Hakkomaz Hadiye, Yorulmaz Hediye, Durak Uğur, İlkentapar Serhan, Karahan Okan, Atiş Cengiz Duran
Graduate School of Natural and Applied Science, Erciyes University, 38280, Kayseri, Turkey.
Civil Engineering Department, Engineering Faculty, Abdullah Gul University, 38080, Kayseri, Turkey.
Environ Sci Pollut Res Int. 2022 Oct;29(50):76166-76175. doi: 10.1007/s11356-022-21281-z. Epub 2022 Jun 6.
There are very few studies in the literature on the usage of CKD in cementitious systems. This article presents the laboratory study results on the influence of cement kiln dust (CKD) on the properties of mortar made with cement kiln dust and Portland cement. The article aims to prevent CKD's (known as a hazardous waste product) damage to nature by utilizing CKD in cementitious systems and contributing to sustainability by reducing cement amount in the cementitious system. For this purpose, 5%, 10%, 15%, and 20% of CKD were replaced with cement and binary cementitious systems were formed. For all mortar mixes, the water/binder ratio was kept constant at 0.5, and the sand/binder ratio was 3. Workability, dry unit weight, water absorption ratio and porosity, flexural strength, compressive strength, abrasion, carbonation, and high-temperature resistance tests were performed on the mortar specimens. Based on the results of laboratory work, it was observed that the replacement of CKD with cement reduces the workability of fresh mortar. Compressive and flexural strengths of CKD-added mixtures were found to be equivalent or insignificantly lower than that of the control sample. The addition of CKD had a negligible effect on water absorption and porosity of samples. Besides, the residual compressive strength determined after the elevated temperature test for the sample made with CKD were found to be equivalent or higher compared to the control sample. Present laboratory studies showed that utilization of CKD in cementitious mortar system is feasible in terms of testing conducted.
关于水泥基体系中水泥窑灰（CKD）使用的文献研究非常少。本文介绍了关于水泥窑灰对由水泥窑灰和波特兰水泥制成的砂浆性能影响的实验室研究结果。本文旨在通过在水泥基体系中利用水泥窑灰来防止其（一种已知的危险废物产品）对自然造成损害，并通过减少水泥基体系中的水泥用量来促进可持续发展。为此，用水泥替代了5%、10%、15%和20%的水泥窑灰，形成了二元水泥基体系。对于所有砂浆混合物，水胶比保持恒定为0.5，砂胶比为3。对砂浆试件进行了工作性、干单位重量、吸水率和孔隙率、抗折强度、抗压强度、耐磨性、碳化和耐高温性测试。基于实验室工作结果，观察到用水泥替代水泥窑灰会降低新鲜砂浆的工作性。发现添加水泥窑灰的混合物的抗压强度和抗折强度与对照样品相当或略低。添加水泥窑灰对样品吸水率和孔隙率的影响可忽略不计。此外，发现用水泥窑灰制成的样品在高温试验后测定的残余抗压强度与对照样品相当或更高。目前的实验室研究表明，就所进行的测试而言，在水泥基砂浆体系中利用水泥窑灰是可行的。
