scholarly journals Performance of Plain Concrete and Cement Blocks with Cement Partially Replaced by Cement Kiln Dust

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5647
Author(s):  
Yasir M. Alharthi ◽  
Ahmed S. Elamary ◽  
Waleed Abo-El-Wafa
Keyword(s):  
Negative Impact ◽  
Plain Concrete ◽  
Waste Materials ◽  
Experimental Program ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Air Content ◽  
Potential Benefits ◽  
Plant Respiration ◽  
Kiln Dust

The growth of the construction industry has led to the greater consumption of natural resources, which has a direct or indirect negative impact on the environment. To mitigate this, recycled or waste materials are being used as a partial substitute in the manufacture of concrete. Among these waste materials is cement kiln dust (CKD), which is produced during cement production. This study investigated the potential benefits of replacing part of the cement with CKD in two construction applications, i.e., plain concrete and cement blocks. This reflects positively on cost, energy, and the environment, since putting CKD in a landfill damages agricultural soil and plant respiration. In this study, an experimental program was carried out to study how replacing various percentages of ordinary portland cement (OPC) with CKD affected the compressive strengths, the tensile strengths, and the air contents of concrete and cement blocks. Although the results showed that the compressive and tensile strengths decreased as the amount of CKD increased, the air content of the concrete increased, which showed that 5% CKD was suitable for such applications. The results were used to propose two equations that approximate the concrete and cement block compressive strengths according to the CKD replacement percentage.

Fresh and hardened properties of self-compacting concrete containing of cement kiln dust

2019 ◽  
Vol 10 (1) ◽  
pp. 13 ◽  
Author(s):  
Ibrahim Saad Agwa ◽  
Omar Mohamed Omar Ibrahim
Keyword(s):  
Rotary Kiln ◽  
Raw Materials ◽  
Economic Problem ◽  
Cement Industry ◽  
Experimental Program ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Self Compacting Concrete ◽  
Cement Replacement ◽  
Kiln Dust

There are many wastes form the cement industry among them cement kiln dust (CKD). This residue is obtained after the process of burning the raw materials of cement in the rotary kiln where it is suctioned by fans during the clinker exit of the rotary kiln. Cement dust is a major environmental and economic problem in terms of high quality air pollution ranging from (20-100) microns and the proportions of chlorides, sulphates, alkali and lime living in a way that threatens the general health of human, as well as water pollution if the waste is discharged by rivers and waterways. This investigation’s main objective is to present the potential of using CKD as a cement replacement in self-compacting concrete (SCC). Eight mixes incorporating CKD with partial cement replacement of 0%, 5%, 10%, 20%, 30%, 40%, 50% and 75% in addition to control mix were investigated. The properties of all mixture were determined. Based on the experimental program results, it was found that SCC mixture incorporating 5% to 10% of CKD was almost similar to that of control mixture. The workability of SCC concrete decreased as CKD replacement increased. This established benefits of substituting cement by CKD to make SCC.

Valorization of Metal Milling Waste in Cement Based Mortars Modified by Replacement of Cement Kiln Dust

2021 ◽  
Vol 47 (1) ◽  
pp. 19-30
Author(s):  
Bouzeroura-Mansour
Keyword(s):  
Cement Paste ◽  
Setting Time ◽  
Partial Replacement ◽  
Experimental Program ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Cement Pastes ◽  
Clean Environment ◽  
Materials Research ◽  
Kiln Dust

Recycling industrial by-product materials waste has become an attractive topic of materials research in civil engineering. These industrial by-product materials waste must be managed responsibly to insure a clean environment. Our research was conducted with the aim of investigating the effect of the addition of two industrial by product materials waste: metal milling waste (F) and cement kiln dust (CKD) in cement paste/mortar, as well as how to assess the influence of CKD substitution on the mechanical properties of cement pastes to create a new hydraulic binder based on partial replacement. An experimental program was conducted on samples of cement paste prepared at three CKD content (5%, 10%, 15% wt. of cement) and new mortars were prepared by: partial replacement of ordinary Portland cement by CKD at 5% by mass; and the simple addition of metal milling waste at three different percentages of (10%, 20%, 30% wt. of binder). Chemical, Micro structural analysis and mineralogical analysis have been carried out using XRD and FT-IR techniques, the mechanical strength, shrinkage, swelling, setting times, were analyzed.<br/> Test results after a 28-day hardening period indicated that when the increase in the CKD replacement, the expansion obtained in the mixed cement pastes increase and the initial and final setting time decreases. The improvement of the strength of cement kiln dust (CKD) in the mixed cement pastes is low, it was found that adding 5% of cement weight CKD is the appropriate percentage for utilizing in the manufacturing of mortars. the addition of metal milling wastes in mortars leads to a considerable improvement of mechanical strengths compared to the reference mortar. The strength increases when the percentage of Metal milling wastes additions increases until an optimum (20%).

Properties of Self-Compacting Cementitious Composite Materials Containing Cement Kiln Dust Powder

2020 ◽  
Vol 38 (6A) ◽  
pp. 879-886
Author(s):  
Ahmed S. Kadhim ◽  
Alaa A. Atiyah ◽  
Shakir A. Salih
Keyword(s):  
Composite Materials ◽  
Total Porosity ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Cementitious Composite ◽  
Cement Dust ◽  
Micro Cracks ◽  
Load Carrying ◽  
Sustainable Materials ◽  
Kiln Dust

This paper aims to investigate the influence of utilization micro cement kiln dust as a sustainable materials additive in order to reduce the voids and micro cracks in the cementitious mortar materials which cause a drastic reduction in the load carrying capacity of the element. Its therefore very important to decrease the pores and enhance the mechanical strength of the cementitious composite materials. In this article, the properties of self-compacting mortar containing micro cement dust additive was experimentally assessed. Micro cement dust powder was added to the self-compacting mortar in (1, 2, 3, 4 and 5 %) percentage by weight of cement to be used as cementitious sustainable materials. The experimental results indicated that the modification and enhancement of the workability of fresh mixture and the mechanical strengths of self-compacting mortar were increased as micro cement dust additives increases. Also; the water absorption and total porosity were decreased with increases of micro cement dust powder.

scholarly journals Application of Cement Kiln Dust as Activator of Ground Granulated Blast Slag for Developing A Novel Cold Mix Asphalt

2021 ◽  
Vol 1090 (1) ◽  
pp. 012029
Author(s):  
Ruqayah Al-Khafaji ◽  
Anmar Dulaimi ◽  
Monower Sadique ◽  
Ayat Aljsane
Keyword(s):  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Kiln Dust
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