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首页> 外文会议>International Conference on Actual Issues of Mechanical Engineering >Polyfunctional modifier for bio-corrosion resistant high-performance fine-aggregate concretes
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Polyfunctional modifier for bio-corrosion resistant high-performance fine-aggregate concretes

机译：用于生物腐蚀性高性能细骨料混凝土的多官能改性剂

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Use of binders with low water demand opens prospects for obtaining high-performance concretes. A polyfunctional modifier based on resol-type resorcinol-furfural oligomers allows one to obtain binders with low water demand and high specific surface area, compressive strength, and water-reducing ability. This research demonstrates that a more intensive strength development for 1-2 days of curing is observed in concretes based on low water demand binders compared to the reference sample. During this process, a denser microcrystalline structure with no large-grained formations or visible defects is formed. It was proved that introduction of the optimum quantity of the modifier into a binder completely suppresses mold growth. Isolates of Aspergillus niger and Penicillium chrisogenum Thom fungi were used as the biological deterioration factor for specimen. Assessment of antifungal properties of resorcinol-furfural oligomers on a six-point scale (sample/environment) is presented. Strength properties of the concrete with the modifier in question are significantly increased due to the decrease of the water-cement ratio, the reduction of microfractures within the concrete, higher density of its structure, and absence of bio-corrosion. The resorcinol-furfural polyfunctional modifier can be used to produce innovative high-strength materials for use in additive manufacturing and further use of the produced articles in biologically active environments.
机译：使用低水需求的粘合剂打开获得高性能混凝土的前景。基于甲膜型间苯二酚糠醛糠醛的多官能改性剂允许人们获得具有低水需求和高比表面积，抗压强度和降低水的粘合剂。本研究表明，与参考样品相比，基于低水需求粘合剂的混凝土中，在基于低水需求粘合剂的混凝土中观察到更加强烈的强度发展。在此过程中，形成没有大颗粒形成或可见缺陷的更密集的微晶结构。事实证明，将改性剂的最佳量引入粘合剂中完全抑制了模具生长。用作标本的生物劣化因子，曲霉尼格斯尼日尔和青霉菌素的分离物。介绍了对六点刻度（样品/环境）对六分子糠醛寡聚体的抗真菌性能的评估。由于水水泥比率降低，混凝土的混凝土的强度性质显着增加，混凝土中的微磨损，其结构的密度较高，并且没有生物腐蚀，微乳状物的减少，并且没有生物腐蚀，显着增加。间苯二酚 - 糠醛多官能改性剂可用于生产用于添加剂制造的创新的高强度材料，以及在生物活性环境中进一步使用所生产的制品。

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