• PROF. SUDARSHAN PATIL
• HIMANSHU MANKAR
• RAHUL HIREKAR
• KAUSTUBH KOLTE
• MAYUR WANDLE

In a NDT test we are going to see the compressive strength & material with respect to time. This test it will show that how much time the building will be survive and how much precaution we should take and on which time to repairement should be required. The strength determination inside and existing structure is challenge for civil engineer. Equipment’s which we are going to use that is rebound hammer and ultrasonic pulse velocity which will show all the details inside structure without any distrust or any damage of structure. The first equipment rebound hammer which is simple to use doesn’t require any high skill and give rebound number quickly which helps to get result fast then second equipment is ultrasonic pulse velocity which is also a simple and handy equipment to use but it require to some skill to handle it. And this are the standard test to determine the strength inside the concrete structure. The result which will we get after determining the two structure that is old and new structure which will give us to the strength and quality of material inside or existing building.

Non-destructive testing (NDT), magnetic testing, electric testing, eddy current testing, microwave testing, infrared testing, optical testing, radiographic Ultra sonic testing, penetrant testing.

"DIFFERENCE BETWEEN OLD STRUCTURE AND NEW STRUCTURE ON SAME BUILDING BY NDT TEST", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.659-663, May-2018, Available :http://www.jetir.org/papers/JETIR18IC118.pdf

"DIFFERENCE BETWEEN OLD STRUCTURE AND NEW STRUCTURE ON SAME BUILDING BY NDT TEST", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp659-663, May-2018, Available at : http://www.jetir.org/papers/JETIR18IC118.pdf