Concentrically Loaded Square Steel Plates Bearing on Plain Concrete Blocks Containing Fly Ash

14th International Conference on Concrete Engineering and Technology

Md Zain, Mohd Raizamzamani^1 ; Yahya, Norrul Azmi^1 ; Wee, Lee Siong^1 ; Lian, Oh Chai^1

Faculty of Civil Engineering, Universiti Teknologi MARA, Selangor, Shah Alam, Malaysia^1

关键词: Bearing loads;    Bearing strengths;    Cement replacement;    Compressive loading;    Conventional concrete;    Experimental investigations;    Experimental testing;    Failure patterns;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/431/6/062011/pdf
DOI  :  10.1088/1757-899X/431/6/062011

来源: IOP

【 摘 要 】

This paper presents an experimental investigation into the bearing strength of concrete blocks containing fly ash under axially compressive loading. Fly ash can be used with the conventional concrete to produce concrete blocks having an extensive range of performance behaviours. Then, the main purpose of this study is to inspect the ultimate bearing strength and observe the failure modes of concrete blocks containing fly ash. A total of twelve (12) numbers of specimens with four different types of concrete blocks were experimentally investigated. There are three (3) specimens of plain concrete blocks, three (3) specimens of concrete blocks containing 20% of fly ash, three (3) specimens of concrete blocks containing 30% of fly ash and three (3) specimens of concrete blocks containing 40% of fly ash as cement replacements. The use of square steel plate helps in determining the bearing strength when concentrically loaded on top of the specimen. The results of the experimental testing herein were compared with the bearing values calculated based on previous researches. Experimental results indicate that concrete blocks containing 30% of fly ash as cement replacements gave higher value of bearing strength compared with other specimens. Meanwhile, the failure pattern of concrete blocks under the bearing load was found to vary with the increase in the fly ash percentage.