AN APPRAISAL OF SANDCRETE BLOCKS QUALITY A CASE STUDY OF KATSINA, NIGERIA
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL AND STRUCTURAL ENGINEERING
Author(s): HAMISU B. IMAM , MOHAMMAD S. YUSUF
Abstract: Part of Katsina city in Northern Nigeria experienced serious building collapse during the previous and current rainy season. The collapsed buildings turned into heap of rubbles which can hardly be used as hardcore. This study assessed the quality of sandcrete blocks manufactured by block industries in Katsina city where sample of blocks from various block-making industries were collected in the study area. Water absorption ratio was determined prior to the determination of the compressive strength of individual blocks. The values of water absorption ratio for samples D1, H1 and H2 are above the maximum water absorption of 12% recommended in the Nigerian Industrial Standard. The result of the compressive strength indicates that none of the block-making industry in Katsina city conforms to the NIS minimum 2.5 N/mm2 standard for strength characteristic. All stake holders should put hands together to salvage the hopeless situation in the block-making industries in Nigeria.
- Publication Date: 14-Dec-2014
- DOI: 10.15224/978-1-63248-035-4-77
- Views: 0
- Downloads: 0
BEHAVIOR OF CASTELLATED BEAM COLUMN DUE TO CYCLIC LOADS
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN CIVIL AND STRUCTURAL ENGINEERING
Author(s): DJAMALUDDIN RUDY , MARA JUNUS , PARUNG HERMAN , TANIJAYA JONIE
Abstract: The purpose of this study was to determine the behavior of castella beams reinforced with concrete due to cyclic loading, so that the beam can be used as a structural element for receiving seismic load. Test beam consists of beam castella fabricated from normal beam (CB), castella beams with concrete filler between the flange (CCB) and normal beam (NB) as a comparison. Results showed castella beam (CB) has the advantage to increase the flexural capacity and energy absorption respectively 100.5% and 74.3%. Besides advantages, castella beam has the disadvantage that lowering partial ductility and full ductility respectively 12.6 % and 18.1%, decrease resistance ratio 29.5 % and accelerate the degradation rate of stiffness ratio 31.4%. By the concrete filler between the beam flange to improve the ability of castella beam, then the beam castella have the ability to increase the flexural capacity of 184.78 %, 217.1% increase energy absorption, increase ductility partial and full ductility r
- Publication Date: 14-Dec-2014
- DOI: 10.15224/978-1-63248-035-4-78
- Views: 0
- Downloads: 0