A Comparative Evaluation of Bio Based and Industrial Additives Based Concrete Materials as Carbon Neutral Concrete

The construction sector significantly contributes to global CO2 emissions due to high Portland cement usage. This study comparatively analyzed bio based RHA and industrial GGBS additives as partial cement replacements at 10, 20, and 30 . Concrete samples were tested for mechanical compressive, split tensile, flexural , durability water absorption, porosity, UPV , workability slump, compact ing factor , and environmental CO2 emissions, embodied energy performance over 7, 14, 28, and 56 days. The control mix showed the highest 28 day strengths 32MPa compressive, 3.1MPa tensile, and 4.2MPa flexural. Bio based B30 and industrial I30 mixes showed gradual reductions, with compressive strengths of 25MPa and 27MPa, tensile strengths of 2.5MPa and 2.7MPa, and flexural strengths of 3.5MPa and 3.6MPa. Durability tests indicated slight increases in water absorption 6.2 and porosity 14 , with UPV confirming good quality. Workability decreased slightly but remained practical, while 30 replacements reduced CO2 emissions and embodied energy by 30 . Overall, 10–20 replacement offered an optimal balance between performance and sustainability. Manisha | Er. Janardan Tiwari "A Comparative Evaluation of Bio Based and Industrial Additives Based Concrete Materials as Carbon Neutral Concrete" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-9 | Issue-5 , October 2025, URL: https://www.ijtsrd.com/papers/ijtsrd97541.pdf Paper URL: https://www.ijtsrd.com/engineering/other/97541/a-comparative-evaluation-of-bio-based-and-industrial-additives-based-concrete-materials-as-carbon-neutral-concrete/manisha