Case Study on the Repair and Rehablitation of G+3Residential Appartment Located Near Sea Shore, Tamil Nadu, India.

Vijayalakshmi, R.; Ramanagopal, S.; Sathia, R.; Raj, Rohit

doi:10.17485/ijst/2017/v10i26/115874

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Rehabilitation of precast concrete constructed facilities results in economic benefits for the kingdom, and thus be in line with the knowledge based economy, on which the Saudi vision for the year 2030 is based. Recently, many researchers [1][2][3][4][5][6][7][8] the life span of the constructed facilities. The most commonly used repair techniques proposed are: mortar and steel jacketing, ferrocement wire meshes, carbon/glass fiber-reinforced polymers (CFRP/GFRP) jacketing, FRP sheets and high-performance cementitious composites.…”

Section: Introductionmentioning

confidence: 99%

Condition assessment and renovation of an aged precast reinforced concrete multi-storey building

Alshannag

Higazey

2022

IOP Conf. Ser.: Earth Environ. Sci.

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This paper assesses the condition of a 45 years old precast reinforced concrete multistorey building and proposes innovative repair techniques for extending its service life. The residential building investigated consists of six floors, and each floor consists of 4 apartments with a total floor area of 900 m2. Initially, visual inspection was conducted to identify the extent of deterioration in all parts of the building, followed by field non-destructive and destructive tests to determine the root causes of the damage. Moreover, analytical tools such as ETABS and SAFE design softwares were used by applying the same loading assumptions and material properties given by the designer, to check the compliance of the building with the safety requirements specified in ACI 318-14/SBC 304-18 building codes. The field and laboratory checks confirmed the occurrence of considerable degree of deterioration in some elements of the building due to reinforcement corrosion, alkali silica reaction (ASR), salt–scaling and leaching. The analytical checks revealed excessive deflections, due to a design error. Several advanced repair techniques including carbon fiber reinforced polymer sheets (CFRP), and steel jackets were implemented to restore the structural load carrying capacity of the columns and beams that suffered extensive deterioration. The excessive deflections were reduced below the code limit by supporting the deflected slabs using wide flanged I-section steel beams. Moreover, the Repair strategy proposed included, removal of the deteriorated concrete, coating the exposed steel bars with a protective anti-corrosive coating, and cathodic protection of the steel bars followed by injecting high strength cementitious grout.

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Section: Introductionmentioning

confidence: 99%

Condition assessment and renovation of an aged precast reinforced concrete multi-storey building

Alshannag

Higazey

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…They have suggested several repair and strengthening techniques including column jacketing, shotcreting, and anticorrosive coatings for enhancing the life of the structure. Vijayalakshmi, et al, [13] proposed several methods for repairing a G+3 residential apartments located very close to sea shore, Besant Nagar, Tamil Nadu, India. Their repair strategy involved mainly removal of deteriorated concrete, and using polymer modified mortar for repair of RCC and injection of epoxy grout into masonry cracks, setting up a self-sacrificial anode to prevent corrosion of reinforcement, and glass fibre wrapping for columns to increase ductility.…”

Section: Introductionmentioning

confidence: 99%

Strengthening and Repair of a Precast Reinforced Concrete Residential Building

Shannag

Higazey

2020

Civ Eng J

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The deterioration or ageing of the existing infrastructures coupled with increased safety requirements necessitate immediate strengthening. Developing long lasting and cost effective repair techniques and materials continue to capture the attention of concrete professionals worldwide. The main purpose of this investigation was to extend the life span of a multi-storey precast reinforced concrete structure built in Riyadh 40 years ago. The condition assessments relied on analytical tools, visual, field and laboratory experiments for core samples collected from the building. The analytical checks of the building revealed considerable deflections of some slabs because of design error. The field and chemical analysis tests performed, confirmed the occurrence of durability defects as a result of poor workmanship during the construction stage. Several state-of-the-art repair techniques and materials were used for enhancing the service life of the structure at a minimum cost. The Repair strategy implemented included, removal of the deteriorated concrete, pouring a bonding agent on the surface of the damage, followed by injecting high strength cementitious grouts, supporting the deflected slabs using I-section steel beams, using cathodic protection to prevent corrosion, strengthening the columns and beams using carbon fiber reinforced polymer (CFRP) sheets, and steel jackets. Doi: 10.28991/cej-2020-03091630 Full Text: PDF

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Case Study on the Repair and Rehablitation of G+3Residential Appartment Located Near Sea Shore, Tamil Nadu, India.

Cited by 2 publications

References 3 publications

Condition assessment and renovation of an aged precast reinforced concrete multi-storey building

Condition assessment and renovation of an aged precast reinforced concrete multi-storey building

Strengthening and Repair of a Precast Reinforced Concrete Residential Building

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