Enzyme based soil stabilization for unpaved road construction

Renjith, R, Robert, D, Fuller, A, Setunge, S, O'Donnell, B and Nucifora, R 2017, 'Enzyme based soil stabilization for unpaved road construction', in Proceedings of the 6th International Conference of Euro Asia Civil Engineering (EACEF 2017), Seoul, South Korea, 22 -25 August 2017, pp. 1-10.


Document type: Conference Paper
Collection: Conference Papers

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Title Enzyme based soil stabilization for unpaved road construction
Author(s) Renjith, R
Robert, D
Fuller, A
Setunge, S
O'Donnell, B
Nucifora, R
Year 2017
Conference name EACEF 2017: Green Infrastructure for Future World
Conference location Seoul, South Korea
Conference dates 22 -25 August 2017
Proceedings title Proceedings of the 6th International Conference of Euro Asia Civil Engineering (EACEF 2017)
Publisher Hanyang University
Place of publication Seoul, South Korea
Start page 1
End page 10
Total pages 10
Abstract Enzymes as soil stabilizers have been successfully used in road construction in several countries for the past 30 years. However, research has shown that the successful application of these enzymes is case specific, emphasizing that enzyme performance is dependent on subgrade soil type, condition and the type of enzyme used as the stabilizer. A universal standard or a tool for road engineers to assess the performance of stabilized unbound pavements using well-established enzymes is not available to date. The research aims to produce a validated assessment tool which can be used to predict strength enhancement within a generalized statistical framework. The objective of the present study is to identify new materials for developing the assessment tool which supports enzyme based stabilization, as well as to identify the correct construction sequence for such new materials. A series of characterization tests were conducted on several soil types obtained from proposed construction sites. Having identified the suitable soil type to mix with the enzyme, a trial road construction has been performed to investigate the efficiency of the enzyme stabilization along with the correct construction sequence. The enzyme stabilization has showed significant improvement of the road performance as was evidenced from the test results which were based on site soil obtained before and after stabilization. The research will substantially benefit the road construction industry by not only replacing traditional construction methods with economical/reliable approaches, but also eliminating site specific tests required in current practice of enzyme based road construction.
Subjects Civil Geotechnical Engineering
Copyright notice Copyright © Author(s) under the Creative Commons Attribution License Attribution 4.0 International (CC BY 4.0)
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