Open AccessUse of treated cement kiln dust as a nano material partially replaced in cement mortars
Author(s) -
Hakim Saeed Muhammed,
Luay Muhammed Ali,
Abaid-ur-Rehman Saeed
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1973/1/012016
Subject(s) - cement , mortar , materials science , compressive strength , kiln , curing (chemistry) , cement kiln , composite material , metallurgy , waste management , engineering
Cement kiln dust (CKD) is a by-product material of cement manufacturing. The composition of this material is approximately like the cement composition but it carries high ratio of alkali which is harmful material if it is used in structural construction members. In this study it was used after removing most of alkali by washing, in cement mortars as partial replacement of cement. After washing it was left to be dried. The material was grinded by Los Angeles machine firstly and then milled by a planetary mill in periods of 1,1.5,2,2.5,3,3.5, and 4 hours respectively to reach nano sizes of particles. It was added to cement mortars using five ratios, 0% (without milling as control ratio) and an addition of 5%, 10%, 15%, and 20% ratios compared to cement weight respectively. The properties which were studied include compressive strength of mortar through curing periods 7, 28, 56 days, physical and chemical properties of the mortars. The results of this work ensure the work of one of the authors in the literature and an improvement in mortar compressive strength reaches 35%. Other physical and chemical properties were also improved. Depending upon the governed results washed CKD can be used safely in cement mortars.