Utilization of Rotary Kiln Ash in Concrete Products
Qasim Hussein, Abdulkareem (2021)
Avaa tiedosto
Lataukset:
2021
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2021120223205
https://urn.fi/URN:NBN:fi:amk-2021120223205
Tiivistelmä
The aim of this thesis was to simulate the hypothesis of the terminus of an essential ingredient of a concrete mix, as well as answer the question of the possibility of utilizing a recycled material in terms of environmental and economic aspects. This thesis was commissioned by Fortum Waste Solution Oy and Lujabetoni Oy.
However, the constant demand for new buildings translates into an ever-growing annual extraction of natural resources requiring a massive use of energy and causing greenhouse gas emission on top of other environmental damages such as eutrophication depletion of the stratospheric ozone layer, air, and water pollution. However, utilization of Rotary kiln ash in concrete products could reduce the threat of disappearance of the landscape, which is the natural resource of aggregate, minimize the Co2 emission, and energy consumption. Economically it would decrease the cost of energy and labor required to gain conventional aggregate.
This study discusses the durability of the concrete product, which is manufactured utilizing Rotary kiln ash with aggregate in different percentages or utilizing the Rotary kiln ash alone instead of the aggregate. Six different trials mix were carried out to avoid all disputes and to provide a clear outcome. One trail mix, which had zero percent of Rotary kiln ash was accomplished to be in a comparison with the other trails. For obtaining a better view of the interaction of the product, five trials that contained 25%, 45%, 55%, 75%, and 100% of Rotary kiln ash were molded and tested for compressive strength. The water-cement ratio, type and quantity of fine aggregate and cement were fixed in trials. Compressive strength tests for trials with Rotary kiln ash were accomplished at the age of 1, 3, 7, 14, and 28 days, and for typical specimens, a compressive strength test was carried out only at the age of 14 and 28 days. The axial tensile strength test completed at the age of 28 days for four (4) concrete specimens comprised 0%, 45%, 75%, and 100% of Rotary kiln ash.
Compressive strength results showed a gradual increase in the strength of the products. Two different concrete grades were achieved as a result of trials according to the six various concrete compressive strengths obtained at the age of 28 days. This thesis provides some suggestions for future research as well as it can be a guideline for any concrete mix that utilizes Rotary kiln ash.
However, the constant demand for new buildings translates into an ever-growing annual extraction of natural resources requiring a massive use of energy and causing greenhouse gas emission on top of other environmental damages such as eutrophication depletion of the stratospheric ozone layer, air, and water pollution. However, utilization of Rotary kiln ash in concrete products could reduce the threat of disappearance of the landscape, which is the natural resource of aggregate, minimize the Co2 emission, and energy consumption. Economically it would decrease the cost of energy and labor required to gain conventional aggregate.
This study discusses the durability of the concrete product, which is manufactured utilizing Rotary kiln ash with aggregate in different percentages or utilizing the Rotary kiln ash alone instead of the aggregate. Six different trials mix were carried out to avoid all disputes and to provide a clear outcome. One trail mix, which had zero percent of Rotary kiln ash was accomplished to be in a comparison with the other trails. For obtaining a better view of the interaction of the product, five trials that contained 25%, 45%, 55%, 75%, and 100% of Rotary kiln ash were molded and tested for compressive strength. The water-cement ratio, type and quantity of fine aggregate and cement were fixed in trials. Compressive strength tests for trials with Rotary kiln ash were accomplished at the age of 1, 3, 7, 14, and 28 days, and for typical specimens, a compressive strength test was carried out only at the age of 14 and 28 days. The axial tensile strength test completed at the age of 28 days for four (4) concrete specimens comprised 0%, 45%, 75%, and 100% of Rotary kiln ash.
Compressive strength results showed a gradual increase in the strength of the products. Two different concrete grades were achieved as a result of trials according to the six various concrete compressive strengths obtained at the age of 28 days. This thesis provides some suggestions for future research as well as it can be a guideline for any concrete mix that utilizes Rotary kiln ash.