Skotnicki Łukasz, Kuźniewski Jarosław, Szydło Antoni
Roads and Airports Department, Faculty of Civil Engineering, Wroclaw University of Science and Technology, Wyb. Stanislawa Wyspianskiego 27, 50-370 Wroclaw, Poland.
Materials (Basel). 2021 Jan 25;14(3):563. doi: 10.3390/ma14030563.
The reduction in natural resources and aspects of environmental protection necessitate alternative uses of waste materials in the area of construction. Recycling is also observed in road construction where mineral-cement emulsion (MCE) mixtures are applied. The MCE mix is a conglomerate that can be used to make the base layer in road pavement structures. MCE mixes contain reclaimed asphalt from old, degraded road surfaces, aggregate improving the gradation, asphalt emulsion, and cement as a binder. The use of these ingredients, especially cement, can cause shrinkage and cracks in road layers. The article presents selected issues related to the problem of cracking in MCE mixtures. The authors of the study focused on reducing the cracking phenomenon in MCE mixes by using an innovative cement binder with recycled materials. The innovative cement binder based on dusty by-products from cement plants also contributes to the optimization of the recycling process in road surfaces. The research was carried out in the field of stiffness, fatigue life, crack resistance, and shrinkage analysis of mineral-cement emulsion mixes. It was found that it was possible to reduce the stiffness and the cracking in MCE mixes. The use of innovative binders will positively affect the durability of road pavements.
自然资源的减少和环境保护的诸多方面使得建筑领域必须对废料进行其他用途的利用。在道路建设中也存在回收利用的情况，即应用矿物 - 水泥乳液（MCE）混合物。MCE混合物是一种可以用于制作道路路面结构基层的集料。MCE混合物包含来自旧的、损坏路面的再生沥青、改善级配的集料、沥青乳液以及作为粘结剂的水泥。这些成分的使用，尤其是水泥，会导致道路层出现收缩和裂缝。本文介绍了与MCE混合物裂缝问题相关的一些选定问题。该研究的作者致力于通过使用含有再生材料的创新水泥粘结剂来减少MCE混合物中的裂缝现象。基于水泥厂粉尘副产品的创新水泥粘结剂也有助于优化路面的回收过程。该研究在矿物 - 水泥乳液混合物的刚度、疲劳寿命、抗裂性和收缩分析领域展开。研究发现，降低MCE混合物的刚度和裂缝是可行的。创新粘结剂的使用将对道路路面的耐久性产生积极影响。
