RECYCLING AND ITS USE IN CONCRETE WASTE PROCESSING BY HIGH-SPEED MILLING

• Main Authors: Zdeněk Prošek, Pavel Tesárek, Jan Trejbal
• Format: Article
• Language: English
• Published: CTU Central Library 2019-03-01
• Series: Acta Polytechnica CTU Proceedings
• Subjects: micronized old concrete, high-speed mill, cement pastes, mechanical properties
• Online Access: https://ojs.cvut.cz/ojs/index.php/APP/article/view/5461

This article discusses the possibility of recycling of concrete waste using the high-speed milling method. The resulting of milling is micronize old concrete. Used old concrete was created by crushing of old concrete, which served as a structural concrete for the construction of a supporting column. Two level of milling process was used to recycle old concrete. The main use of waste is the possibility of partial replacement of commonly used binder and microfillers in concrete. For this reason, properties as particle size distribution, dynamic modulus of elasticity, flexural strength and compressive strength were observed. The aim is to replace as much cement as possible while maintaining mechanical properties.