International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 11 | Nov 2025
p-ISSN: 2395-0072
www.irjet.net
Study on the Behaviour of M25 grade Concrete under Laboratory and RMC mix conditions TEGACHARLA VENKATA RATNAM [1], I.V. RAMANA REDDY [2] 1PG Student, Dept. of Civil Engineering, SV University College of Engineering, Tirupati,
Andhra Pradesh
India.
2Professor, Dept. of Civil Engineering, SV University College of Engineering, Tirupati,
Andhra Pradesh, India. ---------------------------------------------------------------------***---------------------------------------------------------------------Abstract: Concrete’s versatility, durability, and cost-effectiveness, it as the most widely used construction material globally. It is typically a composite mixture of fine aggregates (such as sand), coarse aggregates (like gravel or crushed stone), and a binding paste made from water and cement often Ordinary Portland cement (OPC). Admixtures are frequently added to enhance specific properties. A proper understanding of concrete fundamentals and an optimized mix design are essential for achieving the desired strength, workability, and durability, while also maintaining cost efficiency and minimizing material waste. This experimental study focuses on evaluating the strength characteristics of M25 grade concrete produced in both laboratory and site environments. Given that site conditions such as exposure to varying temperatures, curing methods, and casting durations differ significantly from controlled laboratory conditions, this investigation aims to assess whether laboratory-tested concrete strength translates effectively to real-world site performance. The study further examines how concrete strength varies over time (0h, 1h, and 2h) through slump tests conducted at 30-minute intervals for simulate site conditions, both with and without the addition of admixtures. Compressive strength is evaluated for 7, 28, and 90-day cured specimens.
Keywords: Concrete Mix Design, M25 Grade Concrete, Admixture, Compressive Strength, Slump Test. 1 INTRODUCTION: The study investigates overall performance of concrete depends not only on the mix design but also on site-specific factors such as mixing methods, placing techniques, and curing conditions. Laboratory-mixed concrete is prepared under controlled conditions using standardized equipment, which allows precise control over mix proportions and uniform mixing. However, small-scale laboratory mixers may not always replicate the mixing efficiency of commercial Ready-Mix Concrete (RMC) plants. RMC benefits from mechanized, large-capacity mixers that generally provide more uniform and consistent mixing, potentially resulting in improved workability and strength. Despite these advantages, site-specific factors such as transportation delays, temperature fluctuations, and curing practices can affect the strength development and performance of RMC on-site. Comparing the behaviour of M25 grade concrete produced in laboratory and RMC environments is essential to identify discrepancies in strength, workability, and durability. Such evaluation enables better understanding and optimization of mix designs and handling procedures, ensuring reliable and consistent concrete quality in real-world construction projects.
2 Review of Literature 2Er.Khalil Rahman Farhat and Er. Masood Jamali (2022)., This research paper gives the Effect of Admixture on Properties of
Concrete. Concrete is a man or machine-made construction material, and that has more usage in the construction field, it is necessary to make construction secure and safe for making high strength concrete. 3Izabela Skrzypczak, Agnieszka Le´sniak, Piotr Ochab, Monika Górka, Wanda Kokoszka and Anna Sikora (2021)., This study shows RMC concrete quality performed for concrete mix and hardened concrete, whereas individual analysis of the results allows the laboratory quality system to be improved. 6S. Manikandan and P. Jaya Karthik Reddy (2022)., Explored Artificial Intelligence (AI) in concrete quality control. By using sensors to analyse water-cement ratio and mix proportions, their approach reduces manual labour, cost, and time while improving concrete quality. 4Ishfaq Bashir Wani, Dr. R. Venkata Krishnaiah (2022)., This paper shows the behaviour of high strength concrete addition of super plasticizer, stone dust and laboratory investigation. High- grade strength Concrete is mostly used for various applications in the construction of concrete structures. 5Prashant M. Dhamanage and V. Nagendra (2020)., examined high strength concrete using mineral admixtures. Their findings suggest that partial cement replacement enhances workability, strength and making it suitable for specialized structures. 1Akoba A.S, Phulari R.C, Kembhavi S.B(2020)., This study shows Materials scientists, substances named admixtures. developed Eco and Crack-Free High-performance concrete incorporating recycled recycled (Eco-HPC), materials for sustainability. Their study optimized binder systems, aggregate packing, and shrinkage resistance, validating structural performance for pavements (Eco-Pave-Crete) and bridges (Eco-Bridge-Crete).
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