PMID- 33525439
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210210
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 14
IP  - 3
DP  - 2021 Jan 28
TI  - Combining Thermal Loading System with Acoustic Emission Technology to Acquire the 
      Complete Stress-Deformation Response of Plain Concrete in Direct Tension.
LID - 10.3390/ma14030602 [doi]
LID - 602
AB  - The tensile properties of plain concrete are very important for the concrete 
      structural design, and the complete tensile stress-strain curve is essential for 
      creating accurate and reliable designs, especially when considering special load 
      cases such as earthquakes and impacts. To study the complete tensile 
      stress-deformation response of plain concrete, the direct tension tests were 
      conducted on a novel thermal tensile testing machine (TTTM), which was reformed 
      from a hydraulic universal testing machine (UTM). Acoustic emission (AE) 
      technology was applied to monitor the damage process of plain concrete in tests. 
      The TTTM was powered by the thermal expansion of loading columns, and had a 
      stiffness similar to the specimen, thus eliminating the potential AE noises in 
      the UTM, and simulating the rapid fracture process in real concrete structures. A 
      static-dynamic acquisition system was established to obtain the complete tensile 
      stress-strain curves, of which the data before and at the fracture moment were 
      respectively acquired by the static acquisition system and the dynamic 
      acquisition system. The AE technology is a useful approach to analyze the damage 
      process of concrete, and makes it feasible to determine the damage state and the 
      fracture location of the specimen in real time.
FAU - Zhang, Rui
AU  - Zhang R
AD  - Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering 
      Mechanics, School of Civil Engineering, Southeast University, Nanjing 210096, 
      China.
FAU - Guo, Li
AU  - Guo L
AD  - Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering 
      Mechanics, School of Civil Engineering, Southeast University, Nanjing 210096, 
      China.
FAU - Li, Wanjin
AU  - Li W
AD  - Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering 
      Mechanics, School of Civil Engineering, Southeast University, Nanjing 210096, 
      China.
LA  - eng
GR  - 51578142/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20210128
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC7866032
OTO - NOTNLM
OT  - acoustic emission
OT  - complete tensile stress-strain curve
OT  - concrete
OT  - direct tension test
OT  - thermal loading system
COIS- The authors declare no conflict of interest.
EDAT- 2021/02/03 06:00
MHDA- 2021/02/03 06:01
PMCR- 2021/01/28
CRDT- 2021/02/02 01:03
PHST- 2020/11/15 00:00 [received]
PHST- 2021/01/21 00:00 [revised]
PHST- 2021/01/25 00:00 [accepted]
PHST- 2021/02/02 01:03 [entrez]
PHST- 2021/02/03 06:00 [pubmed]
PHST- 2021/02/03 06:01 [medline]
PHST- 2021/01/28 00:00 [pmc-release]
AID - ma14030602 [pii]
AID - materials-14-00602 [pii]
AID - 10.3390/ma14030602 [doi]
PST - epublish
SO  - Materials (Basel). 2021 Jan 28;14(3):602. doi: 10.3390/ma14030602.