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Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 184-188 doi: 10.1007/s11709-008-0029-3

Abstract: Adopting the ASTM C666 quick freeze-thaw method, freeze-thaw tests with the number of freeze-thaw cycleswere observed by means of scanning electron microscopy (SEM) in order to detect damages caused by the freeze-thawfrozen-thawed specimens were tested on monotonic axial load; stress-strain testing curves after the freeze-thawThe testing results show that with the increasing time of freeze-thaw cycles, both the internal micro-structuresreference for further research on the behavior and the calculation model of concrete structures in a freeze-thaw

Keywords： stress-strain theoretical     freeze-thaw     capacity     reference     eighteen concrete    

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Investigation on the freeze-thaw damage to the jointed plain concrete pavement under different climate

Shuaicheng GUO, Qingli DAI, Jacob HILLER

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 2,   Pages 227-238 doi: 10.1007/s11709-017-0426-6

Abstract: Freeze-thaw damage is one of the main threats to the long time performance of the concrete pavement inThis project aims to evaluate the influence of the freeze-thaw damages on pavement distresses under differentBased on the Long-Term Pavement Performance (LTPP) data base, the freeze-thaw damage generated by fourdifferent kinds of climate conditions are considered in this project: wet-freeze, wet-non freeze, dry-freezeThese results showed the reasonable freeze-thaw damage development with pavement service life and under

Keywords： LTPP     elastic modulus     k-value     IRI     MEPDG    

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Experimental investigation on freeze−thaw durability of polymer concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1038-1046 doi: 10.1007/s11709-021-0748-2

Abstract: Freeze–thaw is one such test that indicates the ability of concrete to last a long time without a significantIn this study, the freeze–thaw resistance of polymer concrete containing different polymer contents waselasticity, and residual compressive strength were determined for all types of concretes subjected to freeze–thawthat polymer concrete (PC) specimens prepared with higher dosages of polymer contents possessed better freeze–thaw

Keywords： durability test     freeze-thaw resistance     polymer concrete     residual compressive strength     ASTM C666-15    

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Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 781-792 doi: 10.1007/s11709-021-0733-9

Abstract: construction-induced damage can be more significant than those from the service environment of LCC, such as freeze–thaw

Keywords： lightweight cellular concrete     construction-induced damage     freeze-thaw action     microstructure     degradation    

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emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete under freeze–thaw

Frontiers of Structural and Civil Engineering   Pages 1341-1356 doi: 10.1007/s11709-023-0988-4

Abstract: This study empirically investigated the influence of freeze–thaw cycling on the dynamic splitting tensilemm/s) on specimens with four steel fiber contents (0%, 0.6%, 1.2%, and 1.8%) subjected to 0 and 50 freeze–thawThe results quantified using the freeze–thaw damage factor defined in this paper indicate that the degreeof damage to SFRC caused by freeze–thaw cycling was aggravated with increasing loading rate but mitigatedFreeze–thaw action had little effect on the crack types observed during the early and middle stages of

Keywords： steel fiber reinforced concrete     freeze–thaw cycling     Brazilian disc splitting test     acoustic emission    

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Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Frontiers of Structural and Civil Engineering   Pages 1326-1340 doi: 10.1007/s11709-023-0014-x

Abstract: Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Keywords： strain relationship concrete    

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Biosorption of Cr(III) from aqueous solution by freeze-dried activated sludge: Equilibrium, kinetic and

Qian YAO, Hua ZHANG, Jun WU, Liming SHAO, Pinjing HE,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 286-294 doi: 10.1007/s11783-010-0025-4

Abstract: Batch biosorption experiments were conducted to remove Cr(III) from aqueous solutions using activated sludge from a sewage treatment plant. An investigation was conducted on the effects of the initial pH, contact time, temperature, and initial Cr(III) concentration in the biosorption process. The results revealed that the activated sludge exhibited the highest Cr(III) uptake capacity (120 mg·g) at 45°C, initial pH of 4, and initial Cr(III) concentration of 100 mg·L. The biosorption results obtained at various temperatures showed that the biosorption pattern accurately followed the Langmuir model. The calculated thermodynamic parameters, Δ (−0.8– −4.58 kJ·mol), Δ (15.6–44.4 kJ·mol), and Δ (0.06–0.15 kJ·mol·K) clearly indicated that the biosorption process was feasible, spontaneous, endothermic, and physical. The pseudo first-order and second-order kinetic models were adopted to describe the experimental data, which revealed that the Cr(III) biosorption process conformed to the second-order rate expression and the biosorption rate constants decreased with increasing Cr(III) concentration. The analysis of the values of biosorption activation energy ( = −7 kJ·mol) and the intra-particle diffusion model demonstrated that Cr(III) biosorption was film-diffusion-controlled.

Keywords： activated sludge     biosorption     chromium     film diffusion     kinetics     thermodynamics    

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Intracellular trehalose improves the survival of human red blood cells by freeze-drying

HE Hui, LIU Baolin, HUA Zezhao, LI Chuan, WU Zhengzheng

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 120-124 doi: 10.1007/s11708-007-0014-x

Abstract: Freeze-drying of human red blood cells has a potential important application for blood transfusion.was to investigate the effects of intracellular trehalose on the survival of red blood cells after freeze-dryingblood cells were incubated in trehalose solutions of various concentrations at 37vH for 7 h following freeze-dryingTrehalose, sodium citrate, and human serum albumin were used as extracellular protective agents for the freeze-dryingThe viability of freeze-dried red blood cells increased with the increment of intracellular trehalose
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AIE-Active Freeze-Tolerant Hydrogels Enable Multistage Information Encryption and Decryption at Subzero Article

Xiaojie Sui, Xiaodong Wang, Chengcheng Cai, Junyi Ma, Jing Yang, Lei Zhang

Engineering 2023, Volume 23, Issue 4,   Pages 82-89 doi: 10.1016/j.eng.2022.03.021

Abstract:

Freeze-tolerant hydrogels can regulate the freezing behavior of the water inside them at subzero temperaturesHerein, a series of aggregation-induced emission (AIE)-active freeze-tolerant hydrogels are developed

Keywords： Freeze-tolerant hydrogels     Aggregation-induced emission     Encryption     Decryption     Anticounterfeiting    

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Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Jian LI,Caichao WAN,Yun LU,Qingfeng SUN

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 1,   Pages 46-52 doi: 10.15302/J-FASE-2014004

Abstract: With further combined regeneration process and freeze-drying, the cellulose aerogel was successfully

Keywords： cellulose aerogel     absorptive capacity     waste wheat straw     freeze-drying    

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Comparison study on strategies to prepare nanocrystalline Li

Qiang XIAO, Xiaodan TANG, Yefeng LIU, Yijun ZHONG, Weidong ZHU

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 3,   Pages 297-302 doi: 10.1007/s11705-013-1346-1

Abstract: solid-state and liquid-phase methods, citrate route, and starch-assisted sol-gel method combined with freeze-dryinghas poor reproducibility and scalability, whereas the starch-assisted sol-gel method combined with freeze-drying

Keywords： >2 capture     Li2ZrO3     K-doped Li2ZrO3     citrate     starch     freeze-drying    

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Freezing-Extraction/Vacuum-Drying Method for Robust and Fatigue-Resistant Polyimide Fibrous Aerogels and Their Composites with Enhanced Fire Retardancy Article

Kaiqing Yao, Chonghu Song, Hong Fang, Feng Wang, Lian Chen, Shaohua Jiang, Guojun Zha, Haoqing Hou

Engineering 2023, Volume 21, Issue 2,   Pages 152-161 doi: 10.1016/j.eng.2021.08.024

Abstract: In this work, a freeze-extraction method combined with normal vacuum drying (VD), using short electrospun

Keywords： Polyimide aerogel     Freeze-extraction     Vacuum-drying     Mechanical property     Thermal insulation     Fire retardancy    

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Title Author Date Type Operation

Stress-strain relationship of concrete in freeze-thaw environment

ZOU Chaoying, ZHAO Juan, LIANG Feng

Journal Article

Investigation on the freeze-thaw damage to the jointed plain concrete pavement under different climate

Shuaicheng GUO, Qingli DAI, Jacob HILLER

Journal Article

Experimental investigation on freeze−thaw durability of polymer concrete

Journal Article

Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete

Journal Article

emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete under freeze–thaw

Journal Article

Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Journal Article

Biosorption of Cr(III) from aqueous solution by freeze-dried activated sludge: Equilibrium, kinetic and

Qian YAO, Hua ZHANG, Jun WU, Liming SHAO, Pinjing HE,

Journal Article

Intracellular trehalose improves the survival of human red blood cells by freeze-drying

HE Hui, LIU Baolin, HUA Zezhao, LI Chuan, WU Zhengzheng

Journal Article

AIE-Active Freeze-Tolerant Hydrogels Enable Multistage Information Encryption and Decryption at Subzero

Xiaojie Sui, Xiaodong Wang, Chengcheng Cai, Junyi Ma, Jing Yang, Lei Zhang

Journal Article

Fabrication of cellulose aerogel from wheat straw with strong absorptive capacity

Jian LI,Caichao WAN,Yun LU,Qingfeng SUN

Journal Article

Comparison study on strategies to prepare nanocrystalline Li

Qiang XIAO, Xiaodan TANG, Yefeng LIU, Yijun ZHONG, Weidong ZHU

Journal Article

Freezing-Extraction/Vacuum-Drying Method for Robust and Fatigue-Resistant Polyimide Fibrous Aerogels and Their Composites with Enhanced Fire Retardancy

Kaiqing Yao, Chonghu Song, Hong Fang, Feng Wang, Lian Chen, Shaohua Jiang, Guojun Zha, Haoqing Hou

Journal Article