Evaluation of recycled concrete aggregate backfill for geosynthetic-reinforced MSE walls

A. Soleimanbeigi; B. F. Tanyu; A. H. Aydilek; P. Florio; A. Abbaspour; A. Y. Dayioglu; W. J. Likos

doi:10.1680/jgein.19.00025

Evaluation of recycled concrete aggregate backfill for geosynthetic-reinforced MSE walls

A. Soleimanbeigi
, B. F. Tanyu
, A. H. Aydilek^*
, P. Florio
, A. Abbaspour
, A. Y. Dayioglu
, W. J. Likos

^*Bu çalışma için yazışmadan sorumlu yazar

İnşaat Mühendisliği Bölümü

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

32 Atıf (Scopus)

Özet

Mechanical and hydraulic properties of recycled concrete aggregate (RCA) were evaluated for use as backfill in mechanically stabilized earth (MSE) walls. Large-scale drained triaxial tests, direct shear tests and pullout tests were performed to obtain mechanical properties of RCA interacting with various geosynthetics. Long-term filtration (LTF) tests were performed to evaluate hydraulic conductivity of RCA-geotextile systems. Results showed that the RCA had an internal friction angle of 49°, which was within the typical range. The RCA-uniaxial geogrid had the highest interface friction angle of 36° - and the interface friction angles of RCA-biaxial geogrid, RCA-nonwoven geotextile, and RCA-woven geotextile were 32°, 26° and 22°, respectively. Reinforced RCA showed comparable pullout capacity to reinforced sand. No slippage was observed between the RCA and geotextiles or geogrids, and the failures occurred mainly due to rupture of the geotextiles and geogrids during the pullout test. Results of the LTF tests showed that, over a filtration period of 2500 h, the ratio of mean hydraulic conductivity of RCA only to that of RCA-nonwoven geotextile and RCA-woven geotextile systems remained between 0.91 and 3.2, suggesting that the clogging of the geotextiles with RCA was minimal.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	396-412
Sayfa sayısı	17
Dergi	Geosynthetics International
Hacim	26
Basın numarası	4
DOI'lar	https://doi.org/10.1680/jgein.19.00025
Yayın durumu	Yayınlandı - 1 Ağu 2019

Bibliyografik not

Publisher Copyright:
© 2019 Thomas Telford Ltd.

Finansman

The funding for this research was primarily provided by the Recycled Materials Resource Center. Supplemental contributions were provided by the Virginia Transportation Research Council of Virginia Department of Transportation and Geosynthetic Institute (GSI). The authors greatly appreciate all of the financial support. The conclusions and recommendations presented in this article are those of the authors and do not reflect the opinions and policies of the agencies who provided financial support.

Finansörler
Recycled Materials Resource Center

Belgeye Erişim

10.1680/jgein.19.00025

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Evaluation of recycled concrete aggregate backfill for geosynthetic-reinforced MSE walls",

abstract = "Mechanical and hydraulic properties of recycled concrete aggregate (RCA) were evaluated for use as backfill in mechanically stabilized earth (MSE) walls. Large-scale drained triaxial tests, direct shear tests and pullout tests were performed to obtain mechanical properties of RCA interacting with various geosynthetics. Long-term filtration (LTF) tests were performed to evaluate hydraulic conductivity of RCA-geotextile systems. Results showed that the RCA had an internal friction angle of 49°, which was within the typical range. The RCA-uniaxial geogrid had the highest interface friction angle of 36° - and the interface friction angles of RCA-biaxial geogrid, RCA-nonwoven geotextile, and RCA-woven geotextile were 32°, 26° and 22°, respectively. Reinforced RCA showed comparable pullout capacity to reinforced sand. No slippage was observed between the RCA and geotextiles or geogrids, and the failures occurred mainly due to rupture of the geotextiles and geogrids during the pullout test. Results of the LTF tests showed that, over a filtration period of 2500 h, the ratio of mean hydraulic conductivity of RCA only to that of RCA-nonwoven geotextile and RCA-woven geotextile systems remained between 0.91 and 3.2, suggesting that the clogging of the geotextiles with RCA was minimal.",

author = "A. Soleimanbeigi and Tanyu, \{B. F.\} and Aydilek, \{A. H.\} and P. Florio and A. Abbaspour and Dayioglu, \{A. Y.\} and Likos, \{W. J.\}",

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year = "2019",

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doi = "10.1680/jgein.19.00025",

language = "English",

volume = "26",

pages = "396--412",

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T1 - Evaluation of recycled concrete aggregate backfill for geosynthetic-reinforced MSE walls

AU - Soleimanbeigi, A.

AU - Tanyu, B. F.

AU - Aydilek, A. H.

AU - Florio, P.

AU - Abbaspour, A.

AU - Dayioglu, A. Y.

AU - Likos, W. J.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Mechanical and hydraulic properties of recycled concrete aggregate (RCA) were evaluated for use as backfill in mechanically stabilized earth (MSE) walls. Large-scale drained triaxial tests, direct shear tests and pullout tests were performed to obtain mechanical properties of RCA interacting with various geosynthetics. Long-term filtration (LTF) tests were performed to evaluate hydraulic conductivity of RCA-geotextile systems. Results showed that the RCA had an internal friction angle of 49°, which was within the typical range. The RCA-uniaxial geogrid had the highest interface friction angle of 36° - and the interface friction angles of RCA-biaxial geogrid, RCA-nonwoven geotextile, and RCA-woven geotextile were 32°, 26° and 22°, respectively. Reinforced RCA showed comparable pullout capacity to reinforced sand. No slippage was observed between the RCA and geotextiles or geogrids, and the failures occurred mainly due to rupture of the geotextiles and geogrids during the pullout test. Results of the LTF tests showed that, over a filtration period of 2500 h, the ratio of mean hydraulic conductivity of RCA only to that of RCA-nonwoven geotextile and RCA-woven geotextile systems remained between 0.91 and 3.2, suggesting that the clogging of the geotextiles with RCA was minimal.

AB - Mechanical and hydraulic properties of recycled concrete aggregate (RCA) were evaluated for use as backfill in mechanically stabilized earth (MSE) walls. Large-scale drained triaxial tests, direct shear tests and pullout tests were performed to obtain mechanical properties of RCA interacting with various geosynthetics. Long-term filtration (LTF) tests were performed to evaluate hydraulic conductivity of RCA-geotextile systems. Results showed that the RCA had an internal friction angle of 49°, which was within the typical range. The RCA-uniaxial geogrid had the highest interface friction angle of 36° - and the interface friction angles of RCA-biaxial geogrid, RCA-nonwoven geotextile, and RCA-woven geotextile were 32°, 26° and 22°, respectively. Reinforced RCA showed comparable pullout capacity to reinforced sand. No slippage was observed between the RCA and geotextiles or geogrids, and the failures occurred mainly due to rupture of the geotextiles and geogrids during the pullout test. Results of the LTF tests showed that, over a filtration period of 2500 h, the ratio of mean hydraulic conductivity of RCA only to that of RCA-nonwoven geotextile and RCA-woven geotextile systems remained between 0.91 and 3.2, suggesting that the clogging of the geotextiles with RCA was minimal.

UR - https://www.scopus.com/pages/publications/85071150823

U2 - 10.1680/jgein.19.00025

DO - 10.1680/jgein.19.00025

M3 - Article

AN - SCOPUS:85071150823

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EP - 412

JO - Geosynthetics International

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ER -

Evaluation of recycled concrete aggregate backfill for geosynthetic-reinforced MSE walls

Özet

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Finansman

Belgeye Erişim

Diğer Dosyalar ve Linkler

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