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Funded by the National Key Research and Development Program of China(No.2022YFC3803400);National Natural Science Foundation of China(Nos.52378255,52278270);Shanghai Municipal Science and Technology Major Project(No.2021SHZDZX0100);the Fundamental Research Funds for the Central Universities and the Experimental Center of Materials Science and Engineering in Tongji University。
We focused on the efflorescence induced microstructural evolution of ettringite-rich systems prepared with calcium aluminate cement(CAC)and anhydrite.The effects of anhydrite on the visible efflorescence,and the corre...
the Fundamental Research Funds for the Central Universities(Project No.2022CDJKYJH037);the National Key R&D Program of China(Grant No.2021YFB3901402)。
To study the damage mechanisms of anhydrite rock under freeze-thaw cycles, the physicalmechanical properties and the microcracking activities of anhydrite rock were investigated through mass variation, nuclear magneti...
the National Natural Science Foundation of China for financial support (Grant No. 51578091)
To study the deterioration mechanisms of anhydrite rock under the freeze-thaw weathering process,the physico-mechanical characteristics and microstructure evolutions of anhydrite samples were determined by a series of...
supported by National Science Foundation of China (41802173).
1.Objective Yican 1 well, drilled in Southeastern Ordos Basin by Oil & Gas Survey, China Geological Survey in 2014 produced 3.7×104 m3 natural gas daily, which is the most productive well in the area by far. However,...
The stability of underground abandoned gypsum mines is dependent on the gypsum pillar's strength,and most abandoned mines are in a fully saturated condition. Moisture affects the strength of gypsum and is therefore co...
Minerals are deposited when evaporation is greater than atmospheric precipitation. Calcium sulfates are one of the most important evaporative minerals which have been expanding over the past few years. In the formatio...
supported by the National Major Scientific and Technological Special Project(No.2011ZX05029-003);the project of the Research Institute of Petroleum Exploration&Development(No.2012Y-058)
Wave velocities in haloanhydrites are difficult to determine and significantly depend on the mineralogy. We used petrophysical parameters to study the wave velocity in haloanhydrites in the Amur Darya Basin and constr...
supported by the China Ocean Mineral Resource R & D Association (COMRA) Projects (Nos. DY125-13-R-08, DY125-13-R-01, and DY125-13-R-05)
High resolution sampling, for Sr isotope and REE analyses, was carried out along a transaction of L vent chimney collected from East Pacific Rise 9oN–10oN. Sr isotopes show these anhydrites are precipitated from a mi...
The effects of calcination and modification on the morphology (shapes and textures) and crystal structure of anhydrite powders were studied. The results show that, calcination at 100℃ causes anhydrite to disintegra...
The dehydration process of gypsum rock was studied under concentrated solar energy by using a Fresnel lens with power density of 260 Wcm-2. Temperatures higher than 700。C were attained for 1 min of solar exposure. Th...