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
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Vijayan Selvam
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Tholkapiyan Muniyandi
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.
Acknowledgments
The author would like to thank Tholkapiyan Muniyandi for his valuable guidance and support throughout the research process.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: Author VS, and TM is responsible for data gathering, experimental research, software analysis, and paper writing. AR, SKK, HA, and HB was engaged in the manuscript’s development, supervision, software analysis, and critical evaluation.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: The raw data can be obtained on request from the corresponding author.
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Articles in the same Issue
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- 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
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Articles in the same Issue
- Frontmatter
- Bleaching
- The effect of xylanase on the fine structure of a bleached kraft softwood pulp
- Mechanical Pulping
- Development of handsheet mechanical properties linked to fibre distributions in two-stage low consistency refining of high yield pulp
- Paper Technology
- Analysis of finger ridges in paper manufacturing and development of a qualitative model of their formation
- Paper Physics
- Microfibrillated cellulose coatings for biodegradable electronics
- Paper Chemistry
- Preparation of CMC-β-CD-sulfaguanidine and its application for protection of paper
- Drying characteristics and numerical simulation of tissue paper
- Hemicellulose as an additive in papermaking
- Coating
- Synthesis of carboxymethyl cellulose-β∼cyclodextrin-coated sulfaguanidine and its enhanced antimicrobial efficacy for paper protection
- Integrating barrier chemicals into coating systems for optimized white top testliner performance
- Printing
- Quantifying optical and mechanical contributions to dot gain
- Packaging
- The impact of cellulosic pulps on thermoforming process: effects on formation time and drainage efficiency
- Environmental Impact
- 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
- Recycling
- Atomization numerical simulation of high solids content bamboo pulping black liquor based on VOF model
- A review of the fractionation and properties of lignin derived from pulping black liquor and lignocellulose pretreatment
- Lignin
- In-situ construct dynamic bonds between lignin and PBAT by epoxidized soybean oil to improve interfacial compatibility: processing, characterization, and antibacterial activity for food packaging
- Separation of high-yield and high-purity lignin from Elm wood using ternary deep eutectic solvents
