Dyuryagina Antonina, Byzova Yuliya, Ostrovnoy Kirill, Demyanenko Alexandr, Tyukanko Vitaliy, Lutsenko Aida
Department of Chemistry and Chemical Technology, Manash Kozybayev North Kazakhstan University, Petropavlovsk 150000, Kazakhstan.
Polymers (Basel). 2024 May 11;16(10):1370. doi: 10.3390/polym16101370.
The purpose of these studies was to establish the influence of the microstructural and rheological characteristics of modified bitumen compositions on the strength indicators of asphalt concrete. The effect of additives concentration on the rheological characteristics and microstructure of binary "bitumen-surfactant", "bitumen-AG-4I", and ternary "bitumen-AG-4I-AG-4I" systems has been studied. To assess the effect of bitumen dispersion on the physical and mechanical characteristics of modified asphalt concrete samples, the compressive strength value was determined. The following chemicals have been used as additives: the original product AS-1, industrial additive AMDOR-10, and used sealant AG-4I, a product based on polyisobutylene and petroleum oils. At an increased content of AG-4I (C ≥ 1.0 g/dm) in ternary systems, the contribution of the emerging intermolecular polyisobutylene network to the development of structuring processes increases while the viscous effect of the surfactant AS-1 decreases. It has been established that the minimum size of bee-like bitumen structures (1.66 µm) is recorded with the joint presence of additives in the bitumen, AS-1 at a level of 1.0 g/dm and AG-4I at a level of 1.0 g/dm. Under the same concentration regimes of the ternary bitumen composition, the maximum increase in compressive strength R was achieved with the smallest size of bee-like structures of modified bitumen.
这些研究的目的是确定改性沥青组合物的微观结构和流变特性对沥青混凝土强度指标的影响。研究了添加剂浓度对二元“沥青 - 表面活性剂”、“沥青 - AG - 4I”以及三元“沥青 - AG - 4I - AG - 4I”体系的流变特性和微观结构的影响。为了评估沥青分散性对改性沥青混凝土样品物理和力学特性的影响，测定了抗压强度值。以下化学品用作添加剂：原始产品AS - 1、工业添加剂AMDOR - 10以及用过的密封剂AG - 4I（一种基于聚异丁烯和石油油的产品）。在三元体系中，当AG - 4I含量增加（C≥1.0 g/dm）时，新出现的分子间聚异丁烯网络对结构化过程发展的贡献增加，而表面活性剂AS - 1的粘性效应降低。已经确定，当沥青中添加剂AS - 1含量为1.0 g/dm且AG - 4I含量为1.0 g/dm同时存在时，记录到蜜蜂状沥青结构的最小尺寸（1.66 µm）。在三元沥青组合物相同的浓度条件下，改性沥青的蜜蜂状结构尺寸最小时，抗压强度R的增加最大。
