| Autor: |
Chowdary, Bhavita, V, Ramana Murty, Pillai, Rakesh J. |
| Zdroj: |
Transportation Infrastructure Geotechnology; 20220101, Issue: Preprints p1-16, 16p |
| Abstrakt: |
The geopolymer binder has been proven successful over pozzolanic binders in stabilizing soft soils by offering the best engineering properties along with exceptional performance in sustainability. Through a series of experimental tests, the efficacy of fiber-reinforced slag geopolymer binder in stabilizing soft clay was investigated. The focus of the experimental program is to evaluate the strength performance of soft clay stabilized with slag geopolymer binder with and without fibers. The variables adopted in this investigation are alkali to binder ratio, binder content, and fiber dosage. Considering the multiple parameters involved in the unreinforced treated specimens, the test results were plotted using MATLAB after optimizing the experimental results using response surface method. Regression equations were obtained for the variation of unconfined compressive strength (UCS) and flexural strength with alkali to binder ratio and binder content. The error was found to be in the acceptable range. Stabilization of soft clay with fiber-reinforced geopolymer binder has improved both UCS and flexural strength properties when compared against unreinforced geopolymer stabilized soft clay. Based on the findings of this experimental study, it can be noticed that polypropylene fiber-reinforced slag geopolymer binder stabilized soft soil with an A/B ratio of 1.0 and at 30% binder content with a fiber dosage of 0.5% by dry weight of soil exhibited peak strength values. According to the findings of this study, fiber-reinforced slag geopolymer can be effectively utilized as a sustainable alternative to the conventional stabilization materials or binders for improving the engineering properties of soft clays. |
| Databáze: |
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