Feasibility of using bio-enzyme as an admixture in reactive powder concrete

Utilizing bio-based elements as cement additives has a significant impact on the production of extremely durable and sustainable concrete composites. In the present research work, the effect of a bio-enzyme (Terrazyme) on the strength, durability, and microstructure of RPC was researched at various...

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Bibliographic Details
Published in:Materials research express 2023-04, Vol.10 (4), p.45502
Main Authors: Raja, MA, Judes Sujatha, S
Format: Article
Language:English
Subjects:
Additives
Admixtures
bio-enzyme
Compressive strength
Concrete properties
Durability
Enzymes
microstructure
Penetration
Penetration resistance
Permeability
Prolongation
Reduction
RPC
shrinkage
strength
Transport properties
Ultra high performance concrete
Water absorption
water-steam-autoclave curing
Waterproofing
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Summary:Utilizing bio-based elements as cement additives has a significant impact on the production of extremely durable and sustainable concrete composites. In the present research work, the effect of a bio-enzyme (Terrazyme) on the strength, durability, and microstructure of RPC was researched at various proportions of Terrazyme (TZ) as binder replacement (0, 0.5, 1, 1.5, 2, and 2.5%). The migration of water and transport properties of concrete are accessed through measurement of the water absorption and gas permeability. Results show that the use of TZ in RPC slightly reduced the compressive strength, and the reduction was more significant at high replacement levels when subjected to water curing. A significant reduction in the permeability of RPC with a relatively low permeability coefficient is obtained even at higher dosages of TZ in autoclaved RPC specimens with greater mechanical strength. In addition, greater chloride penetration with the prolongation of ages is obtained. The inclusion of TZ can not only enhance the waterproofing and penetration resistance of RPC but also achieve economic and ecological benefits.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/accb30