Optimization of Hybrid – Polypropylene - Steel Fibre Reinforced Concrete (HPSFRC)

• Author(s): K. C. Nwachukwu ; U. C. Onwuegbuchulem ; F. K. Atulomah ; E. O. Ihemegbulem
• Paper ID: 1703519
• Page: 121-133
• Published Date: 22-06-2022
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 5 Issue 12 June-2022

Abstract

Sometimes, in order to produce superior concrete, more than one type of fibre is added to concrete in various mixture design with promising results. Hybrid Fiber Reinforced Concrete (HFRC) is a concrete in which more than one type of fibre is added to concrete in order to improve its general properties, especially compressive strength. This research work is aimed at using Scheffe’s Second Degree Model for six component mixtures, simply abbreviated as Scheffe’s (6,2) to optimize the compressive strength of Hybrid – Polypropylene - Steel Fibre Reinforced Concrete (HPSFRC).Firstly, the Scheffe’s second degree model for six component mixture was introduced and through the use of Scheffe’s Simplex optimization method, the compressive strengths of HPSFRC were obtained for different mix proportions. The mix proportion of Polypropylene - Steel was in 50% - 50% ratio. Control experiments were also carried out, and the compressive strengths evaluated. By using the Student’s t-test statistics, the adequacy of the model was confirmed .The optimum attainable compressive strength of HPSFRC was 57.65 MPa . This maximum value is higher than the minimum value specified by the American Concrete Institute (ACI), as 20 MPa for good concrete and also the minimum value specified by ASTM C 39 and ASTM C 469, as 30.75 for high performance concrete . Thus, the HPSFRC compressive strength value can sustain construction of light-weight and heavy-weight structures such as Bridges, Airports, maintenance hangars, access roads etc at the best possible economic and safety advantages.

Keywords

HPSFRC, Scheffe’s (6,2) Optimization,Model, Compressive Strength, Mixture Design

Citations

IRE Journals:
K. C. Nwachukwu , U. C. Onwuegbuchulem , F. K. Atulomah , E. O. Ihemegbulem "Optimization of Hybrid – Polypropylene - Steel Fibre Reinforced Concrete (HPSFRC)" Iconic Research And Engineering Journals Volume 5 Issue 12 2022 Page 121-133

IEEE:
K. C. Nwachukwu , U. C. Onwuegbuchulem , F. K. Atulomah , E. O. Ihemegbulem "Optimization of Hybrid – Polypropylene - Steel Fibre Reinforced Concrete (HPSFRC)" Iconic Research And Engineering Journals, 5(12)