Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture
The utilization of waste fly ash in road construction is primarily confined to its use in embankment filling or as a stabilizer when combined with lime and cement. Its application in structural pavement layers, such as the base and subbase, faces a challenge due to the high volume of fine particles,...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Journal of Composites Science |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-477X/7/11/459 |
| _version_ | 1797458790833979392 |
|---|---|
| author | Sanjeeb Kumar Mohanty Dipti Ranjan Biswal Benu Gopal Mohapatra Brundaban Beriha Ramachandra Pradhan Harekrushna Sutar |
| author_facet | Sanjeeb Kumar Mohanty Dipti Ranjan Biswal Benu Gopal Mohapatra Brundaban Beriha Ramachandra Pradhan Harekrushna Sutar |
| author_sort | Sanjeeb Kumar Mohanty |
| collection | DOAJ |
| description | The utilization of waste fly ash in road construction is primarily confined to its use in embankment filling or as a stabilizer when combined with lime and cement. Its application in structural pavement layers, such as the base and subbase, faces a challenge due to the high volume of fine particles, which renders it brittle when stabilized. In this study, fly ash was blended with stone dust and aggregated to enhance its gradation. Subsequently, it was stabilized with cement to bolster its strength, rendering it suitable for pavement use. Additionally, polypropylene (PP) fibers were introduced to mitigate the brittleness of the mixture. An extensive experimental investigation was conducted to assess the strength and stiffness properties, including compressive strength, indirect tensile strength, flexural strength, cyclic indirect tensile modulus, and flexural modulus of fiber-reinforced cement-stabilized mixtures of fly ash, stone dust, and aggregate. The experimental results reveal that the addition of PP fibers up to 0.25 wt.% enhances compressive strength, but any further increase in fiber content leads to a reduction in strength. However, indirect tensile strength and flexural strength show improvement, with an increase in fiber percentage up to 0.5 wt.%. It was observed that cement content plays a dominant role in stabilizing these materials. Appropriate relationships have been established between strength and modulus parameters for stabilized mixtures. Based on the strength and stiffness study, a combination of 70% fly ash and 30% stone dust aggregate with 6% cement can be considered for the base layer. Regarding the behavior of indirect tensile strength and flexural strength, an optimum fiber percentage of 0.35% is recommended. |
| first_indexed | 2024-03-09T16:43:12Z |
| format | Article |
| id | doaj.art-9aabcefa9ae440458ec6e2b01ccf1e3c |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T16:43:12Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-9aabcefa9ae440458ec6e2b01ccf1e3c2023-11-24T14:49:52ZengMDPI AGJournal of Composites Science2504-477X2023-11-0171145910.3390/jcs7110459Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate MixtureSanjeeb Kumar Mohanty0Dipti Ranjan Biswal1Benu Gopal Mohapatra2Brundaban Beriha3Ramachandra Pradhan4Harekrushna Sutar5School of Civil Engineering, KIIT Deemed to be University, Bhubaneswar 751024, Odisha, IndiaSchool of Civil Engineering, KIIT Deemed to be University, Bhubaneswar 751024, Odisha, IndiaSchool of Civil Engineering, KIIT Deemed to be University, Bhubaneswar 751024, Odisha, IndiaSchool of Civil Engineering, KIIT Deemed to be University, Bhubaneswar 751024, Odisha, IndiaSchool of Civil Engineering, KIIT Deemed to be University, Bhubaneswar 751024, Odisha, IndiaDepartment of Chemical Engineering, Indira Gandhi Institute of Technology, Sarang 759146, Odisha, IndiaThe utilization of waste fly ash in road construction is primarily confined to its use in embankment filling or as a stabilizer when combined with lime and cement. Its application in structural pavement layers, such as the base and subbase, faces a challenge due to the high volume of fine particles, which renders it brittle when stabilized. In this study, fly ash was blended with stone dust and aggregated to enhance its gradation. Subsequently, it was stabilized with cement to bolster its strength, rendering it suitable for pavement use. Additionally, polypropylene (PP) fibers were introduced to mitigate the brittleness of the mixture. An extensive experimental investigation was conducted to assess the strength and stiffness properties, including compressive strength, indirect tensile strength, flexural strength, cyclic indirect tensile modulus, and flexural modulus of fiber-reinforced cement-stabilized mixtures of fly ash, stone dust, and aggregate. The experimental results reveal that the addition of PP fibers up to 0.25 wt.% enhances compressive strength, but any further increase in fiber content leads to a reduction in strength. However, indirect tensile strength and flexural strength show improvement, with an increase in fiber percentage up to 0.5 wt.%. It was observed that cement content plays a dominant role in stabilizing these materials. Appropriate relationships have been established between strength and modulus parameters for stabilized mixtures. Based on the strength and stiffness study, a combination of 70% fly ash and 30% stone dust aggregate with 6% cement can be considered for the base layer. Regarding the behavior of indirect tensile strength and flexural strength, an optimum fiber percentage of 0.35% is recommended.https://www.mdpi.com/2504-477X/7/11/459stabilized fly ashfiber reinforcementcement stabilizationindirect tensile modulusflexural modulusoptimum fiber percentage |
| spellingShingle | Sanjeeb Kumar Mohanty Dipti Ranjan Biswal Benu Gopal Mohapatra Brundaban Beriha Ramachandra Pradhan Harekrushna Sutar Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture Journal of Composites Science stabilized fly ash fiber reinforcement cement stabilization indirect tensile modulus flexural modulus optimum fiber percentage |
| title | Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture |
| title_full | Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture |
| title_fullStr | Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture |
| title_full_unstemmed | Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture |
| title_short | Strength and Stiffness Evaluation of a Fiber-Reinforced Cement-Stabilized Fly Ash Stone Dust Aggregate Mixture |
| title_sort | strength and stiffness evaluation of a fiber reinforced cement stabilized fly ash stone dust aggregate mixture |
| topic | stabilized fly ash fiber reinforcement cement stabilization indirect tensile modulus flexural modulus optimum fiber percentage |
| url | https://www.mdpi.com/2504-477X/7/11/459 |
| work_keys_str_mv | AT sanjeebkumarmohanty strengthandstiffnessevaluationofafiberreinforcedcementstabilizedflyashstonedustaggregatemixture AT diptiranjanbiswal strengthandstiffnessevaluationofafiberreinforcedcementstabilizedflyashstonedustaggregatemixture AT benugopalmohapatra strengthandstiffnessevaluationofafiberreinforcedcementstabilizedflyashstonedustaggregatemixture AT brundabanberiha strengthandstiffnessevaluationofafiberreinforcedcementstabilizedflyashstonedustaggregatemixture AT ramachandrapradhan strengthandstiffnessevaluationofafiberreinforcedcementstabilizedflyashstonedustaggregatemixture AT harekrushnasutar strengthandstiffnessevaluationofafiberreinforcedcementstabilizedflyashstonedustaggregatemixture |