Core Sampling for Fiber Concrete Constructions – Context Between Quantity of Core Samples and Evaluation of Fiber Concrete Characteristics

This article is focused on diagnostic methodology for steel fibre concrete slab-on-ground constructions. The number of excepted core samples from construction affected economical, quality and labour intensity aspects of implemented construction diagnostic. Essentially for the quality of diagnostic results is the sample quantity. The described research investigated the influence of core sample quantity to the accuracy and precision of diagnostic results. For this research, a large collection of core samples were taken from real steel fibre concrete construction - parking pavement. The studied material characteristic was the compressive strength. Core samples were sorted to sets with different quantity. Compressive strength of each sample was recalculated to cubés compressive strength and was statistically evaluated.