Woźniak Zuzanna Zofia, Chajec Adrian, Sadowski Łukasz
Department of Materials Engineering and Construction Processes, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
Materials (Basel). 2022 Dec 19;15(24):9066. doi: 10.3390/ma15249066.
Granite is a well-known building and decorative material, and, therefore, the amount of produced waste in the form of granite powder is a problem. Granite powder affects the health of people living near landfills. Dust particles floating in the air, which are blown by gusts of wind, can lead to lung silicosis and eye infections, and can also affect the immune system. To find an application for this kind of waste material, it was decided to study the effect of partially replacing cement with waste granite powder on the properties of fresh and hardened mortars intended for masonry applications. The authors planned to replace 5%, 10%, and 15% of cement with waste material. Series of mortar with the addition of granite powder achieved 50% to 70% of the compressive strength of the reference series, and 60% to 76% of the bending strength of the reference series. The partial replacement of cement with the granite powder significantly increased the water sorption coefficient. The consistency of the fresh mortar, and its density and water absorption also increased when compared to the reference series. Therefore, Granite powder can be used as a partial replacement of cement in masonry mortars.
花岗岩是一种知名的建筑和装饰材料，因此，以花岗岩粉末形式产生的废料量是一个问题。花岗岩粉末会影响生活在垃圾填埋场附近居民的健康。随风飘散在空气中的灰尘颗粒会导致矽肺病和眼部感染，还会影响免疫系统。为了找到这种废料的用途，研究人员决定研究用废弃花岗岩粉末部分替代水泥对用于砌筑的新拌砂浆和硬化砂浆性能的影响。作者计划用废料替代5%、10%和15%的水泥。添加花岗岩粉末的砂浆系列达到了参考系列抗压强度的50%至70%，以及参考系列抗弯强度的60%至76%。用花岗岩粉末部分替代水泥显著提高了吸水系数。与参考系列相比，新拌砂浆的稠度、密度和吸水率也有所增加。因此，花岗岩粉末可作为砌筑砂浆中水泥的部分替代品。
