DOIONLINE

DOIONLINE NO - IJAMCE-IRAJ-DOIONLINE-5391

Publish In
International Journal of Advances in Mechanical and Civil Engineering (IJAMCE)-IJAMCE
Journal Home
Volume Issue
Issue
Volume-3,Issue-4  ( Aug, 2016 )
Paper Title
Structural Performance of Impact-Damaged Reinforced Concrete Beams After Patch Repair With SBR Polymer-Modified Cementitious Mortar
Author Name
Arazi Idrus, Syed Ahmad Farhan, Chin Siew Choo, Neza Ismail
Affilition
National Defence University of Malaysia, Kuala Lumpur, Malaysia University of Technology PETRONAS, Bandar Seri Iskandar, Perak, Malaysia.
Pages
51-55
Abstract
This study evaluates structural integrities of impact-damaged reinforced concrete beams after patch repairs with SBR polymer-modified cementitious mortars. Eight reinforced concrete beams 1300 mm in length, 150 mm in depth and 100 mm in width were cast. Six of the eight beams were impact-damaged while the remaining two beams were undamaged and served as control samples. To subject the beams to impact damage, a 55-kg mass steel billet was raised to a height of 3.3 m and dropped from a movable steel scaffolding onto the midspan of the beams, which was supported on a steel I-beam 250- mm deep. The height was determined by conducting a series of trials on two of the beams in order to give a reasonable damage. From the four damaged beams, two beams were repaired with SBR polymer-modified cementitious mortars while the remaining two were left unrepaired. All repaired, unrepaired and control beams were then tested to failure in a four-point bend test over a span of 1200 mm to obtain parameters for evaluation of their structural integrities. Results showed that impact-damaged beams can be successfully repaired by patching with SBR polymer-modified cementitious mortars. Index Terms- Impact damage; reinforced concrete; polymer modified mortars
  View Paper