TY - JOUR
T1 - Effect of Single and Hybrid Fibers on Mechanical Properties of High-Strength Self-Compacting Concrete Incorporating 100% Waste Aggregate
AU - Zamani, Amir A. A.
AU - Ahmadi, Masoud
AU - Dalvand, Ahmad
AU - Aslani, Farhad
PY - 2023/1/1
Y1 - 2023/1/1
N2 - In this research, a combined experimental and analytical program was conducted to study the effect of the single and hybrid fibers [polyvinyl alcohol (PVA) and steel] on the material characteristics of the sustainable high-strength self-compacting concrete incorporating a 100% replacement ratio of aggregate with granite industry by-product. The experiment includes 13 mixture compositions to understand mechanical and impact properties. The analytical investigation comprises statistical analysis of impact behavior, optimized mix compositions, and regression analysis between mechanical properties. The sustainable cementitious composites were made with 100% recycled fine aggregate, different volume fractions of PVA and steel fibers (0%, 0.5%, 1.0%, 1.5%, and 2.0%), and a constant proportion of Class F fly ash as partial replacement of cement. Mechanical properties of hardened concrete were studied in terms of compressive strength, splitting tensile strength, and three-point flexural tests. Specimens were subjected to repeated drop-weight, ultrasonic pulse velocity, and water absorption tests to determine impact resistance, integrity, and durability. It was discovered that incorporating fibers into fully recycled fine-aggregate concrete improves the material's properties, which was found to be highly dependent on the use of single or hybrid fibers, their types, and their content. The energy-absorbing and energy-dissipating capability of samples was improved remarkably with the addition of fiber volume dosage. The best efficiency was for the mixture with 1.5% hooked-end fibers according to the higher values of mechanical and impact properties and the lower cost.
AB - In this research, a combined experimental and analytical program was conducted to study the effect of the single and hybrid fibers [polyvinyl alcohol (PVA) and steel] on the material characteristics of the sustainable high-strength self-compacting concrete incorporating a 100% replacement ratio of aggregate with granite industry by-product. The experiment includes 13 mixture compositions to understand mechanical and impact properties. The analytical investigation comprises statistical analysis of impact behavior, optimized mix compositions, and regression analysis between mechanical properties. The sustainable cementitious composites were made with 100% recycled fine aggregate, different volume fractions of PVA and steel fibers (0%, 0.5%, 1.0%, 1.5%, and 2.0%), and a constant proportion of Class F fly ash as partial replacement of cement. Mechanical properties of hardened concrete were studied in terms of compressive strength, splitting tensile strength, and three-point flexural tests. Specimens were subjected to repeated drop-weight, ultrasonic pulse velocity, and water absorption tests to determine impact resistance, integrity, and durability. It was discovered that incorporating fibers into fully recycled fine-aggregate concrete improves the material's properties, which was found to be highly dependent on the use of single or hybrid fibers, their types, and their content. The energy-absorbing and energy-dissipating capability of samples was improved remarkably with the addition of fiber volume dosage. The best efficiency was for the mixture with 1.5% hooked-end fibers according to the higher values of mechanical and impact properties and the lower cost.
KW - Granite waste
KW - Mechanical properties
KW - Impact
KW - Steel fiber
KW - Polyvinyl alcohol (PVA)
KW - GRANITE CUTTING WASTE
KW - IMPACT RESISTANCE
KW - STEEL FIBER
KW - STATISTICAL VARIATIONS
KW - POLYPROPYLENE FIBER
KW - RECYCLED STEEL
KW - BEHAVIOR
KW - PERFORMANCE
KW - DURABILITY
KW - OPTIMIZATION
UR - http://www.scopus.com/inward/record.url?scp=85140401286&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)MT.1943-5533.0004528
DO - 10.1061/(ASCE)MT.1943-5533.0004528
M3 - Article
SN - 0899-1561
VL - 35
JO - Journal of Materials in Civil Engineering
JF - Journal of Materials in Civil Engineering
IS - 1
M1 - 04022365
ER -