Miturski Maciej, Sas Wojciech, Radzevičius Algirdas, Šadzevičius Raimondas, Skominas Rytis, Stelmaszczyk Mateusz, Głuchowski Andrzej
Department of Geotechnical Engineering, Institute of Civil Engineering, Warsaw University of Life Sciences-SGGW, 02-787 Warsaw, Poland.
SGGW Water Centre, Warsaw University of Life Sciences-SGGW, 02-787 Warsaw, Poland.
Materials (Basel). 2021 Nov 17;14(22):6951. doi: 10.3390/ma14226951.
One of the fundamental techniques for road subgrades is soil stabilization. Considering the high emission of carbon dioxide during the production of binders, novel techniques to reduce the binder are being studied. Thus, we investigated dispersed reinforcement in stabilized soils. A study was conducted to determine the ultrasonic pulse velocity in nine mixtures of soil, cement, and polypropylene fibers and then correlate the results with other destructive tests. The results show a decrease in wave velocity in mixes with fiber addition by up to 18.5%. The result is dependent on the curing time and whether the samples were stored in a water tank. Immersion in water increases the obtained results by about 6.3%. Based on the analysis, for mixtures with fibers, boundary velocities of waves above which lower values of modulus of elasticity were obtained were determined. Depending on the mix and the module analyzed, the limits range from 2194 m/s to 2498 m/s.
道路路基的基本技术之一是土壤稳定。考虑到粘结剂生产过程中二氧化碳的高排放量，正在研究减少粘结剂用量的新技术。因此，我们研究了稳定土中的分散增强。进行了一项研究，以确定土壤、水泥和聚丙烯纤维的九种混合物中的超声波脉冲速度，然后将结果与其他破坏性试验相关联。结果表明，添加纤维的混合物中波速降低了18.5%。结果取决于养护时间以及样品是否储存在水箱中。浸泡在水中可使获得的结果提高约6.3%。基于分析，对于含纤维的混合物，确定了波的边界速度，高于该速度可获得较低的弹性模量值。根据混合物和分析的模量，极限范围为2194米/秒至2498米/秒。
