Investigation of New Methods of Crack Repair in Concrete Surfaces

Document Type : Education

Author

Lecturer, Department of Civil Engineering, University of Zand, Shiraz, Iran

Abstract

Due to the importance of concrete structures in today's life and the use of concrete at different levels, the repair of damaged parts of concrete surfaces, especially in the cracks section is very important. In repairing cracks, the cause of the crack must first be determined. If the crack is caused by structural factors such as subsidence, shear force, frame displacement, etc., the reasons must first be investigated and then repaired. Cracks caused by it, but if the cracks are caused by non-structural and surface factors, it is easier to fix the defects. In repairing deep cracks, it is necessary to inject appropriate restorative materials into the cracks, which requires effort and It has high accuracy. Crack repair includes steps such as cleaning the inside of the crack from debris, installing special hose heads to inject restorative materials, creating a cover layer for deep cracks, injecting restorative materials with pressure and sometimes with the help of a device, removing the cover layer and removing headgear and Finally, the final leveling of the repaired surfaces is smooth and uniform. Restorative materials can include a variety of epoxy materials, concrete adhesives, cement mortar, grout, etc.

Keywords

References

[1]- ACI Committee 224, 1993, Causes, Evaluation, and Repairs of Cracks in Concrete Structures (224.1R-93), American Concrete Institute, Farmington Hills,Mich., 22 pp.
[2]- بولتن فنی اداره کل نگهداری راه و ابنیه شماره 1-3-94 وزارت راه و شهرسازی برگرفته از کمیته E706 انیستیتو بتن آمریکا ترجمه رضا امیر پور و رضا اکبری 1394.
[3]-ACI Committee 503, 1998, Use of Epoxy Compounds with Concrete (ACI 503R-93 (Reapproved 1998)),American Concrete Institute, Farmington Hills, Mich.28 pp.
[4]- کتاب راهنمای کاربردی « عیب یابی و ترمیم ترک در ساختمان » تالیف MALCOLM HOLLAND و ترجمه مهندس علیرضا صالحین و مهندس رضا عسکری اصل ، ناشر فرهمند 1394.  
New Approaches in Civil Engineering
Volume 4, Issue 1
June 2020
Pages 44-53

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