Resilient modulus characteristics of soil subgrade with geopolymer additive in peat

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Abstract

Resilient modulus characteristics of peat soil are generally very low with high potential of deformation and low bearing capacity. The efforts to improve the peat subgrade resilient modulus characteristics is required, one among them is by adding the geopolymer additive. Geopolymer was made as an alternative to replace portland cement binder in the concrete mix in order to promote environmentally friendly, low shrinkage value, low creep value, and fire resistant material. The use of geopolymer to improve the mechanical properties of peat as a road construction subgrade, hence it becomes important to identify the effect of geopolymer addition on the resilient modulus characteristics of peat soil. This study investigated the addition of 0% - 20% geopolymer content on peat soil derived from Ogan Komering Ilir, South Sumatera Province. Resilient modulus measurement was performed by using cyclic triaxial test to determine the resilience modulus model as a function of deviator stresses and radial stresses. The test results showed that an increase in radial stresses did not necessarily lead to an increase in modulus resilient, and on the contrary, an increase in deviator stresses led to a decrease in modulus resilient. The addition of geopolymer in peat soil provided an insignificant effect on the increase of resilient modulus value.

Original languageEnglish
Title of host publicationGreen Process, Material, and Energy
Subtitle of host publicationA Sustainable Solution for Climate Change - Proceedings of the 3rd International Conference on Engineering, Technology, and Industrial Application, ICETIA 2016
EditorsHari Prasetyo, Wisnu Setiawan, Fajar Suryawan, Munajat Tri Nugroho, Tri Widayatno, Nurul Hidayati, Eko Setiawan
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735415294
DOIs
Publication statusPublished - 15 Jun 2017
Event3rd International Conference on Engineering, Technology, and Industrial Application - Green Process, Material, and Energy: A Sustainable Solution for Climate Change, ICETIA 2016 - Surakarta, Indonesia
Duration: 7 Dec 20168 Dec 2016

Publication series

NameAIP Conference Proceedings
Volume1855
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Conference on Engineering, Technology, and Industrial Application - Green Process, Material, and Energy: A Sustainable Solution for Climate Change, ICETIA 2016
CountryIndonesia
CitySurakarta
Period7/12/168/12/16

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