New generation of lime-based renders with the addition of ultrafine waste material from dolerite quarries

Author(s): Ioannis Rigopoulos, Loucas Kyriakou, Ăkos Török, Theodora Kyratsi, Ioannis Ioannou
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 135-142
Total Pages: 813
Language: English

Abstract: The sustainable use of quarry wastes for the development of environmentally friendly building materials could ameliorate the anthropogenic impact on the environment. This study focuses on traditional lime-based composites, the slow setting/hardening reactions of which are considered as the main burden for their broader application in construction. Here, we present new data about the performance of hydrated lime renders modified by the addition of different amounts (5% and 15% w/w as a replacement of lime) of ultrafine waste material from dolerite quarries. The ball milling process was applied to produce this ultrafine quarry waste. The results reveal that the addition of the latter at 5% w/w results in composites with a denser microstructure due to the nano-filler effect and an enhancement of the carbonation reactions. A further enhancement of the degree of carbonation, in combination with a significant increase of the compressive strength, were observed by increasing the amount of nanoscale waste material from 5% to 15% w/w. The results demonstrate that this approach could result in significant economic benefits for the quarrying and building industries, providing at the same time a measurable carbon offset associated with the production of lime.

Online publication :2019
Publication type : full_text
Public price (Euros) : 00