Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature
Nowadays, the fire resistance of reinforced concrete members is generally defined by material characteristics at elevated temperatures and temperature functions. However, the influence of steel reinforcement in concrete members exposed to high temperatures on the ultrasonic pulse velocity (UPV) meas...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Mouloud Mammeri University of Tizi-Ouzou
2022-12-01
|
| Series: | Journal of Materials and Engineering Structures |
| Subjects: | |
| Online Access: | https://revue.ummto.dz/index.php/JMES/article/view/3278 |
| _version_ | 1811160015998812160 |
|---|---|
| author | Vinh An LE Thi-Thanh Thao NGUYEN Ngoc Tan NGUYEN |
| author_facet | Vinh An LE Thi-Thanh Thao NGUYEN Ngoc Tan NGUYEN |
| author_sort | Vinh An LE |
| collection | DOAJ |
| description | Nowadays, the fire resistance of reinforced concrete members is generally defined by material characteristics at elevated temperatures and temperature functions. However, the influence of steel reinforcement in concrete members exposed to high temperatures on the ultrasonic pulse velocity (UPV) measurements has still been limited. In this paper, the quality of concrete and steel reinforcement/concrete interface was assessed under high temperatures using UPV measurements. The specimens were classified into four categories: the control tested cubes without rebar; tested cubes with plain and ribbed steel rebars. Tested cubes with dimensions of 100x100x100 mm were cast and cured for 28 days at room temperature (20oC). After drying all specimens at 105oC for 48 hours, these cubes were subjected to four different temperature levels ranging from 150oC to 400oC for 4 hours before being cooled to room temperature. According to the measured values of UPV, the higher the temperature attained in specimens, the greater the following changes occurred in concrete: (i) the degradation within the concrete; (ii) the debonding of steel reinforcements in concrete. |
| first_indexed | 2024-04-10T05:50:31Z |
| format | Article |
| id | doaj.art-38673fd1eab5414b8ee6c1cadf129d61 |
| institution | Directory Open Access Journal |
| issn | 2170-127X |
| language | English |
| last_indexed | 2024-04-10T05:50:31Z |
| publishDate | 2022-12-01 |
| publisher | Mouloud Mammeri University of Tizi-Ouzou |
| record_format | Article |
| series | Journal of Materials and Engineering Structures |
| spelling | doaj.art-38673fd1eab5414b8ee6c1cadf129d612023-03-04T16:15:45ZengMouloud Mammeri University of Tizi-OuzouJournal of Materials and Engineering Structures2170-127X2022-12-01945315372082Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High TemperatureVinh An LE0Thi-Thanh Thao NGUYEN1Ngoc Tan NGUYEN2Faculty of Civil Engeneering, University of Transport and CommunicationsHanoi University of Civil Engineering, 55 Giai Phong Street, Hai Ba Trung District, Hanoi cityHanoi University of Civil Engineering, 55 Giai Phong Street, Hai Ba Trung District, Hanoi cityNowadays, the fire resistance of reinforced concrete members is generally defined by material characteristics at elevated temperatures and temperature functions. However, the influence of steel reinforcement in concrete members exposed to high temperatures on the ultrasonic pulse velocity (UPV) measurements has still been limited. In this paper, the quality of concrete and steel reinforcement/concrete interface was assessed under high temperatures using UPV measurements. The specimens were classified into four categories: the control tested cubes without rebar; tested cubes with plain and ribbed steel rebars. Tested cubes with dimensions of 100x100x100 mm were cast and cured for 28 days at room temperature (20oC). After drying all specimens at 105oC for 48 hours, these cubes were subjected to four different temperature levels ranging from 150oC to 400oC for 4 hours before being cooled to room temperature. According to the measured values of UPV, the higher the temperature attained in specimens, the greater the following changes occurred in concrete: (i) the degradation within the concrete; (ii) the debonding of steel reinforcements in concrete.https://revue.ummto.dz/index.php/JMES/article/view/3278reinforced concretehigh temperatureultrasonic pulse velocity thermal degradation |
| spellingShingle | Vinh An LE Thi-Thanh Thao NGUYEN Ngoc Tan NGUYEN Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature Journal of Materials and Engineering Structures reinforced concrete high temperature ultrasonic pulse velocity thermal degradation |
| title | Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature |
| title_full | Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature |
| title_fullStr | Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature |
| title_full_unstemmed | Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature |
| title_short | Investigation of Ultrasonic Pulse Velocity Reduction in Reinforced Concrete Members Exposed to High Temperature |
| title_sort | investigation of ultrasonic pulse velocity reduction in reinforced concrete members exposed to high temperature |
| topic | reinforced concrete high temperature ultrasonic pulse velocity thermal degradation |
| url | https://revue.ummto.dz/index.php/JMES/article/view/3278 |
| work_keys_str_mv | AT vinhanle investigationofultrasonicpulsevelocityreductioninreinforcedconcretemembersexposedtohightemperature AT thithanhthaonguyen investigationofultrasonicpulsevelocityreductioninreinforcedconcretemembersexposedtohightemperature AT ngoctannguyen investigationofultrasonicpulsevelocityreductioninreinforcedconcretemembersexposedtohightemperature |