Modern materials used in civil engineering should fulfill the numerous of requirements connected building standards, but not only. They should also be ecological and durable. Geopolymers are characterized by very good mechanical properties, high resistance against acids, chlorides and sulfates, high thermal resistance, and other properties confirmed by previous research. There is still a few amount of research connected with resistance, this materials for different environmental conditions, especially a lack of investigation connected with foamed geopolymers in this area. The main objective of the article is to analyze the possibilities of the development of new foamed geopolymer composites to increase durability, especially against degradation in corrosive water environments. This paper presents the influence on the mechanical properties of foamed geopolymer composites on the water environment. As raw materials, fly ash from the coal power plant ‘Skawina’ (located in: Skawina, Lesser Poland, Poland) and metakaolin (Czech Republic) were used. The chemical composition of the fly ash is typical for class F. Additionally, the composites were reinforced by flax fiber. Solid and foam samples were prepared. As a foaming agent, hydrogen peroxide (H\(_{2}\)O\(_{2})\) was applied. The following research methods were applied: compressive strength, flexural strength, porosity measurements, water absorption in fresh and salt water. The results show that, however, environmental conditions have a significant influence on the mechanical properties of geopolymer composites; the geopolymer composites can be successfully produced with the addition of natural fibers and have good strength parameters even after long-term use (materials were tested after 360 days).

土木工程中使用的现代材料应满足与建筑标准相关的众多要求，但不仅如此。它们还应该是生态和耐用的。地质聚合物具有非常好的机械性能、对酸、氯化物和硫酸盐的高耐受性、高耐热性以及先前研究证实的其他特性。与电阻有关的研究仍然很少，这种材料适用于不同的环境条件，特别是在该领域缺乏与泡沫地质聚合物有关的研究。本文的主要目的是分析开发新型泡沫地质聚合物复合材料以提高耐用性的可能性，特别是在腐蚀性水环境中防止降解。本文介绍了泡沫地质聚合物复合材料对水环境的力学性能的影响。作为原材料，使用来自燃煤电厂“Skawina”（位于：Skawina，小波兰，波兰）和偏高岭土（捷克共和国）的粉煤灰。飞灰的化学成分是 F 类的典型成分。此外，复合材料由亚麻纤维增强。制备固体和泡沫样品。作为发泡剂，过氧化氢（H\(_{2}\) O \(_{2})\)已应用。应用了以下研究方法：抗压强度、抗弯强度、孔隙率测量、淡水和盐水中的吸水率。结果表明，然而，环境条件对地质聚合物复合材料的力学性能有显着影响；地质聚合物复合材料可以通过添加天然纤维成功生产，即使在长期使用后仍具有良好的强度参数（材料在 360 天后进行测试）。