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 178
- Downloads 0
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...
HARD EXUDATE DETECTION IN RETINAL IMAGES USING STATISTICAL PARAMETERS
Diabetic retinopathy (DR) is a major cause of blindness. Exudates are one of the primary signs of diabetic retinopathy, which is a main cause of blindness and can be prevented with an early screening process. Early detec...
WEAR ANALYSIS OF COMPOSITE MATERIAL MADE BY BLENDING OF NATURALLY AVAILABLE COCONUT SHELL POWDER (CSP)
The Aim of the study is to develop a natural, eco-friendly brake pad materials. Coconut shell powder which is one of the naturally available material with outstanding potential in brake pads. Coconut shell powder (CSP) h...
IF THIS HAPPENS – CAN WE SURVIVE?
Planet Earth is a highly dynamic, marked by numerous events. Meteorologists present the data, that the planet every day gets hit more than eight million times by lightning strike. Often electrical discharge of assorted b...
INDEPENDENT STUDY: GEOGRAPHIC INFORMATION DATABASE SYSTEM
This paper goes over an independent study that focuses primarily on Geographical Information Database System (GIS) with focus on backend design and implementation as well as the way of thinking behind GIS and how it diff...