Application of Gene Expression Programming to Evaluate Strength Characteristics of Hydrated-Lime-Activated Rice Husk Ash-Treated Expansive Soil
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Applied Computational Intelligence and Soft Computing
Abstract
Gene expression programming has been applied in this work to predict the California bearing ratio (CBR), unconfined
compressive strength (UCS), and resistance value (R value or Rvalue) of expansive soil treated with an improved composites of rice
husk ash. Pavement foundations suffer failures due to poor design and construction, poor materials handling and utilization, and
management lapses. -e evolution of sustainable green materials and optimization and soft computing techniques have been
deployed to improve on the deficiencies being suffered in the abovementioned areas of design and construction engineering. In
this work, expansive soil classified as A-7-6 group soil was treated with hydrated-lime activated rice husk ash (HARHA) in an
incremental proportion to produce 121 datasets, which were used to predict the behavior of the soil’s strength parameters utilizing
the mutative and evolutionary algorithms of GEP. -e input parameters were HARHA, liquid limit (wL), (plastic limit (wP),
plasticity index (IP), optimum moisture content (wOMC), clay activity (AC), and (maximum dry density (δmax) while CBR, UCS,
and R value were the output parameters. A multiple linear regression (MLR) was also conducted on the datasets in addition to GEP
to serve as a check mechanism. At the end of the computing and iterations, MLR and GEP optimization methods proposed three
equations corresponding to the output parameters of the work. -e responses validation on the predicted models shows a good
correlation above 0.9 and a great performance index. -e predicted models’ performance has shown that GEP soft computing has
predicted models that can be used in the design of CBR, UCS, and R value for soils being used as foundation materials and being
treated with admixtures as a binding component.
Description
Keywords
Gene Expression Programming, Hydrated-Lime-Activated, Rice Husk Ash-Treated Expansive Soil
Citation
Onyelowe, K. C., Jalal, F. E., Onyia, M. E., Onuoha, I. C., & Alaneme, G. U. (2021). Application of gene expression programming to evaluate strength characteristics of hydrated-lime-activated rice husk ash-treated expansive soil. Applied Computational Intelligence and Soft Computing, 2021. https://doi.org/10.1155/2021/6686347