Popławski Jakub, Lelusz Małgorzata
Department of Construction and Road Engineering, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, Poland.
Materials (Basel). 2021 Nov 4;14(21):6654. doi: 10.3390/ma14216654.
Biomass combustion is a significant new source of green energy in the European Union. The adequate utilization of byproducts created during that process is a growing challenge for the energy industry. Biomass fly ash could be used in cement composite production after appropriate activation of that material. This study had been conducted to assess the usefulness of mechanical and physical activation methods (grinding and sieving), as well as activation through the addition of active silica in the form of silica fume, as potential methods with which to activate biomass fly ash. Setting time, compressive strength, water absorption and bulk density tests were performed on fresh and hardened mortar. While all activation methods influenced the compressive strength development of cement mortar with fly ash, sieving of the biomass fly ash enhanced the early compressive strength of cement mortar. The use of active silica in the form of silica fume ensured higher compressive strength results than those of control specimens throughout the entire measurement period.
生物质燃烧是欧盟一种重要的新型绿色能源来源。在该过程中产生的副产品的充分利用，对能源行业来说是一项日益严峻的挑战。生物质飞灰在经过适当活化后可用于水泥复合材料生产。本研究旨在评估机械和物理活化方法（研磨和筛分）以及通过添加硅灰形式的活性二氧化硅进行活化，作为活化生物质飞灰的潜在方法的有效性。对新鲜和硬化的砂浆进行了凝结时间、抗压强度、吸水率和堆积密度测试。虽然所有活化方法都影响了含飞灰水泥砂浆的抗压强度发展，但筛分生物质飞灰提高了水泥砂浆的早期抗压强度。在整个测量期间，使用硅灰形式的活性二氧化硅确保了比对照试件更高的抗压强度结果。
