Marczyk Joanna, Ziejewska Celina, Korniejenko Kinga, Łach Michał, Marzec Witold, Góra Mateusz, Dziura Paweł, Sprince Andina, Szechyńska-Hebda Magdalena, Hebda Marek
Faculty of Materials Engineering and Physics, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
Centrum Ekologicznego Budownictwa Mieszkaniowego 3 Sp. z o.o., Henryka Sienkiewicza 19/4, 40-031 Katowice, Poland.
Materials (Basel). 2022 Sep 3;15(17):6132. doi: 10.3390/ma15176132.
Three-dimensional concrete printing (3DCP) is an innovative technology that can lead to breakthrough modifications of production processes in the construction industry. The paper presents for the first time the possibility of 3D printing concrete-geopolymer hybrids reinforced with aramid roving. Reference concrete samples and concrete-geopolymer hybrids composed of 95% concrete and 5% geopolymer based on fly ash or metakaolin were produced. The properties of the samples without reinforcement and samples with 0.5% (wt.) aramid roving were compared. The frost resistance tests, UV radiation resistance, and thermal conductivity were evaluated for samples that were 3D-printed or produced by the conventional casting method. Compressive strength tests were carried out for each sample exposed to freeze-thaw cycles and UV radiation. It was observed that after the frost resistance test, the samples produced by the 3D printing technology had a minor decrease in strength properties compared to the samples made by casting. Moreover, the thermal conductivity coefficient was higher for concrete-geopolymer hybrids than concrete reinforced with aramid roving.
三维混凝土打印（3DCP）是一项创新技术，它能够给建筑行业的生产工艺带来突破性变革。本文首次展示了用芳纶粗纱增强3D打印混凝土-地质聚合物混合物的可能性。制备了参考混凝土样品以及由95%的混凝土和5%基于粉煤灰或偏高岭土的地质聚合物组成的混凝土-地质聚合物混合物。对比了未增强样品和含0.5%（重量）芳纶粗纱样品的性能。对通过3D打印或传统浇筑方法制备的样品进行了抗冻性试验、抗紫外线辐射性能试验以及热导率评估。对经受冻融循环和紫外线辐射的每个样品都进行了抗压强度试验。结果发现，在抗冻性试验后，与浇筑法制备的样品相比，3D打印技术制备的样品强度性能略有下降。此外，混凝土-地质聚合物混合物的热导率系数高于芳纶粗纱增强混凝土的热导率系数。
