The Effect of Insufficient Cover Thickness on Structural Performance of Reinforced Concrete Buildings

Işık, Ercan; Harirchian, Ehsan; Bilgin, Hüseyin; Kaya, Berfin; Karaşin, İbrahim Baran

doi:10.1007/978-3-030-92851-3_20

Cited by 5 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For structural members such as reinforced rebars embedded in mortar, the thickness of the mortar starting from the top section of the embedded structural member to the surface of the cementitious structure is crucial. If the mortar covering is not thick enough, it cannot last over the expected lifetime of a cementitious structure due to cracking along the embedded structural member, neutralization, and corrosion of the member [30].…”

Section: Methodsmentioning

confidence: 99%

Effect of Embedded Depth of Copper-Nickel-Plated Sensor Probes on Compressive Strength Development of Mortar

et al. 2023

View full text Add to dashboard Cite

Embedded sensors are widely employed for the structural health monitoring of structures constructed with concrete or mortar. Despite embedded sensors being actively used, there has been no study on whether or not the sensor probe placement within structures made of concrete or mortar influences their structural stability. The strength of small structures in particular could be affected by sensor probes embedded within them. To address the lack of research in this area, this study analyzed the effect of embedding positions of sensor probes on the compressive strength development of mortar. After the production of mortar specimens with the depth of the embedded sensor being controlled by the developed mold, compressive strength tests were conducted, and then test results were verified through finite element analysis. For testing, copper–nickel-plated sensor probes were embedded within the mortar because these sensor probes are popular commercial probes. The test results show that the compressive strength was 7.1 MPa when the sensor probe was embedded at a depth of 5 mm. In contrast, the compressive strength was 28.2 MPa at a depth of 30 mm. Since the compressive strength without the embedded sensor probe was 29.8 MPa, considering the results of this study, it is highly recommended that copper–nickel-plated sensor probes be embedded at least 30 mm from the surface of mortar structures.

show abstract

Section: Methodsmentioning

confidence: 99%

Effect of Embedded Depth of Copper-Nickel-Plated Sensor Probes on Compressive Strength Development of Mortar

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The concrete cover is an important detail that protects the reinforcement from external effects and should be built as a part of the reinforced concrete. However, too little concrete cover, due to poor workmanship, is then covered with plaster [61]. As a result of this, with elements that cannot provide sufficient adherence between concrete and reinforcement, the concrete cover spills, and the structural element is damaged.…”

Section: Damage Due To Inadequate Concrete Cover and Adherencementioning

confidence: 99%

Field Reconnaissance and Earthquake Vulnerability of the RC Buildings in Adıyaman during 2023 Türkiye Earthquakes

Işık,

Avcil,

İzol

et al. 2024

Applied Sciences

Self Cite

View full text Add to dashboard Cite

The 6th February 2023 Pazarcık and Elbistan earthquakes (Mw = 7.7 and Mw = 7.6) caused great destruction in many cities and were the disaster of the century for Türkiye. The greatest destruction was caused in the provinces of Hatay, Kahramanmaraş, and Adıyaman during these earthquakes, which were independent of each other and occurred on the same day. Information about earthquakes and strong ground motion records is given within the scope of this study. Reinforced concrete (RC) structures which constitute a large part of the urban building stock in the earthquake region were exposed to structural damage at different levels. The structural damage in the RC structures in the city center, Gölbaşı, and Kahta districts of the province of Adıyaman was evaluated within the scope of earthquake and civil engineering after field investigations. Insufficient RC, low-strength concrete reinforcement problems, RC frame failure, heavy overhang, short columns, soft story, and pounding effect are the main causes of the earthquake damage. The presence of these factors that reduce the earthquake resistance of RC structures increased the damage level. In addition, the fact that the earthquakes occurred nine hours apart and the continuation of aftershocks during that period negatively affected the damage levels. It has been observed that structures that receive the necessary engineering services during the construction and project phases ensure the safety of life and property, even if the structure is slightly damaged. In this study, we also tried to reveal whether the target displacements were satisfactorily represented by numerical analysis for a sample RC structure.

show abstract

“…The durability of reinforced concrete beams has been studied by many authors [17][18][19][20][21][22][23][24][25][26]. Li et al [17] investigated the mechanical performance of reinforced concrete beams under simultaneous loading and corrosion and experimental results showed that the ultimate load capacity and deformation capacity of the beams significantly decreased with corrosion cycles at higher sustained load levels.…”

Section: Introductionmentioning

confidence: 99%

“…Yalciner et al [21] developed an empirical model to predict the structural behavior of corroded RC columns based on the experimental results of full-size RC columns. Işık et al [22] studied the effect of different concrete cover thicknesses on the performance of building structures and proposed solutions for the corrosion of reinforcement. Ansari et al [23] proposed a new method to improve the carbonation resistance of calcium sulfate aluminate cements, which led to further improvement in the durability performance of concrete.…”

Section: Introductionmentioning

confidence: 99%

Flexural Performance of Steel Bar Reinforced Sea Sand Concrete Beams Exposed to Tidal Environment

et al. 2022

View full text Add to dashboard Cite

The advancement of marine engineering has brought close attention to the durability of concrete structures. In order to investigate the time-varying performance of reinforced concrete beams in a marine environment and to better apply sea sand directly in marine engineering, this paper describes tests and analysis on the flexural performance of reinforced sea sand concrete beams after being exposed to a tidal environment. Eight beams were tested using four-point static loading equipment. The variation parameters included the type of mixing water, longitudinal reinforcement rate, sea sand replacement rate and duration of service. The force damage process and damage pattern were observed. The load–maximum width crack curve and load–deflection curve were obtained. The effects of each variation parameter on the mechanical properties such as ultimate bearing capacity, initial rigidity, energy dissipation coefficient and ductility coefficient were analyzed. The test results show that compared with the specimens exposed to the tidal environment for 90 days, the peak load of the specimens decreased by 5.6%, the initial rigidity decreased by 60.9% and the ductility coefficient decreased by 41% after 270 days of exposure, while the peak deflection and energy dissipation indexes first increased and then decreased. The seawater mixing can enhance the peak load and cracking load of the specimens, but the initial rigidity, peak deflection, energy dissipation coefficient and ductility coefficient of the specimens are reduced to some extent. The initial rigidity of the specimens tended to increase with the increase in the sea sand replacement, but the peak load decreased. Under the same reinforcement rate, reducing the diameter of the reinforcement is beneficial to improve the initial rigidity of the specimen, while using the reinforcement with higher elongation can effectively enhance the peak deflection of the specimen. Based on the Chinese code, the calculation method of flexural bearing capacity with modified concrete strength is proposed, and the calculation results are in good agreement with the test results.

show abstract

The Effect of Insufficient Cover Thickness on Structural Performance of Reinforced Concrete Buildings

Cited by 5 publications

References 30 publications

Effect of Embedded Depth of Copper-Nickel-Plated Sensor Probes on Compressive Strength Development of Mortar

Effect of Embedded Depth of Copper-Nickel-Plated Sensor Probes on Compressive Strength Development of Mortar

Field Reconnaissance and Earthquake Vulnerability of the RC Buildings in Adıyaman during 2023 Türkiye Earthquakes

Flexural Performance of Steel Bar Reinforced Sea Sand Concrete Beams Exposed to Tidal Environment

Contact Info

Product

Resources

About