A Novel Rejuvenating Method for Structural and Performance Recovery of Aged SBS-Modified Bitumen

2022 ◽  
Author(s):  
Xue Yang ◽  
Henglong Zhang ◽  
Wanzhou Zheng ◽  
Zihao Chen ◽  
Caijun Shi
Keyword(s):  
Modified Bitumen ◽  
Performance Recovery ◽  
And Performance

scholarly journals 1 Physiological and performance recovery after fourteen hours of feed restriction or transportation in Holstein bulls fed high concentrate diets

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 2-3
Author(s):  
Sonia Marti ◽  
Elena Garcia ◽  
Christine Gerard ◽  
Joan Grau ◽  
Nicolas Cirier ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Feed Restriction ◽  
Amyloid A ◽  
Performance Recovery ◽  
Treatment Data ◽  
Access To Water ◽  
Holstein Calves ◽  
Holstein Bulls ◽  
And Performance ◽  
Beta Hydroxybutyrate

Abstract One hundred and eight Holstein calves (225 ± 1.1 kg and 187 ± 5.2 d) were used to evaluate the physiological and performance recovery after 14 h transportation or feed restriction. Calves were distributed into 6 pens (2 pens/treatment) according to control (CTR, n = 36) calves with ad libitum access to concentrate, straw and water; restricted (RES, n = 36) calves with concentrate restriction but with access to water and straw for 14 h; and transported (TRA, n = 36) calves that were loaded into a trailer and transported without feed or water for 14 h. On days 0, 7, 21, and 35 BW was recorded. Concentrate intake were recorded daily. Blood samples for non-esterified fatty acids (NEFA), beta-hydroxybutyrate (BHBA), and serum amyloid-A (SAA) were collected at -24, -14, 0 h, and 6, 24, and 168 h post-treatment. Data were analyzed using mixed models with repeated measures. At 24 h, RES and TRA had greater (P < 0.05) concentrate intake compared with CTR. However, from d 7 to 35 after treatments, only TRA had similar concentrate intake than CTR, while RES had lesser (P < 0.05) concentrate intake than CTR and TRA. RES at 6 h had greater (P < 0.05) NEFA concentrations than TRA, and NEFA concentrations were still higher for the RES and TRA groups than those for the CTR after 24 h. After 24 h concentrations of serum BHBA for TRA and RES were significantly greater (P < 0.05) when compared with those for the CTR. Serum concentration of SAA for TRA and RES was greater (P < 0.05) than CTR until 168 h. Results showed similar effects of 14 h of feed restriction and transportation of calves on serum anorexia and inflammation parameters; however, feed intake was recovered after d 35 in transported calves but not in feed restricted calves without transportation.

Laboratory investigation of modified bitumen for interlayer in rigid–flexible composite pavement

2020 ◽  
pp. 089270572093914 ◽  
Author(s):  
Gholamali Shafabakhsh ◽  
Saeed Ahmadi
Keyword(s):  
Shear Strength ◽  
Hydrated Lime ◽  
Crumb Rubber ◽  
Modified Bitumen ◽  
Direct Shear Tests ◽  
Application Rates ◽  
Shear Fatigue ◽  
Tack Coat ◽  
Bonding Properties ◽  
And Performance

Adhesion of composite pavement plays a significant role in the durability and maintenance of this type of pavement. The present research aims to assess the bonding and fatigue performance of rigid–flexible composite pavements through laboratory testing at different tack coat application rates. Three types of modified bitumen, crumb rubber-modified bitumen containing hydrated lime (CR/HL), crumb rubber-modified bitumen containing natural zeolite (CR/NZ), and crumb rubber-modified bitumen (CRMB), were selected as the tack coat. Shear fatigue and direct shear tests were utilized to assess the bonding properties of tack coats. The study also examines the behavior of modified bitumen by examining its viscosity, rheological properties, and performance grade. The results show that CR/NZ exhibits better performance in rheological behavior and at various temperatures compared to CR/HL and CRMB. Also, depending on the type of tack coat, shear strength tests show a range of 0.6–0.9 l m−2 as the optimal tack coat dosage. Finally, based on the optimal tack coat, shear strength ratings for various bitumen types may be classified as CRMB < CR/HL < CR/NZ.

Massage and Performance Recovery: A Meta-Analytical Review

2016 ◽  
Vol 46 (2) ◽  
pp. 183-204 ◽  
Author(s):  
Wigand Poppendieck ◽  
Melissa Wegmann ◽  
Alexander Ferrauti ◽  
Michael Kellmann ◽  
Mark Pfeiffer ◽  
...  
Keyword(s):  
Performance Recovery ◽  
Analytical Review ◽  
And Performance
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