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A study conducted by Chang'an University in Xi'an, China, explores the impact of high temperatures on the pore structure and moisture transfer mechanisms of concrete. Concrete samples exposed to temperatures ranging from 200 to 800 degrees Celsius were analyzed using scanning electron microscopy (SEM) and nuclear magnetic resonance (NMR) techniques. The results indicate that high temperatures significantly affect the capillary water absorption process in concrete, leading to changes in pore sizes and the type of pore filling. This research provides valuable insights into the behavior of concrete under extreme heat conditions. [Extracted from the article]

Researchers from Xi'an University of Technology in China have conducted a study on stabilizing aeolian sand, which is difficult to use as construction material due to its poor gradation and loose structure. The researchers mixed fiber, silt, and cement to stabilize the sand and found that the addition of fibers and silt significantly improved the strength and ductility of the cement-stabilized aeolian sand. Under optimal mixing conditions, the strength of the sample increased by 274.2% compared to ordinary cement-stabilized aeolian sand. The study suggests that using local silt to stabilize aeolian sand can improve mechanical properties, reduce project costs, and have environmental benefits. The findings have important implications for engineering and design in aeolian sand areas. [Extracted from the article]

Keywords for this news article include: Xi'an, People's Republic of China, Asia, Building and Construction, Chemicals, Sodium Hydroxide, Xi'an University of Technology. SEM and 1H NMR results show that the UMK geopolymer prepared with a high concentration of NaOH is fully hydrated and has a dense structure. Keywords: Xi'an; People's Republic of China; Asia; Building and Construction; Chemicals; Sodium Hydroxide EN Xi'an People's Republic of China Asia Building and Construction Chemicals Sodium Hydroxide 1984 1984 1 04/10/23 20230414 NES 230414 2023 APR 14 (NewsRx) -- By a News Reporter-Staff News Editor at Health & Medicine Week -- A new study on Building and Construction is now available. [Extracted from the article]