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This dataset contains a collection of digitized three-dimensional hardened cement paste microstructures obtained from X-ray micro-computed tomography. Four sets of ordinary Portland cement-based pastes were produced and X-ray screened, varying in the initial water-to-cement ratio (wcr=0.35 and 0.50) and fineness of cement used (391 and 273 m/kg Blaine). Individual paste samples from each set were screened after 1, 2, 3, 4, 7, 14, and 28 days of elapsed hydration at 20˚C in saturated conditions. Each digitized paste specimen captures a realistic spatial configuration of the principal microstructural phases (anhydrous cement, hydration products, and large capillary porosity). The dataset may be further used for assessing changes in the mix design on the resultant spatial configuration of the paste microstructure or aid the development of microstructure-inspired micromechanical models based on realistic material configuration.
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http://dx.doi.org/10.1016/j.dib.2023.108903 | DOI Listing |
Environ Res
September 2025
School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083, China; Key Laboratory of Safe and Green Mining of Metal Mines with Cemented Paste Backfill, National Mine Safety Administration, University of Science and Technology Beijing, Beijing 100083, Chi
Cemented paste backfill has made outstanding contributions to the large-scale consumption of phosphogypsum (PG), but poor water resistance significantly weakens the mechanical strength, promotes the leaching of total soluble phosphate (TP) and fluoride ions (F), and reduces its attractiveness in mine engineering. This research synthesized a curing agent (CA) using sodium methylsilicate, sodium silicate, and polyaluminum chloride (PAC). PG produced from Deyang Haohua Qingping Phosphate Mine Co.
View Article and Find Full Text PDFEnviron Res
September 2025
Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, Wuhan University of Technology, Wuhan, Hubei 430070, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China. Electronic address: yubiao
In order to promote the development and application of low-carbon cement varieties and the recycling of industrial solid waste, this study used iron tailings and fluorogypsum to prepare iron-rich belite-sulfoaluminate cement (I-BCSA). The suitable conditions for the preparation of I-BCSA in this system were with an excessive addition of 6 wt% of SO in the raw meal, at a calcination temperature of 1250 °C for 1.5 h, and an added-gypsum content of 15 wt%.
View Article and Find Full Text PDFJ Mater Sci Mater Med
August 2025
Applied Chemistry Program, Graduate School of Science and Technology, Meiji University, Kawasaki, Japan.
Calcium-phosphate cement (CPC), a paste-like artificial bone, is a material form that allows minimally invasive treatment. However, CPC is not infection resistant, which may lead to surgical site infections. We recently developed a paste-like organic/inorganic hybrid artificial bone that is compatible with the bone remodeling cycle.
View Article and Find Full Text PDFSci Rep
August 2025
Department of Civil and Environmental Engineering, College of Engineering, Majmaah University, Al Majmaah, 11952, Saudi Arabia.
Foamed concrete (FC) is a lightweight cementitious material made by adding a stable pre-formed foam to a cement paste or mortar to make a homogenized mixture of a controlled low density. The present work aims at evaluating the effect Scrap Aluminum Engine Residue (SAER) has on fresh, mechanical, thermal, and microstructural properties of FC with a water-to-cement ratio of 0.4 at targeted densities of 900 kg/m (FC-900) and 1100 kg/m (FC-1100).
View Article and Find Full Text PDFMaterials (Basel)
August 2025
Department of Civil Engineering, College of Engineering, Kyung Hee University, Yongin 17104, Republic of Korea.
Geopolymer concrete uses a geopolymer binder instead of traditional Portland cement; thus, it reduces carbon emissions by a significant amount. In this study, Edge-Oxidized Graphene Oxide (EOGO), a carbon-based nanomaterial, was added into a metakaolin-based geopolymer, and its effect on the mechanical and rheological properties of the mixture was investigated. EOGO was added into the mixture at 0% (control), 0.
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