Lavagna Luca, Nisticò Roberto, Sarasso Matteo, Pavese Matteo
Polytechnic of Torino, Department of Applied Science and Technology DISAT, C.so Duca degli Abruzzi 24, 10129 Torino, Italy.
Materials (Basel). 2020 Mar 9;13(5):1234. doi: 10.3390/ma13051234.
Since waste tires constitute a serious environmental concern, several studies are devoted to the use of finely divided recycled rubber for the production of rubberized concrete by partial substitution of the mineral aggregate fraction. The introduction of rubber into concrete presents several advantages (e.g., improvement of toughness and thermal/electrical/acoustic insulation capacities). Unfortunately, the addition of a high content of rubber into concrete causes an important loss of mechanical resistance of the final composite. In this context, several scientific studies are devoted to investigate the best technical solutions for favoring the interfacial adhesion between rubber and cement paste, but the interpretation of the literature is often misleading. To overcome this issue, the metadata extrapolated from the single scientific works were critically re-analyzed, forming reference diagrams where the variability fields of the different rubber concrete formulations (in terms of mechanical responses as a function of the rubber content) were defined and the best performances discussed. This study evidenced the twofold role of reference diagrams, able in both presenting the data in an unambiguous manner (for a successful comparison) and providing the guidelines for future works in this research field.
由于废旧轮胎构成了严重的环境问题，因此有多项研究致力于通过部分替代矿物骨料来使用细分的再生橡胶生产橡胶混凝土。将橡胶引入混凝土具有诸多优点（例如，提高韧性以及热/电/声绝缘能力）。不幸的是，向混凝土中添加高含量橡胶会导致最终复合材料的机械强度大幅损失。在此背景下，多项科学研究致力于探寻促进橡胶与水泥浆体之间界面粘结的最佳技术方案，但对文献的解读往往具有误导性。为克服这一问题，对从各项科学研究中推断出的元数据进行了批判性重新分析，绘制了参考图表，其中定义了不同橡胶混凝土配方的变异性范围（就机械响应作为橡胶含量的函数而言）并讨论了最佳性能。本研究证明了参考图表的双重作用，既能以明确的方式呈现数据（以便成功进行比较），又能为该研究领域的未来工作提供指导方针。
