International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 09 | Sep 2025
p-ISSN: 2395-0072
www.irjet.net
A STUDY ON EXPERIMENTAL INVESTIGATION ON THE PROPERTIES OF M30 GRADE CONCRETE USING METAKAOLIN AND FLYASH MUNGARA VENKATA NAGA SAI BHARGAV1, Dr. D. SREEHARI RAO2 1 PG Student, Department of Civil Engineering, Sri Venkateswara University College of Engineering, Tirupati,
Andhra Pradesh, India. 2 Asst. Professor, Department of Civil Engineering Sri Venkateswara University College of Engineering, Tirupati, Andhra Pradesh, India. ---------------------------------------------------------------------***------------------------------------------------------------------Abstract - Amongst all of the construction substances which are available for construction, we understand that concrete
is an extensively used creation fabric for building of various civil engineering structures. Concrete will supply higher durability and also its costs during production in addition to maintenance are very low when in comparison to different production substances. So that it will maintain its properly filling capacity, non-block glide and homogeneity. as a consequence, restrict high cement content which could raise cost as well as cause temperature increase throughout hydration and probably affect other traits like creep and shrinkage, subsequently giant quantities of additives are typically Metakaolin as a partial replacement for cement in concrete, aiming to enhance housing quality and reduce heat generation. Various admixtures are known to improve concrete’s strength and workability, with Metakaolin standing out due to its distinct advantages. It significantly improves durability and resistance against chloride and sulphate attacks, freezing-thawing cycles, alkali-silica reactions, and frost damage. Additionally, Metakaolin enhances compressive strength, reduces permeability and bleeding, and strengthens the interfacial transition zone (ITZ), eliminating its typical weaknesses. In this research, concrete mixes incorporating 5%, 10%, 15%, and 20% Metakaolin were evaluated to determine optimal performance. At the optimal level of 15% Metakaolin, further cement replacement was done using fly ash at 10%, 20%, and 30% by weight. The hardened properties of these mixes were tested for compressive strength at 7, 28, 56, and 90 days, while split tensile and flexural strength were measured at 28 days.
Key Words: Concrete, Metakaolin, Fly ash, compressive strength, split tensile strength, flexural strength INTRODUCTION Concrete has been utilized in constructing creation because ancient instances, together with Greece and Rome, but the sector is confronted with sustainability issues from immoderate usage of virgin materials and cement's high greenhouse gas emissions. With a growth in construction interest comes extended call for concrete, a ubiquitous aspect in homes, highways, bridges, and lots greater. To address this, novel types of concrete, such as excessive-strength and self-compacting, have emerged to enhance great and sustainability.one of the most promising solutions is the usage of waste materials for partial or overall substitute of conventional aggregates or cement in concrete, those wastes no longer only minimize environmental footprints however also improve the power, durability, and workability of concrete. alternative of cement with supplementary cementing materials (SCMs) has the capacity to notably lessen CO₂ emissions and enhance concrete characteristics. The growing utility of business via-merchandise in concrete presents a green alternative while minimizing landfill disposal and natural resource consumption. The elevated use of Portland cement in developing international locations bills for a huge proportion of CO₂ emissions, especially due to the burning of fossil fuels throughout cement manufacturing. To counter this, pozzolanas along with Metakaolin are being considered as opportunity substances to update a part of the cement. Metakaolin, that is crafted from thermally activated kaolin clay, reacts with calcium hydroxide during cement hydration to boom power and sturdiness. Its utility no longer simplest decreases cement utilization and CO₂ emissions but additionally prolongs shape life.
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