The effect of cement and aggregate type and w/c ratio on the bound water content and neutron shielding efficiency of concretes

• Published in: Construction & building materials Vol. 264; p. 120210
• Main Authors: Prochon, Piotr, Piotrowski, Tomasz
• Format: Journal Article Web Resource
• Language: English
• Published: Elsevier Ltd 20.12.2020; Elsevier
• Subjects: Attenuation factor; Bound water; Engineering, computing & technology; Heavy concrete; Ingénierie, informatique & technologie; Materials science & engineering; Monte Carlo method; Science des matériaux & ingénierie; Shielding concrete; Shielding concrete; Heavy concrete; Monte Carlo method; Attenuation factor; Bound water
• ISSN: 0950-0618; 1879-0526; 1879-0526
• DOI: 10.1016/j.conbuildmat.2020.120210

•Bound water content in concrete varies depending on cement and aggregate type.•Bound water content in concrete is independent from w/c ratio.•No relation between hydrogen input from bound water and neutron shielding was found.•Neutron shielding efficiency can be modified by cement and aggregate change. Modeling studies of the effect of cement type, aggregate type and w/c ratio on the bound water amount and shielding properties against neutron ionising radiation of concretes are presented. The change of cement or aggregate type had an significant influence on the bound water amount and neutron linear attenuation coefficient (NLAC) calculated in Monte Carlo N-Particle Transport Code. The multiple regression analysis for the dependent variable NLAC suggested no correlation between w/c ratio and examined parameter.. Data gained in ionic chamber implies an influence of cement type on the concrete shielding properties.