Evaluation of Mechanical and Permeability Characteristics of Microfiber-Reinforced Recycled Aggregate Concrete with Different Potential Waste Mineral Admixtures
Abstract
:1. Introduction
2. Research Significance
3. Experimental Program
3.1. Details of Materials
3.1.1. Binders
3.1.2. Aggregates
3.1.3. Glass Fibers
3.1.4. Superplasticizer and Water
3.2. Composition of All Concrete Mixtures
3.3. Preparation of Specimens for Testing
3.3.1. Compression Testing
3.3.2. Modulus of Elasticity Testing
3.3.3. Splitting Tensile Testing
3.3.4. Bending Testing
3.3.5. Water Absorption Capacity Testing
3.3.6. Chloride Penetration Testing
4. Results of Testing and Discussion
4.1. Workability
4.2. Compressive Strength
4.3. Modulus of Elasticity
4.4. Splitting Tensile Strength
4.5. Modulus of Rupture
4.6. Water Absorption
4.7. Chloride Penetration
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
BFS | Blast furnace steel slag |
CDW | Construction and demolition waste |
FA | Fly ash |
PRAC | Plain recycled aggregate concrete |
RA | Recycled aggregate |
RCA | Recycled coarse aggregate |
RAC | Recycled aggregate concrete |
RHA | Rice husk ash |
FRRAC | Fiber-reinforced recycled aggregate concrete |
GFRRAC | Glass fiber-reinforced recycled aggregate concrete |
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Property | Cement | MS | FA | BFS | RHA |
---|---|---|---|---|---|
CaO (%) | 64.3 | 0.35 | 4.2 | 43.4 | 1.8 |
SiO2 (%) | 20.4 | 98.3 | 57.1 | 36.2 | 90.5 |
Al2O3 (%) | 7.1 | - | 29.7 | 14.6 | 0.33 |
MgO (%) | 2.8 | - | - | - | 0.62 |
Fe2O3 (%) | 3.4 | - | 11.9 | 1 | 0.41 |
SO3 (%) | 1.3 | - | 0.24 | - | |
Loss of ignition (800 °C) | 1.1 | 0.8 | 4.61 | 3.22 | 5.41 |
Specific-surface area (m2/kg) | 365 | 27,500 | 305 | 341 | 368 |
Sp.gravity | 3.13 | 2.22 | 2.44 | 2.94 | 2.14 |
Aggregate Type | Source | Water Absorption (%) | Bulk Density (kg/m3) | Specific Gravity |
---|---|---|---|---|
Fine aggregate | Lawrancepur siliceous sand | 0.78 | 1625 | 2.68 |
NCA | Crushed limestone | 0.67 | 1547 | 2.67 |
RCA | Normal strength concrete samples | 5.34 | 1375 | 2.37 |
Mix Nomenclature | Fiber | Mineral Admixture | RCA | Superplasticizer |
---|---|---|---|---|
CON | x | x | x | x |
PRAC | x | x | ✓ | x |
PRAC-10MS | x | 10% MS | ✓ | ✓ |
PRAC-30BFS | x | 30% BFS | ✓ | x |
PRAC-20FA | x | 20% FA | ✓ | x |
PRAC-15RHA | x | 15% RHA | ✓ | x |
GFRRAC | 1% Microglass fiber | No | ✓ | ✓ |
GFRRAC-10MS | 1% Microglass fiber | 10% MS | ✓ | ✓ |
GFRRAC-30BFS | 1% Microglass fiber | 30% BFS | ✓ | ✓ |
GFRRAC-20FA | 1% Microglass fiber | 20% FA | ✓ | ✓ |
GFRRAC-15RHA | 1% Microglass fiber | 15% RHA | ✓ | ✓ |
Mix Nomenclature | Type I Cement (kg/m3) | MS (kg/m3) | BFS (kg/m3) | FA (kg/m3) | RHA (kg/m3) | NCA (kg/m3) | RCA (kg/m3) | Fine Aggregate (kg/m3) | Water (kg/m3) | Fiber (kg/m3) | Superplasticizer (kg/m3) |
---|---|---|---|---|---|---|---|---|---|---|---|
CON | 565 | x | x | x | x | 820 | x | 664 | 215 | 0 | 0 |
PRAC | 565 | x | x | x | x | x | 720 | 664 | 215 | 0 | 0 |
PRAC-10MS | 509 | 42 | x | x | x | x | 720 | 664 | 215 | 0 | 2.65 |
PRAC-30BFS | 396 | x | 159 | x | x | x | 720 | 664 | 215 | 0 | 0 |
PRAC-20FA | 452 | x | x | 88 | x | x | 720 | 664 | 215 | 0 | 0 |
PRAC-15RHA | 480 | x | x | x | 58 | x | 720 | 664 | 215 | 0 | 0 |
GFRRAC | 565 | x | x | x | x | x | 707 | 651 | 215 | 26 | 3.89 |
GFRRAC-10MS | 509 | 42 | x | x | x | x | 707 | 651 | 215 | 26 | 5.52 |
GFRRAC-30BFS | 396 | x | 159 | x | x | x | 707 | 651 | 215 | 26 | 3.17 |
GFRRAC-20FA | 452 | x | x | 88 | x | x | 707 | 651 | 215 | 26 | 3.46 |
GFRRAC-15RHA | 480 | x | x | x | 58 | x | 707 | 651 | 215 | 26 | 3.95 |
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Alyousef, R.; Ali, B.; Mohammed, A.; Kurda, R.; Alabduljabbar, H.; Riaz, S. Evaluation of Mechanical and Permeability Characteristics of Microfiber-Reinforced Recycled Aggregate Concrete with Different Potential Waste Mineral Admixtures. Materials 2021, 14, 5933. https://doi.org/10.3390/ma14205933
Alyousef R, Ali B, Mohammed A, Kurda R, Alabduljabbar H, Riaz S. Evaluation of Mechanical and Permeability Characteristics of Microfiber-Reinforced Recycled Aggregate Concrete with Different Potential Waste Mineral Admixtures. Materials. 2021; 14(20):5933. https://doi.org/10.3390/ma14205933
Chicago/Turabian StyleAlyousef, Rayed, Babar Ali, Ahmed Mohammed, Rawaz Kurda, Hisham Alabduljabbar, and Sobia Riaz. 2021. "Evaluation of Mechanical and Permeability Characteristics of Microfiber-Reinforced Recycled Aggregate Concrete with Different Potential Waste Mineral Admixtures" Materials 14, no. 20: 5933. https://doi.org/10.3390/ma14205933