Size effects on the mechanical behavior and the compressive failure strength of concrete: an extensive dataset

Abstract

This data article provides a series of 492 stress-strain curves and compressive strength values obtained under the uniaxial compression of concrete samples fabricated from three different normal-weight concrete mixtures with four different cylindrical sample sizes ranging from 40 × 80 mm to 160 × 320 mm. These data are related to two research articles: “Revisiting statistical size effects on compressive failure of heterogeneous materials, with a special focus on concrete” (Vu et al., 2018) [1] and “Revisiting the concept of characteristic compressive strength of concrete” (Vu et al., 2020) [2] . In those papers, the strength values were used to (i) analyze and interpret statistical size effects on compressive strength of concrete (in ref. [1] ), and (ii) discuss and evaluate the genuine characteristic compressive strength of concrete when size effects on strength are taken into account (in ref. [2] ). This dataset could be reused for other statistical analyses on the mechanical behavior of concrete (e.g. elastic and strength properties) and associated possible mixture or size effects. In addition, the characteristic properties of the hardened concrete samples such as the apparent density, the moisture content, the modulus of elasticity as well as the internal microstructures are also provided.

Prediction of Concrete Peak Load and Compressive Failure Strength Using Machine Learning

“…This work was carried out on the basis of an experimental data set of 527 compression tests obtained from the work of Vu et al [1,2,4]. Four sizes of cylindrical specimens were considered (cf.…”

“…Concrete is the material most widely used in the field of civil engineering field and in the construction industry [1][2][3]. Concrete compression strength and associated peak load are two important basic required properties [1,4].…”

“…Concrete is the material most widely used in the field of civil engineering field and in the construction industry [1][2][3]. Concrete compression strength and associated peak load are two important basic required properties [1,4]. Among the input parameters of concrete production, there is no linear relation that can predict peak load or the compressive failure strength of concrete strengths [5,6].…”

The potential impact of size effects on compressive strength for the estimation of the Young’s modulus of concrete

“…In this work, two load-controlled compression machines (of different stiffness and loading capacity) were used because the concrete samples were of different sizes. These two machines were calibrated and certified by the French Accreditation Committee (COFRAC) [62] and their specific properties conformed to the requirements in the regulation NF EN 12390-4 [63].…”

“…In other words, from this calibration test, the elastic deformation of the compression machine (Δ 𝑓𝑟 ) was calculated at any applied load and then used to correct the true displacement corresponding to the deformation of the concrete sample (Δ 𝑠𝑝 ). The details of these calibration tests have been presented elsewhere [62].…”