Capasso Ilaria, D'Angelo Gigliola, Fumo Marina, Del Rio Merino Mercedes, Caputo Domenico, Liguori Barbara
Department of Engineering and Geology, University of Chieti-Pescara "G d'Annunzio", Viale Pindaro 42, 65122 Pescara, Italy.
Department of Civil, Building and Environmental Engineering (DICEA), University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy.
Materials (Basel). 2023 Oct 10;16(20):6619. doi: 10.3390/ma16206619.
Nowadays, the preservation and restoration of a historical building needs to be faced in accordance with a novel sensibility regarding the environment in order to preserve the building for future generations. In this context, the scientific community is focusing on novel and sustainable materials and techniques that allow for durability and mechanical performance as well as compatibility with the existing heritage. Alkali-activated materials represent a great challenge to the production of new materials, starting from the existing ones, with the goal of reducing consumption, emission of greenhouse gases and environmental impact. This study deals with the valorisation of waste materials coming from demolition and construction activities in the manufacture of geocomposites suitable for the restoration and conservation of historical heritage. In particular, waste from tuff sawing and brick grinding were used as raw materials, and then the geopolymeric samples produced were characterized based on a physical-chemical and mechanical point of view in order to investigate their performance and evaluate their suitability as materials for a historical building's recovery. The results showed that brick waste-based geocomposites were more compact than the tuff-based ones, as shown by the higher-density values and the lower values of open porosity and water absorption and as further confirmed by the trend of the mechanical performance. Moreover, experimental data showed that the physical and mechanical properties of both bricks and tuff waste-based geocomposites, even with different waste content, are compatible with existing building materials as well as traditional repairing products.
如今，历史建筑的保护与修复需要以一种关于环境的全新理念来面对，以便为子孙后代保护这些建筑。在这种背景下，科学界正专注于新型且可持续的材料与技术，这些材料与技术要具备耐久性、机械性能以及与现有遗产的兼容性。从现有材料出发，碱激活材料对新型材料的生产构成了巨大挑战，其目标是减少消耗、温室气体排放和环境影响。本研究涉及将拆除和建筑活动产生的废料用于制造适用于历史遗产修复和保护的地质复合材料。具体而言，凝灰岩切割废料和砖块研磨废料被用作原材料，然后从物理化学和力学角度对所制备的地质聚合物样品进行表征，以研究其性能并评估其作为历史建筑修复材料的适用性。结果表明，基于砖块废料的地质复合材料比基于凝灰岩的复合材料更致密，这体现在更高的密度值、更低的开孔率和吸水率上，并且机械性能趋势进一步证实了这一点。此外，实验数据表明，基于砖块和凝灰岩废料的地质复合材料的物理和力学性能，即使废料含量不同，也与现有建筑材料以及传统修复产品兼容。
