INTRODUCTION

1. Salalah College Of Technology ENGINEERING DEPARTMENT CIVIL AND ARCHITECTURAL ENGINERING SECTION semester 3 / Academic year 2017-2018 CECE2250 / Final year project Title : Post – Analysis of BUSINESS BUILDING in Salalah College of Technology using Non- Destructive test of concrete

2. INTRODUCTION • The most common test for hardened concrete is the compressive strength, at a particular period of time, from the time of casting the concrete cubes. It is very important for engineers and technicians to obtain accurate results of compressive strengths of concrete. Compressive strength over a period of time also indicates the extent of quality control being exercised at the site. • This paper covers, briefly, the purpose of compressive strength of concrete test cubes, parameters, which can affect the compression strength of concrete, also some basic and advanced apparatus required for the test and the precautions for the test. It also discusses different types of cube failure that can occur.

3. Non Destructive non-destructive testing (NDT) is a wide group of analysis techniques used in science and technology industry to evaluate the properties of a material, component or system without causing damage.[1]The terms nondestructive examination (NDE), nondestructive inspection (NDI), and nondestructive evaluation (NDE) are also commonly used to describe this technology.BecauseNDT does not permanently alter the article being inspected, it is a highly valuable technique that can save both money and time in product evaluation, troubleshooting, and research. The six most frequently used NDT methods are eddy-current, magnetic-particle, liquid penetrant, radiographic, ultrasonic, and visual testing

4. Destructive Test In destructive testing (or destructive physical analysis, DPA) tests are carried out to the specimen's failure, in order to understand a specimen's performance or material behavior under different loads.In destructive testing tests are carried out to the point of specimens failure, in order to understand the specimens performance or material behavior under different loads. Advantage of destructive testing is accuracy of results.

5. Rebound hammer test When the plunger of the rebound hammer is pressed against the surface of the concrete, the pring-controlled mass rebounds and the extent of such a rebound depends upon the surface hardness of the concrete.

6. Ultrasonic pulse velocity test An ultrasonic pulse velocity test is an in-situ, nondestructive test to check the quality of concrete and natural rocks.

7. Compression test concrete A compression test is any test in which a material experiences opposing forces that push inward upon the specimen from opposite sides or is otherwise compressed, “squashed”, crushed, or flattened.

9. Photos of Testing

11. Gantt Chart of activities

13. References: 1. IS: 516 -1959 ‘METHODS OF TESTS FOR STRENGTH OF CONCRETE ‘Bureau of Indian Standards, New Delhi, 2007. 2. IS456: 2000, Code of practice for Plain and Reinforced Concrete, Bureau of Indian Standards, New Delhi, 20073. ‘ www.http://www.azom.com/article.aspx ?ArticleID=5550 ’4. National ready mix concrete association ‘ www.https://www.nrmca.org/aboutconcrete/cips/35p.pdfn ’5. www.https://en.wikipedia.org/wiki/Compressive_strength ’6. Shetty M.S. “Concrete technology” https://www.engineeringcivil.com/compression-test-on-concrete.html http://www.acivilengineer.com/2013/05/procedure-of-concrete-compression-test.html