Utilization of By-Pass Cement Kiln Dust in Alkali-Activated Materials

2018 ◽  
Vol 761 ◽  
pp. 23-26 ◽  
Author(s):  
Eva Štěpánková ◽  
Lukáš Kalina ◽  
Vlastimil Bílek Jr. ◽  
Eva Bartoníčková
Keyword(s):  
Mechanical Properties ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Optimal Dosage ◽  
Reaction Products ◽  
Practical Applications ◽  
Phase Study ◽  
Kiln Dust ◽  
Furnace Slag ◽  
Alkali Activated

This paper deals with the mechanical properties and phase study of alkali activated blast furnace slag and by-pass cement kiln dust mixture. The by-pass cement kiln dust (CKD) solves the problem with significant shrinkage of alkali activated materials which is considerably limiting their practical applications. The mechanism of action of CKD in alkali activated matrix has been investigated as well as its optimal dosage in the means of mechanical properties. The reaction products during the hydration process were characterized by X-ray powder diffraction.

scholarly journals Mechanical properties of Self-Consolidating Concrete incorporating Cement Kiln Dust

HBRC Journal ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Mostafa Abd El-Mohsen ◽  
Ahmed M. Anwar ◽  
Ihab A. Adam
Keyword(s):  
Mechanical Properties ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Self Consolidating Concrete ◽  
Kiln Dust

Evaluation of some Specific Effects of Pavement Kerbs Containing Cement Kiln Dust on Soil and Lawns - The First Experimental Phase

2020 ◽  
Vol 838 ◽  
pp. 23-30
Author(s):  
Lukáš Procházka ◽  
Barbara Vojvodíková
Keyword(s):  
Blast Furnace Slag ◽  
Direct Contact ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Experimental Phase ◽  
Specific Effects ◽  
Grass Growth ◽  
Kiln Dust ◽  
Furnace Slag

This article deals with the evaluation of the effects on soil caused by leaching of materials from curbs, which were made using cement kinl dust from the cement plant Horné Srnie. Attention is also paid to a condition of the grass growing near the curbs. These laboratory curbs (bricks) were produced with addition of cement kiln dust and fly ash after denitrification by the SNCR method in alkaline activated materials based on blast furnace slag granules activated by anhydrous disodium metasilicate During the experiment the effects of laboratory curbs on grass growth in testing flower pots were investigated. The aim of the experiment was to obtain a product suitable for curbs with supposed direct contact with the soil. The experiment dealt with the properties of laboratory curbs stored in situ as well as with their influence on the soil and the effect of leached substances on the surrounding grass. The main part of the experiment was conducted in situ.

scholarly journals The Effect of Using Cement Kiln Dust as a Partial Replacement of Cement on The Mechanical Properties of Concrete: Review and Modelling

2020 ◽  
pp. 99-116
Author(s):  
Nawdar Sabir Faraj ◽  
Mahdi Osman Hassun
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Partial Replacement ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Model Equations ◽  
Cement Manufacturing ◽  
Kiln Dust ◽  
Proper Disposal ◽  
Curing Age

There have been many efforts in reusing Cement Kiln Dust (CKD), a by-product of cement manufacturing, in various areas of civil works. These efforts have been made due to the necessity of the material for proper disposal, because of its very fine texture and the fact that if not handled properly, it will be harmful to human health and the environment. Numerous studies have been conducted to investigate the effects of incorporating CKD in concrete as an approach of reusing it. In the current study, the effect of using cement kiln dust on the mechanical properties of concrete as a partial replacement of cement was reviewed. The investigated mechanical properties were compressive strength for the curing ages of 7 and 28 days and tensile and flexural strengths, modulus of elasticity, and water absorption for the curing age of 28 days. It was concluded that replacing cement with CKD leads to detrimental effects on all mechanical properties of concrete. There were sufficient amount of data to establish correlations between the amount of cement replacement with CKD, and its effect on all mechanical properties of concrete except for water absorption. Regression analyses were performed and model equations with acceptably high R2s were prepared. The optimal CKD content regarding all mechanical properties was concluded to be 10% by the cement weight, at which 7 and 28 days compressive strengths, 28 days tensile and flexural strengths, and elastic modulus decreased by amounts of 11%, 12%, 8%, 9%, and 8% respectively.

Incorporating of CKD in binder course cold asphalt emulsion mixtures

2021 ◽  
Author(s):  
Abbas Al-Hdabi ◽  
Mohammed Al-Jumaili ◽  
Huda Abdulzahra
Keyword(s):  
Mechanical Properties ◽  
Environmental Impact ◽  
Portland Cement ◽  
Manufacturing Industry ◽  
Energy Savings ◽  
Cement Kiln Dust ◽  
Cement Kiln ◽  
Asphalt Emulsion ◽  
Cement Manufacturing ◽  
Kiln Dust

AbstractCold asphalt emulsion mixtures are produced at ambient temperature and it have several advantages i.e., energy savings, safety and reducing CO2 emission during manufacturing and construction, reduction of adverse environmental impact. Cement kiln dust is a fine powdery substance with appearance similar to Portland cement that is generated as a by-product material of cement manufacturing industry. The aim of this research is addition of cement kiln dust instead of Portland cement as filler in asphalt emulsion mixtures. Cement kiln dust was added with 2, 4, 6, and 8% from total weight of aggregate to improve the mechanical properties and durability of this mixture. The results were very positive and encouraging, due to the improvement of the mechanical properties and durability of the mixtures.

Strength and Porosity of Materials on the Basis of Blast Furnace Slag Activated by Liquid Sodium Silicate

2016 ◽  
Vol 851 ◽  
pp. 45-50 ◽  
Author(s):  
Vlastimil Bílek Jr. ◽  
Ladislav Pařízek ◽  
Petr Kosár ◽  
Jiří Kratochvíl ◽  
Lukáš Kalina
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Liquid Sodium ◽  
Cement Kiln ◽  
Early Age ◽  
Fluidized Bed Combustion ◽  
Shrinkage Reducing Admixture ◽  
Kiln Dust ◽  
Furnace Slag ◽  
Alkali Activated

This study investigates the effect of different admixtures on strength and porosity development of mortars and pastes based on alkali activated blast furnace slag (AABFS). Fluidized bed combustion fly ash and by-pass cement kiln dust were used to replace slag in the binder by 5%wt. and 10%wt., respectively. Pure slag mortar was also modified by a shrinkage reducing admixture. The use of all the admixtures resulted in a reduction in early age strength, while only shrinkage reducing admixture had significant impact on pore size distribution. Properties of AABFS based specimens were compared to those of specimens based on ordinary Portland cement (OPC).

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