Monitoring of strain induced by heat of hydration, cyclic and dynamic loads in concrete structures using fiber-optics sensors

Yehia, Sherif; Landolsi, Taha; Hassan, Mohamed S.; Hallal, Mohammad

doi:10.1016/j.measurement.2014.02.030

Cited by 15 publications

(6 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the last few decades the use of optical fiber sensors (OFS) to monitor physical parameters of structures in the civil engineering field has been widely employed. For instance, the application of OFS to monitor properties such as the curvature and deflection of bridges [ 36 , 37 , 38 , 39 ], the onset of cracking [ 40 , 41 , 42 ], and temperature [ 43 , 44 ] has been consistently reported. Nevertheless, besides physical properties, other parameters such as pH level [ 45 , 46 ], relative humidity [ 47 , 48 , 49 ], chloride content [ 50 , 51 , 52 ], and alkali-silica reactions (ASR) [ 53 ] are also responsible for earlier failure of civil engineering structures.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

et al. 2020

View full text Add to dashboard Cite

This manuscript describes the synthesis and characterization of five new organic–inorganic hybrid (OIH) sol-gel materials that were obtained from a functionalized siloxane 3-glycidoxypropyltrimethoxysilane (GPTMS) by the reaction with the new Jeffamine®, namely three different diamines, i.e., EDR-148, RFD-270, and THF-170, a secondary diamine, i.e., SD-2001, and a triamine, i.e., T-403. The OIH sol-gel materials were characterized by UV-visible absorption spectrophotometry, steady-state photoluminescence spectroscopy, and electrochemical impedance spectroscopy. The reported OIH sol-gel materials showed that, with the exception of the samples prepared with Jeffamine® SD-2001, the transmittance values ranged between 61% and 79%. Regarding the capacitance data, the values reported changed between 0.008 and 0.013 nF cm−2. Due to their optical and electrical properties these new OIH materials show promising properties for applications as support films in an optical sensor area such as fiber sensor devices. Studies to assess the chemical stability of the OIH materials in contact with cement pastes after 7, 14, and 28 days were also performed. The samples prepared with THF–170 and GPTMS, when compared to the samples prepared with RFD-270 and T-403, exhibited improved behavior in the cement paste (alkaline environment), showing promising properties for application as support film in optical fiber sensors in the civil engineering field.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The work developed by Yehia et al [ 33 ] used optical fibers to measure strains due to physical changes, such as heat of hydration, as well as strains due to cyclical and torsional loads. Concrete cylinders of 15 × 30 cm 2 and beams of 175 cm in length and with a cross section of 35 × 55 cm 2 were used.…”

Section: Overview Of Health Monitoring Of Concrete Structures Using Fosmentioning

confidence: 99%

On the Use of Embedded Fiber Optic Sensors for Measuring Early-Age Strains in Concrete

Silva

Tahlaiti

et al. 2021

Sensors

View full text Add to dashboard Cite

Detailed information about concrete behavior in real structures is an important issue in controlling its performance during its service life, and the use of embedded sensors to obtain desired information such as temperature, onset of the cracking process and evolution of strains, has gained the attention of the building concrete industry. Data obtained using this technology can provide valuable information for decision making about the need for corrective interventions that can ensure the integrity and safety of concrete structures for long period of time. This paper presents a review of the current state-of-the-art of embedded fiber optic sensors used to assess concrete information of a wide range of aspects, comprising: existing alternative technologies, characteristics and advantages, practical applications and future developments. Complementarily, the work presents preliminary results of the use of fiber optic sensors to automatically and continuously perform expansion readings of AAR in concrete elements that facilitate both the storage—with elimination of the usual interruptions for manual readings—and the availability of continuous results of expansion data that are not possible to obtain with usual AAR tests code reading recommendations.

show abstract

“…Monitoring of structures is mainly carried out by piezoelectric [74][75][76], strain [77,78], and OFS sensors [79][80][81][82]. The OFS are based on interferometric principles (Fabry-Perot and MZI) and optical (Bragg Fibers) or stimulated (Brillouin) dispersion principles [83,84].…”

Section: Ofs For Durability Monitoring Of Concrete and Reinforced Structuresmentioning

confidence: 99%

Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

et al. 2021

View full text Add to dashboard Cite

The use of advanced sensing devices for concrete and reinforced concrete structures (RCS) is considered a rational approach for the assessment of repair options and scheduling of inspection and maintenance strategies. The immediate benefits are cost reduction and a reliable prevention of unpredictable events. The use of optical fiber sensors (OFS) for such purposes has increased considerably in the last few years due to their intrinsic advantages. In most of the OFS, the chemical transducer consists of immobilized chemical reagents placed in the sensing region of the optical sensor by direct deposition or by encapsulation in a polymeric matrix. The choice of the support matrix impacts directly on the performance of the OFS. In the last two decades, the development of OFS functionalized with organic–inorganic hybrid (OIH) sol–gel membranes have been reported. Sol–gel route is considered a simple method that offers several advantages when compared to traditional synthesis processes, allowing to obtain versatile materials with unique chemical and physical properties, and is particularly valuable in the design of OIH materials. This review will provide an update of the current state-of-the-art of the OFS based on OIH sol-gel materials for concrete and RCS since 2016 until mid-2021. The main achievements in the synthesis of OIH membranes for deposition on OFS will be discussed. The challenges and future directions in this field will also be considered, as well as the main limitations of OFS for RCS monitoring.

show abstract

Monitoring of strain induced by heat of hydration, cyclic and dynamic loads in concrete structures using fiber-optics sensors

Cited by 15 publications

References 42 publications

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

Synthesis, Optical and Electrical Characterization of Amino-alcohol Based Sol-gel Hybrid Materials

On the Use of Embedded Fiber Optic Sensors for Measuring Early-Age Strains in Concrete

Sol-Gel Coating Membranes for Optical Fiber Sensors for Concrete Structures Monitoring

Contact Info

Product

Resources

About