Department of Civil Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chengalpattu, Tamil Nadu, 603203, India.
Department of Civil Engineering, K.Ramakrishnan College of Technology, Samayapuram, Tiruchirappalli, Tamil Nadu, 621112, India.
Environ Sci Pollut Res Int. 2023 Oct;30(49):107533-107548. doi: 10.1007/s11356-023-29933-4. Epub 2023 Sep 22.
This study explores the utilization of polyethylene bags and PET bottles as a fiber in the production of lightweight non-autoclaved plastic fiber-reinforced aerated concrete (NAPFRAC), which has the potential to replace conventional bricks. The study begins by examining global plastic pollutant production and their characterization and the need for a forecast of plastic pollution worldwide. Optimization using Design-Expert 9.0 is used to estimate the optimum mix of NAPFRAC. The mechanical properties of the optimum mix are determined, and a scaled-down model of wall panels is cast to study their behavior and vertical and horizontal ultimate load-carrying capacity. The results are compared to those of conventional first-class burnt clay bricks, and it is found that NAPFRAC wall panels show a 28% increase in vertical load-carrying capacity and 40% in horizontal load-carrying capacity. An analytical study of a high-rise building with NAPFRAC as infill panels is carried out to check the reduction of steel reinforcement in structural sections. Microstructural analysis using SEM (scanning electron microscopy) and XRD (X-ray diffraction) is conducted to identify the morphology and mineralogical composition of the NAPFRAC. Energy studies are also carried out on the mix ratio to identify the embodied carbon dioxide and energy required. Overall, this study highlights the potential of NAPFRAC as a lightweight alternative to conventional bricks. The use of plastic waste as a fiber in concrete production could have a positive impact on the environment by reducing plastic pollution. The results of this study could also have practical applications in the construction industry, especially in the design of high-rise buildings.
本研究探讨了将聚乙烯袋和 PET 瓶用作纤维，生产轻质非蒸压塑料纤维增强加气混凝土（NAPFRAC）的方法，这种方法有可能替代传统砖块。本研究首先考察了全球塑料污染物的产生及其特征，以及对全球塑料污染进行预测的必要性。使用 Design-Expert 9.0 进行优化，以估算 NAPFRAC 的最佳混合比。确定了最佳混合比的机械性能，并铸造了一个缩小比例的墙板模型，以研究其行为和垂直和水平极限承载能力。将结果与传统的一等烧结粘土砖进行了比较，发现 NAPFRAC 墙板的垂直承载能力提高了 28%，水平承载能力提高了 40%。对采用 NAPFRAC 作为填充板的高层建筑进行了分析研究，以检查结构部分钢筋的减少情况。使用 SEM（扫描电子显微镜）和 XRD（X 射线衍射）进行微观结构分析，以确定 NAPFRAC 的形态和矿物组成。还对混合比进行了能量研究，以确定所包含的二氧化碳和所需的能量。总的来说，本研究强调了 NAPFRAC 作为传统砖块的轻质替代品的潜力。将塑料废物用作混凝土生产中的纤维可以通过减少塑料污染对环境产生积极影响。本研究的结果也可能在建筑行业中具有实际应用价值，特别是在高层建筑的设计中。
