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California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement

Environmental concerns have significantly influenced the construction industry regarding the identification and use of environmentally sustainable construction materials. In this context, enzymes (organic materials) have been introduced recently for ground improvement projects such as pavements and...

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Main Authors: Khan, Tanveer Ahmed, Mohd. Raihan Taha,, Firoozi, Ali Asghar, Firoozi, Ali Akbar
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11145/1/11%20Tanveer%20Ahmed%20Khan.pdf
http://journalarticle.ukm.my/11145/
http://www.ukm.my/jsm/malay_journals/jilid46bil8_2017/KandunganJilid46Bil8_2017.html
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spelling my-ukm.journal.111452017-12-22T08:40:41Z http://journalarticle.ukm.my/11145/ California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement Khan, Tanveer Ahmed Mohd. Raihan Taha, Firoozi, Ali Asghar Firoozi, Ali Akbar Environmental concerns have significantly influenced the construction industry regarding the identification and use of environmentally sustainable construction materials. In this context, enzymes (organic materials) have been introduced recently for ground improvement projects such as pavements and embankments. The present experimental study was carried out in order to evaluate the compressive strength of a sedimentary residual soil treated with three different types of enzymes, as assessed through a California bearing ratio (CBR) test. Controlled untreated and treated soil samples containing four dosages (the recommended dose and two, five and 10 times the recommended dose) were prepared, sealed and cured for four months. Following the curing period, samples were soaked in water for four days before the CBR tests were administered. These tests showed no improvement in the soil is compressive strength; in other words, samples prepared even at higher dosages did not exhibit any improvement. Nuclear magnetic resonance (NMR) spectroscopy tests were carried out on three enzymes in order to study the functional groups present in them. Furthermore, X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) tests were executed for untreated and treated soil samples to determine if any chemical reaction took place between the soil and the enzymes. Neither of the tests (XRD nor FESEM) revealed any change. In fact, the XRD patterns and FESEM images for untreated and treated soil samples were indistinguishable. Penerbit Universiti Kebangsaan Malaysia 2017-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11145/1/11%20Tanveer%20Ahmed%20Khan.pdf Khan, Tanveer Ahmed and Mohd. Raihan Taha, and Firoozi, Ali Asghar and Firoozi, Ali Akbar (2017) California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement. Sains Malaysiana, 46 (8). pp. 1259-1267. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid46bil8_2017/KandunganJilid46Bil8_2017.html
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Environmental concerns have significantly influenced the construction industry regarding the identification and use of environmentally sustainable construction materials. In this context, enzymes (organic materials) have been introduced recently for ground improvement projects such as pavements and embankments. The present experimental study was carried out in order to evaluate the compressive strength of a sedimentary residual soil treated with three different types of enzymes, as assessed through a California bearing ratio (CBR) test. Controlled untreated and treated soil samples containing four dosages (the recommended dose and two, five and 10 times the recommended dose) were prepared, sealed and cured for four months. Following the curing period, samples were soaked in water for four days before the CBR tests were administered. These tests showed no improvement in the soil is compressive strength; in other words, samples prepared even at higher dosages did not exhibit any improvement. Nuclear magnetic resonance (NMR) spectroscopy tests were carried out on three enzymes in order to study the functional groups present in them. Furthermore, X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) tests were executed for untreated and treated soil samples to determine if any chemical reaction took place between the soil and the enzymes. Neither of the tests (XRD nor FESEM) revealed any change. In fact, the XRD patterns and FESEM images for untreated and treated soil samples were indistinguishable.
format Article
author Khan, Tanveer Ahmed
Mohd. Raihan Taha,
Firoozi, Ali Asghar
Firoozi, Ali Akbar
spellingShingle Khan, Tanveer Ahmed
Mohd. Raihan Taha,
Firoozi, Ali Asghar
Firoozi, Ali Akbar
California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
author_facet Khan, Tanveer Ahmed
Mohd. Raihan Taha,
Firoozi, Ali Asghar
Firoozi, Ali Akbar
author_sort Khan, Tanveer Ahmed
title California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
title_short California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
title_full California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
title_fullStr California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
title_full_unstemmed California bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
title_sort california bearing ratio tests of enzyme-treated sedimentary residual soil show no improvement
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11145/1/11%20Tanveer%20Ahmed%20Khan.pdf
http://journalarticle.ukm.my/11145/
http://www.ukm.my/jsm/malay_journals/jilid46bil8_2017/KandunganJilid46Bil8_2017.html
_version_ 1643738384903962624
score 13.211869

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