Evaluation of the Injana claystone from Central Iraq for the brick industry

The aim of this study is to suggest an ancient clay for the manufacturing bricks as an alternative to the recent clays that are considered as agricultural lands. The Late Miocene claystone bed in the Injana Formation at middle of Iraq was targeted through 18 exposed sections that were sampled by usi...

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Main Authors: Salih Mohammad Awadh, Ali Mutlag Awad
Format: Article
Language:English
Published: Elsevier 2021-04-01
Series:Kuwait Journal of Science
Subjects:
Online Access:https://journalskuwait.org/kjs/index.php/KJS/article/view/9006
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author Salih Mohammad Awadh
Ali Mutlag Awad
author_facet Salih Mohammad Awadh
Ali Mutlag Awad
author_sort Salih Mohammad Awadh
collection DOAJ
description The aim of this study is to suggest an ancient clay for the manufacturing bricks as an alternative to the recent clays that are considered as agricultural lands. The Late Miocene claystone bed in the Injana Formation at middle of Iraq was targeted through 18 exposed sections that were sampled by using the trench sampling method. The samples are characterized by mineralogy dominated by quartz (36.4%) followed by calcite (32.8%), feldspar (2.6%), gypsum (0.9%) and dolomite (0.7%) in addition to non-clay minerals composed of kaolinite (10.1%), illite (7.7%), chlorite (6.7%), palygorskite (6.0%) and montmorillonite (1.2%). New Thermal mineral phases were formed at 950°C include diopside (35.6%), quartz (21.6%), wollastonite (11.4%), akermanite (11.1%), and gehlenite (2.3%). The engineering tests of the raw material showed the plasticity according to the Atterberg limits varies from low to high, low volumetric and linear shrinkage during drying and firing with a temperature at 950°C. The raw material produced bricks with 156 kg/cm2 uniaxial compressive strength, 23.4% water absorption and nil to low efflorescence. The results indicate the success of the Late Miocene clay in the manufacture of bricks for medium to high quality within the A and B category based on the Iraqi standard specification No.25 in 1993.
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spelling doaj-art-2fac6ac8a879404d87f26750793da5802025-08-20T03:24:56ZengElsevierKuwait Journal of Science2307-41082307-41162021-04-0148210.48129/kjs.v48i2.9006Evaluation of the Injana claystone from Central Iraq for the brick industrySalih Mohammad Awadh0Ali Mutlag Awad1University of BaghdadUniversity of BaghdadThe aim of this study is to suggest an ancient clay for the manufacturing bricks as an alternative to the recent clays that are considered as agricultural lands. The Late Miocene claystone bed in the Injana Formation at middle of Iraq was targeted through 18 exposed sections that were sampled by using the trench sampling method. The samples are characterized by mineralogy dominated by quartz (36.4%) followed by calcite (32.8%), feldspar (2.6%), gypsum (0.9%) and dolomite (0.7%) in addition to non-clay minerals composed of kaolinite (10.1%), illite (7.7%), chlorite (6.7%), palygorskite (6.0%) and montmorillonite (1.2%). New Thermal mineral phases were formed at 950°C include diopside (35.6%), quartz (21.6%), wollastonite (11.4%), akermanite (11.1%), and gehlenite (2.3%). The engineering tests of the raw material showed the plasticity according to the Atterberg limits varies from low to high, low volumetric and linear shrinkage during drying and firing with a temperature at 950°C. The raw material produced bricks with 156 kg/cm2 uniaxial compressive strength, 23.4% water absorption and nil to low efflorescence. The results indicate the success of the Late Miocene clay in the manufacture of bricks for medium to high quality within the A and B category based on the Iraqi standard specification No.25 in 1993. https://journalskuwait.org/kjs/index.php/KJS/article/view/9006BricksCompressive strengthGeotechnical evaluationInjana Formation claystone.
spellingShingle Salih Mohammad Awadh
Ali Mutlag Awad
Evaluation of the Injana claystone from Central Iraq for the brick industry
Kuwait Journal of Science
Bricks
Compressive strength
Geotechnical evaluation
Injana Formation claystone.
title Evaluation of the Injana claystone from Central Iraq for the brick industry
title_full Evaluation of the Injana claystone from Central Iraq for the brick industry
title_fullStr Evaluation of the Injana claystone from Central Iraq for the brick industry
title_full_unstemmed Evaluation of the Injana claystone from Central Iraq for the brick industry
title_short Evaluation of the Injana claystone from Central Iraq for the brick industry
title_sort evaluation of the injana claystone from central iraq for the brick industry
topic Bricks
Compressive strength
Geotechnical evaluation
Injana Formation claystone.
url https://journalskuwait.org/kjs/index.php/KJS/article/view/9006
work_keys_str_mv AT salihmohammadawadh evaluationoftheinjanaclaystonefromcentraliraqforthebrickindustry
AT alimutlagawad evaluationoftheinjanaclaystonefromcentraliraqforthebrickindustry