International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
Performance of overburden waste rocks as aggregate in concrete Ashwini R. Raut1, Dr. Bhushan H. Shinde2 1M.Tech Structural Engineering G.H.Raisoni University Amrawati 2Assistant Professor, Dept. of Civil Engineering, G.H.Raisoni University Amrawati, Maharashtra, India
---------------------------------------------------------------------***--------------------------------------------------------------------However, there is a lack of research into quantifying the Abstract - The objective of this research study was to decrease or increase in strength using mathematical correlation in concrete development. In addition, overburden rocks have negative impacts on the environment. However, these materials are readily available in Bhandara District due to the presence of mining belts. The Chikla mines have abundant and inexpensive sources of waste rock materials which are a constant problem as they consume fertile land and are non-degradable. In this research, gneissic rocks as per IS2358 were added to concrete with natural aggregate partially replacing it. This was done to increase the concrete tensile and compressive strength. This combination may have improved mechanical properties when compared to normal mixtures containing only natural aggregates.
investigate sustainable aggregate replacements in concrete. Waste overburden rock from the mining industry was added as a coarse-aggregate replacement by 0%, 15%, 30 %, 45%, 60% and 75 %. This has the potential to reduce material cost while having a beneficial impact on the environment. Mechanical properties of concrete were evaluated and the results were analyzed using SPSS. The study involves 130 concrete specimens with various combinations of these materials, which were prepared, cured, and tested. The mechanical properties, including compressive strength, tensile strength, and modulus of elasticity of concrete were investigated and compared to those of ordinary concrete. The results were numerically analyzed indicating the R2 coefficient, which provided a consistency of 0.77 indicating positive results for the replaced concrete. A generalized formula was developed for analyzing the strength, in linear form, which indicated decreased concrete strength, while remaining useful up to 50% replacement. The aggregate improved the mechanical properties of concrete and can potentially replace up to 50% of natural coarse aggregate. A combination of overburden waste dumps can be used to allow replacement of coarse aggregate in concrete by 50% with considerable in concrete strength.
1.1 OBJECTIVES
strength analysis, waste to wealth
Before you To assess the strength and toughness of concrete mixtures containing partial coarse- aggregate replacement with overburden waste rocks. The mechanical properties of the modified concrete were compared to those of ordinary concrete, while keeping local conditions in consideration. Developing empirical equations in order to analyze the concrete behavior due to similar replacement in the near future.
1.INTRODUCTION
2. MATERIAL COLLECTION
The research work is to estimate the impact of aggregate replacement in the concrete with overburdened waste dumps and to minimize the usage of natural aggregates in the concrete production.
2.1 Cement:- In this work, Ordinary Portland cement (OPC) [IS 122269] was used. The main reason of using OPC is that suitable for all type of concrete, and it gives high compressive strength at early stages and at 28 days. OPC cement also has increased workability and higher strength at later stages.
Key Words: Principal Component Analysis , Compressive
The term sustainable utilization implies the use of waste to their full potential.
2.2 Fine Aggregate:- According to IS 383, most of the aggregate which will pass through 4.75mm IS sieve and entirely retained on 75 µ sieve is considered as fine aggregate. Eg: Sand crushed stone, ash or cinder, river sand.
While at the same time conserving natural resources and finding ways to minimize the environmental impacts associated both with overburden dumping in the mining region.
2.3 Coarse Aggregate:- If the size of aggregate is bigger than 4.75 mm, then the aggregate is considered as coarse aggregate. Collected from mine area.
The results of previous research indicate that the complete replacement of natural aggregate with waste materials is impractical. Decreases in both tensile and compressive strength have been previously observed when identified wastes are used at high replacement rates.
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