Results 31 to 40 of about 915,660 (303)

Freeze-thaw damage evaluation and model creation for concrete exposed to freeze–thaw cycles at early-age [PDF]

, 2021
Concrete subjected to freeze–thaw cycles action at early-age will suffer serious physical damage, resulting in degradation of the concrete’s performance.
Elfgren, Lennart,, Tu, Yongming, Liu, Dongyun, Liu, Dongyun,, Tu, Yongming,, Sas, Gabriel,, Elfgren, Lennart, Sas, Gabriel   +7 more
core   +1 more source

NMR Pore Structure and Dynamic Characteristics of Sandstone Caused by Ambient Freeze-Thaw Action

Shock and Vibration, 2017
For a deeper understanding of the freeze-thaw weathering effects on the microstructure evolution and deterioration of dynamic mechanical properties of rock, the present paper conducted the nuclear magnetic resonance (NMR) tests and impact loading ...
Bo Ke, Keping Zhou, Hongwei Deng, Feng Bin   +3 more
doaj   +1 more source

Experimental investigation of the pore fractal characteristics and damage degradation mechanism of sandstone after cyclic Freeze‒thaw treatments

Journal of Materials Research and Technology, 2023
To reveal the microscopic pore characteristics and strength weakening mechanism of rock under the influence of cyclic freeze-thaw treatment, uniaxial compression tests and MIP (mercury intrusion porosimetry) were conducted on red sandstone specimens with
Ke Ou, Changsong Wang, Ri-hong Cao, Hang Lin, Lei Fang   +4 more
doaj   +1 more source

Hero tags protect Fluc activity from freeze-thaw cycles.

, 2022
(A) Schematic representation of the freeze-thaw cycles. (B) Freeze-thaw cycles of Fluc-WT. Fractions of remaining Fluc activities after the second cycle were calculated. Mean ± SD from 5 independent experiments are shown.
Eri Morimoto (12890115), Kotaro Tsuboyama (8565765), Yukihide Tomari (9413)   +2 more
core   +1 more source

Triaxial Creep Behavior of Red Sandstone in Freeze-Thaw Environments

Geofluids, 2020
To investigate the time-dependent mechanical properties of rock masses in cold regions under the effects of freeze-thaw cycling and long-term loading, triaxial multilevel loading and unloading creep tests were performed on saturated red sandstone samples
Yongjun Song, Yongxin Che, Leitao Zhang, Jianxi Ren, Shaojie Chen, Mengling Hu   +5 more
doaj   +1 more source

Effect of Repeated Freeze–Thaw Cycles on Influenza Virus Antibodies

, 2021
Background: Vaccine effectiveness relies on various serological tests, whose aim is the measurement of antibody titer in serum samples collected during clinical trials before and after vaccination.
Alessandro Torelli, Laura Palladino, Pietro Piu, Elena Gianchecchi, Emanuele Montomoli, Luciano Michele La Magra, Silvia Marconi, Ginevra Marzucchi, Luisa Ganfini, Bernardo Biagi, Martina Monti, Irene Barneschi, Carolina Bonifazi, Ramona Pace, Rosa Coluccio   +14 more
core   +1 more source

The Effect of Freeze-Thaw Damage on Corrosion in Reinforced Concrete

Advances in Materials Science and Engineering, 2021
The existing studies of the corrosion of reinforced concrete have mainly focused on the interface area and chemical ion erosion, ignoring the specific service environment of the reinforced concrete.
Xiao-Chun Lu, Bin Guan, Bo-Fu Chen, Xin Zhang, Bo-bo Xiong   +4 more
doaj   +1 more source

Study on the Frost Heaving Characteristics and Strength Deterioration of Saturated Red Sandstone Under a Unidirectional Freeze–Thaw Cycle

Applied Sciences
In order to explore the influence of the temperature gradient on rock failure degree during freezing and thawing, freeze–thaw-cycle tests were carried out on saturated red sandstone under the conditions of all-directional freeze–thaw and unidirectional ...
Zhongyao Li, Qingyang Ren, Zhen Liu, Peiqing Wang, Hao Tang   +4 more
doaj   +1 more source

The effects of heat and freeze-thaw cycling on naloxone stability [PDF]

Harm Reduction Journal, 2019
The availability of take home naloxone (THN) was increased for Canadians in 2016, including access to kits via pharmacies. Unlike typical over-the-counter (OTC) and prescription drugs, THN kits may be stored in non-standard conditions, including in vehicles, backpacks, and out of doors.
Dulcie Lai, Amy Trinh Pham, Praveen P. Nekkar Rao, Michael A. Beazely   +3 more
openaire   +3 more sources

Dynamic behavior of fiber-reinforced soil under freeze-thaw cycles [PDF]

, 2017
This research presents the dynamic behavior of fiber-reinforced soil exposed to freeze-thaw cycles. The series of dynamic triaxial tests were conducted on fine-grained soil mixed with different percentages of basalt and glass fibers subjected to freeze-
Liu, Jiankun, Orakoğlu, Müge Elif, Fujun Niu, Jiankun Liu, Niu, Fujun, Muge Elif Orakoglu   +5 more
core   +1 more source