Assessing the impact of substituting hypo sludge (paper pulp) in cement and introducing natural fiber in the form of human hair to enhance compressive strength in concrete
Source abstract
Abstract
Abstract This study investigates the impact of incorporating hypo sludge (paper pulp) and human hair fiber (HHF) into M25 grade concrete to enhance its compressive strength. The research evaluates the effect of 30 % hypo sludge in cement and introducing 2 % HHF, comparing the results with conventional M25 concrete. After 28 days, compressive strength tests revealed that the modified concrete containing 30 % hypo sludge and 2 % HHF achieved a significantly higher average compressive strength of 32.91 N/mm2, compared to 26.08 N/mm2 for conventional concrete. The statistical analysis, including an independent samples t-test, indicated no significant variance (p = 0.893) between the samples, confirming the reliability of the results. Group statistics showed consistent performance with a standard deviation of 1.67 for the modified concrete. A Bayesian Factor Test, using the Rouder method and assuming unequal variance, revealed a mean difference of 6.8289 N/mm2 with a pooled standard error of 0.53572, yielding a Bayesian factor of 0.000. This provides strong evidence against the null hypothesis, specifying significant improvement in compressive strength. ANOVA confirmed a statistically significant difference in compressive strength between the groups (F = 162.489, p = 0.000). This study highlights the potential of these novel materials for eco-friendly construction applications, providing a promising alternative to conventional methods.
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Research context
OpenAlex topics: Natural Fiber Reinforced Composites · Innovations in Concrete and Construction Materials · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, Saveetha School of Engineering , Saveetha Institute of Medical and Technical Sciences , Chennai , Tamil Nadu , India
Department of Civil Engineering , Christian College of Engineering and Technology , Oddanchatram , Dindigul , Tamil Nadu , India
Department of Civil Engineering , Karpagam College of Engineering , Coimbatore , 641032 , Tamil Nadu , India
Department of Civil Engineering , NPR College of Engineering and Technology , Dindigul , Tamil Nadu , India
Department of Civil Engineering , St. Peter’s Institute of Higher Education and Research , Chennai , Tamil Nadu , India
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