NDT OF RC BEAMS WITH OLD CONCRETE AS PARTIAL REPLACEMENT OF NATURAL COARSE AGGREGATES BY REBOUND HAMMER
Journal Title: World Journal of Engineering Research and Technology - Year 2018, Vol 4, Issue 3
Abstract
Need of residential and commercial space particularly in city centers around the world is growing every day. Therefore, pace of construction of high rise buildings is increasing at faster rate. Space constraints require demolishing of short height buildings to erect high rise buildings. This leads to huge quantum of demolishing waste. One way of treating this waste is to use it in new construction. Strength evaluation of concrete is the key parameter to ensure the quality of concrete. Destructive testing for evaluation of concrete strength is time consuming. Nondestructive testing on other hand provides easy and economical solution to the problem. Therefore, this research paper presents nondestructive testing of reinforced concrete beams made with 50% replacement of natural coarse aggregates with coarse aggregates from old concrete by rebound hammer test method. 96 reinforced concrete beams are cast and tested. The compressive strength obtained from rebound hammer test is then converted into flexural strength using ACI formulation. Comparison of obtained results with results of control specimen shows reliability of nondestructive testing for beams made with old concrete as partial replacement of coarse aggregates.
Authors and Affiliations
Mahboob Oad
Keywords
Related Articles
- EP ID EP662284
- DOI -
- Views 173
- Downloads 0
A NOVEL APPROACH FOR ERROR CORRECTION USING SELECTIVE ENCODING WITH MODIFIED LOW DENSITY PARITY CHECK CODES OVER GALOIS FIELD GF (2M)
During transmission of data over a noisy channel, the data gets corrupted due to noise. This erroneous data can be corrected using Forward Error Correcting Codes without a request for re-transmission of data. Forward Err...
SEPARATE LANE FOR TRICYCLE INTRA-URBAN TRAFFIC: A PLANNING STRATEGY FOR URBAN TRANSPORTATION SYSTEM IN NIGERIAN CITIES
In Nigerian cities today, increase in population, unemployment and the absence of adequate transport infrastructural system in the metropolis has brought about an upsurge in the use of commercial tricycle for public tran...
TOTAL PRODUCTIVE MAINTENANCE-AN IMPORTANT STRATEGY OF MAINTENANCE MANAGEMENT
The aim of this article is to present the systematic literature review on TPM methodology. The various concepts related to this approach, case studies performed in different organizations and surveys performed by differe...
MODIFICATION AND DEVELOPMENT OF A MANUALLY OPERATED AND MOTORIZED MELON SEED SHELLING/SEPARATING MACHINE
Melon shelling and separating/cleaning is usually done manually by hand in most part of the world. However, this method used to be time consuming and strenuous. To address such challenges, a machine for shelling the melo...
APPLICATION OF BOX-BEHNKEN DESIGN FOR THE OPTIMIZATION OF STEAM TURBINE EFFICIENCY
In order to contribute to the development of a steam turbine locally, a ten (10) megawatt steam turbine was designed for power generation. MATLAB was used to develop simulation program for a two stage turbine with re-hea...