This report, submitted by a student for ENGIN3001, explores the critical influence of specimen size and shape on the compressive strength of concrete. The literature review delves into the standard testing procedures, focusing on the use of cylinders and cubes, and highlights the differences in their dimensions and preparation methods. It discusses the factors affecting test results, including curing conditions, load application rates, and the 'wall effect' caused by aggregate distribution. The report examines various research findings, including the size effect law and the weakest link theory, and presents experimental analyses such as Vebe and Slump tests for fresh concrete and hardened density tests. It also explores the impact of mix design ratios, aggregate grading, and the conversion factors used to correlate the compressive strength results of different specimen shapes. The report concludes by analyzing the experimental results and discusses the implications of specimen geometry on concrete strength.
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