natalia Korob, Witold Kwapinski, Valentin Romanovski
Summary: The study found that synthetic gypsum is a promising source of gypsum-containing raw materials for producing gypsum binders, with performance that even exceeds that of binders obtained from natural gypsum stone.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Geological
Reza Taherdangkoo, Markus Barsch, Ahmad Ataallah, Tao Meng, Quan Liu, Christoph Butscher
Summary: We developed a coupled hydro-mechanical model to mimic the swelling tests of a clay-sulfate rock specimen. The model was calibrated using the strain-time data obtained from laboratory testing, and a sensitivity analysis was conducted to determine the influential parameters. The model was able to accurately predict the long-term swelling behavior of clay-sulfate rocks, and it was found that at least 24 months of experimental data is needed for accurate calibration.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Engineering, Geological
Reza Taherdangkoo, Thomas Nagel, Anh Minh Tang, Jean-Michel Pereira, Christoph Butscher
Summary: Swelling of clay-sulfate rocks is a serious geo-hazard that can cause damage to infrastructure. Understanding the underlying swelling processes is crucial for safe design and construction. By developing a coupled hydro-mechanical model, the observed heave in Staufen, Germany was accurately reproduced.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Environmental Sciences
Zulfa Ali Al Disi, Fadhil Sadooni, Hamad Al-Saad Al-Kuwari, Tomaso R. R. Bontognali
Summary: In laboratory precipitation experiments, it was found that anhydrite can form at 35 degrees Celsius from evaporated seawater through a microbially influenced mineralization process. This finding provides a possible explanation for the origin of certain natural occurrences of anhydrite and reveals a new precipitation pathway with potential industrial applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Barbara Dutrow, Darrell Henry
Summary: Tourmaline occurrences in various compositional environments have been studied, but its occurrence in meta-evaporites is less commonly investigated. A recent study in France discovered highly magnesian tourmaline in a sulfate-rich, anhydrite-gypsum-bearing meta-evaporite, providing new insights into the formation and composition of these tourmalines.
JOURNAL OF GEOSCIENCES
(2022)
Article
Construction & Building Technology
Sherif Hassan, Hamdy Salah, Nabila Shehata
Summary: The study shows that gypsum and anhydrite have similar performance in vertical cement mill, blending them in different proportions can control cement setting and moisture content, improving cement mill operation and storing.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Thermodynamics
Qiongqiong Luo, Shaoheng Wang, Dehua Cai, Ning Zhang, Dewen Zeng
Summary: In zinc hydrometallurgical processes, a ZnSO4 electrolyte solution with impurity salts such as MnSO4 and MgSO4 is commonly used. However, scaling of CaSO4·2H2O(s) and corrosion by fluorine pose problems in the process. This study investigates the solubility of CaF2(s) in MSO4 (M = Zn, Mn, Mg) aqueous solutions at different temperatures to aid in the removal of Ca2+ and F- ions. The results show that the solubility of CaF2(s) is significantly higher at 348.15 K compared to 298.15 K. The salting-in effect of MSO4 (M = Zn, Mn, Mg) on CaF2(s) solubility is observed, with MgSO4 exerting the strongest influence. The presence of impurity salts MnSO4 and MgSO4 further complicates the system.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Geosciences, Multidisciplinary
Felix L. Arens, Alessandro Airo, Jenny Feige, Christof Sager, Uwe Wiechert, Dirk Schulze-Makuch
Summary: The study in the Atacama Desert in Chile investigated mineralogy, salt abundance, and sulfate stable isotopic composition in four soil profiles. It was found that sulfates are the dominant salts with a transition from gypsum to anhydrite observed in all profiles. This transition is accompanied by an increase of highly soluble salts and a decrease of sulfate delta S-34 and delta O-18 values.
Article
Engineering, Environmental
Mohammad Reza Rahimi, Seyed Davoud Mohammadi, Alireza Taleb Beydokhti
Summary: This study investigates the dissolution rate constant (K-c) of sulfate rocks and finds that pressure, water flow, and mineral composition have significant effects on the dissolution behavior. The solubility of sulfate rocks is approximately 1.9 g/l in ionized water.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Engineering, Geological
E. Alonso, A. Ramon-Tarragona, L. Verda
Summary: This paper presents a procedure for designing tunnel linings in anhydritic formations, considering three-dimensional effects and spatial heterogeneity. The methodology is validated through the analysis of monitoring data from the Lilla tunnel lining. This approach can prevent conservatism in assuming uniform pressures against the lining and using two-dimensional models.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Chongbang Xu, Haoju Fan, Xu Zhao, Lifeng Fan, Peng Wang
Summary: The reaction between gypsum rock and water causes swelling deformation and swelling pressure, leading to damage in underground engineering. Therefore, studying the swelling characteristics of gypsum rock is crucial. In this research, the variation in swelling ratios and pressures with water immersion time was experimentally investigated. An S-shaped model was used to describe the early swelling behavior of gypsum rock. The results showed that the swelling ratio and pressure increased rapidly in the first 120 minutes, and then increased slowly and became stable as the immersion time increased further.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Ceramics
Changrong Liu, Lu Wang, Hongbin Tan, Faqin Dong, Xiaoling Ma, Feihua Yang
Summary: This study investigated the effects of calcined temperature and high strength gypsum on the properties of anhydrite. It was found that the normal consistency of anhydrite decreased with increasing calcined temperature and high strength gypsum content, while the strength and density increased.
JOURNAL OF CERAMIC PROCESSING RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif
ARABIAN JOURNAL OF GEOSCIENCES
(2015)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif
ARABIAN JOURNAL OF GEOSCIENCES
(2016)
Article
Engineering, Environmental
El-Sayed Sedek Abu Seif, Abdullah R. Sonbul, Bader Abdo Hasan Hakami, E. K. El-Sawy
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2016)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif
ARABIAN JOURNAL OF GEOSCIENCES
(2015)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif, Abdulelah A. Bahabri, Abd El-Hamed El-Shater Abd El-Hamed
ARABIAN JOURNAL OF GEOSCIENCES
(2018)
Article
Engineering, Environmental
El-Sayed Sedek Abu Seif
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2015)
Article
Geosciences, Multidisciplinary
Bader A. Hakami, El-Sayed Sedek Abu Seif
ARABIAN JOURNAL OF GEOSCIENCES
(2019)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif, Abdullah Rashed Sonbul
ARABIAN JOURNAL OF GEOSCIENCES
(2019)
Article
Environmental Sciences
Bader A. Hakami, El-Sayed Sedek Abu Seif
ENVIRONMENTAL EARTH SCIENCES
(2019)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif, Abdulelah A. Bahabri
Article
Geosciences, Multidisciplinary
Bader A. Hakami, El-Sayed Sedek Abu Seif, A. A. El-Shater
Article
Environmental Sciences
A. Abdel-Hamed El-Shater, T. M. Mahran, El-Sayed Sedek Abu Seif, Khaleed Mahmoud
ENVIRONMENTAL EARTH SCIENCES
(2020)
Article
Multidisciplinary Sciences
El-Sayed Sedek Abu Seif, Mohamed H. El-Khashab
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2019)
Article
Geosciences, Multidisciplinary
El-Sayed Sedek Abu Seif, Abdullah R. Sonbul
ACTA MONTANISTICA SLOVACA
(2017)
Article
Engineering, Geological
El-Sayed Sedek Abu Seif
INTERNATIONAL JOURNAL OF GEO-ENGINEERING
(2017)