M30 Grade Research Articles

Mechanical Properties of Concrete Containing Coconut Shell as Coarse Aggregate Replacement

The increase in the price of traditional construction materials is a serious issue. Concrete, which is made of cement, sand, coarse aggregate, and water, is widely used as a building material. However, an increase in concrete production has certain negative consequences for the environment, such as the extraction of natural resources such as aggregate. Therefore, innovation in concrete materials without neglecting strength can always be done. Coconut shells are one of the recycled materials that can be used as a replacement for conventional construction materials such as aggregate. The aim of this research is to investigate the properties of concrete by using coconut shell as a partial replacement for coarse aggregate. A total of 60 samples with 0%, 10%, 20% and 30% of coconut shells as coarse aggregate for concrete replacement were cast. The properties of fresh and hardened concrete with coconut shell as coarse aggregate replacement were determined at 7, 14, and 28 days of curing ages. The results showed that concrete with coconut shell as a coarse aggregate replacement had a positive impact on workability, porosity, density, and UPV but not on compressive and tensile strength. However, the concrete made from coconut shell aggregates satisfied the minimum requirements of normal concrete, resulting in the acceptable strength required for M30 grade concrete. It can be used as lightweight concrete. Using coconut shell as a replacement for aggregate is not only cost-effective and environmentally friendly, but it also helps solve the problem of conventional material shortages, such as coarse aggregate. It can also help to solve the problem of waste disposal.

Extraction of sand from the complex matrix of coal mining dump waste: A sustainable approach in Indian context

Dump waste generated by open cast coal mining industry is a significant global source of environmental pollution, land degradation and possesses threats to the environmental sustainability. After conducting pilot study, experimental investigations were conducted to study the reuse of waste rocks coming from mining as fine aggregates as a possible replacement of river sand. Physical, chemical and mechanical tests have been carried out in order to analyze in detail the interaction whether extracted sand is suitable in construction sector or not. The present study focuses on utilizing the overburden of the Sasti open cast coal mine of Western Coal Limited in the Chandrapur District of Maharashtra state, India for extraction of sand. Extracted sand contains minerals mainly quartz, alumina, and satisfies the prescribed permissible limit as per the Indian coal provisions for its use in construction work and observed to be equivalent to river sand. The compressive strength obtained with extracted OB sand after 28 days of curing was 29.294 MPa as compared to 33.153 MPa for the river sand for M25 grade of concrete. The focus of the study is on the reclaimed sand and its possible usages and not on the other components like clay of dump waste.

Study of durability and mechanical properties for utilization of cupola slag as a coarse aggregate in M20 grade green concrete

Cupola slag is an industrial waste generated from cupola furnaces during cast iron production. The disposal of cupola slag is a matter of burden for the manufacturers of casting industry. This experimental study aims to reuse cupola furnace slag (CFS) in the construction industry, developing a novel way of solid waste management. In the M20 grade concrete, CFS is used as coarse aggregate (CA), partially replaced by 0–50 wt % in the step of 10 wt %. The mechanical and durability properties of the CFS-based concrete were examined after the required days of curing. The experimental result exposed that the dry density decreases with the increased weight percent of CFS in concrete. The cast samples with up to 40 wt% partial replacement of CFS effectively meet the requirements for the M20 grade of concrete in terms of compressive strength. A similar trend for the split tensile strength was observed, like the compressive strength. Durability test results reveal that water penetration depth increases with increased CFS weight percent in concrete. Moreover, in the case of rapid chloride penetration test, chloride ions penetration is decreased with the increase of CFS weight percent in concrete. FESEM, EDS and XRD were used to examine the microstructure, elemental mapping and phase analysis of the CFS-based concrete. According to the investigation, CFS is a sustainable material that works well as a partial replacement for natural CA in concrete.

Utilization of Aluminum Dross as a Cement Replacement Material for Sustainable Concrete Development

The recovery of aluminum from aluminum dross waste involves intensive cost and energy. Therefore, there is a need for its utilization as an engineering material by using it as a filler material in concrete production. The cement industry is battling numerous difficulties due to the shortage of raw materials and sustainability issues related to the emission of CO2 into the atmosphere. On this basis, the present study aims to utilize aluminum dross as a replacement material for cement to develop sustainable concrete. In this study, the results of control concrete samples were compared to the results of concrete samples containing aluminum dross by 5%, 10%, and 15% by weight of cement. The mechanical and chemical analysis of the M40 grade concrete employing aluminum dross as a replacement material in cement was analyzed. It was noticed that the best percentage of aluminum dross was 10%, providing better results compared with conventional concrete. It recorded the highest strength of 41.3MPa. Thermogravimetric analysis was conducted in which weight loss, decomposition of hydration compounds, and percentage of calcium hydroxide from concrete were determined. Scanning electron microscopy analysis showed that the density of concrete increased owing to the presence of ettringite needles and calcium silicate hydrate in the matrix. Moreover, the toxicity analysis revealed that the ammonia content and the leachability of trace elements from the concrete were both low and within acceptable ranges. The findings indicate that aluminum dross has positive results as an additional cementitious material in concrete to overcome environmental problems related to dross management and reduce cement utilization, producing more sustainable concrete.

Assessment of Strength and Bending of Concrete Containing Crushed Glass and Fibers

Abstract 
 This paper presents proposed investigations of the influence of crushed glass and fibers on the mechanical properties of concrete. Conventional concrete has lack tension in order to improve its flexural strength and compressive strength. This study has adopted the addition of PET fibers and recycled waste glass fibers to concrete. The study uses M25 grade concrete to study the effects of adding crushed waste glass at a weight of 0, 5, 10, and 15%. The PET fibers were extracted from waste bottles used for packaging of drinks and hand cut into very small rectangular pieces (with an average size of 3×10mm). For the mix design, the addition of 0, 3, 5, and 10% dosages of PET fiber was adopted to compare their influence against plain concrete with no fiber addition. Both fiber samples were tested for compressive strength and flexural strength and samples were cured for 7, 28, 56, and 90 days. Results showed that the combination of using crushed glass and PET fibers has a significant effect on compressive strength (i.e., 122%) and flexural beam test (56%) for 90 days of cured samples.

ENHANCING CONCRETE FLEXURAL STRENGTH: REPLACING CEMENT WITH FLY ASH AND BRICK KILN DUST

Concrete is now an essential building material for creation of any type of structural elements, including inflexible pavement as well as beams, columns, slabs, bridges, and girders. Cement is the most essential binding component in the manufacture of concrete because, when combined with water, it can bind both Coarse Aggregate (CA) and Fine Aggregate (FEA). The terms (BKD and FA, which have certain binding qualities when mixed with water, are waste products, as indicated by the paper's title. The researcher's objective is to show how FA and BKD mixed in the percentages of 0%, 10%, 20%, 30%, and 40% are used to partially substitute Ordinary Portland Cement (OPC) of 43 grade during the production of M25 grade of concrete mix design and to calculate the Flexural Strength in accordance with Indian Standards (IS). The outcome of this research analysis demonstrates that FA and BKD can be employed in the manufacturing of concrete with the objective of lowering both emissions of greenhouse gases and cement concrete production costs.

To Study the Strength Characteristics of Concrete Using Mineral Admixture

Aside from the combustion of fossil fuels, the cement making business emits carbon dioxide. The global cement industry accounts for around 7% of greenhouse gas emissions into the earth's atmosphere. To address the environmental impacts connected with cement manufacturing, alternative concrete binders must be developed. Another important environmental concern is the extraction of natural resources such as sand from river bottoms. As a result, substantial study into the use of cement substitutes, including several waste materials and industrial byproducts, is continuing. Bamboo leaf ash was utilised as a partial replacement for cement and fenugreek as an addition in this study, and it was compared to standard concrete. The considered bamboo leaf ash was 5%, 10%, 15% by weight of cement for M25 grade concrete and 5% of fenugreek powder as additive for every mix [1]. Additionally, an experimental investigation of the effects of using bamboo leaf ash in place of some of the cement and fenugreek powder as an additive on the performance of concrete in terms of compressive strength and flexure strength. Concrete is cast for the experimental study, and cement is partially substituted with bamboo leaf ash by weight of cement and fenugreek powder as an addition. Because the inclusion of bamboo leaf ash and fenugreek powder works as a binding ingredient in the concrete, the compressive and flexural strength increases. Finally, the compressive and flexural strengths for the combination of bamboo leaf ash as a partial replacement and fenugreek powder as an addition powder in concrete are investigated for the best results obtained from the aforementioned experiment.

Self Compaction Concrete

Abstract: In this paper, we present the main objective of this study is to gain an absolute knowledge on self-compacting concrete (SCC) and to sort out the research gap in field of self-compacting concrete containing admixtures. This research study is carried out in the three phases and the details are Phase – I to develop the mix design of M50 grade using Nan-Su method. To optimize the developed mix proportions by using statistical (DOE) design; ranging content of the key variables of self-compacting concrete cement. To study the fresh concrete properties (rheological) and mechanical properties (compressive strength) of selfcompacting concrete by varying different parameters such as fine aggregate, coarse aggregate, super plasticizer (SP) and water/binder ratio.

Experimental Investigation of Effect of Waste PET fibres on the Impact Behaviour of PET Fibre Reinforced Concrete

<p>Concrete, being the construction material that is extensively employed, possesses various limitations despite its adaptability in building projects. It exhibits weakness when subjected to tension, has restricted ductility, and offers minimal resistance against cracking. Concrete is widely used in construction due to its high strength. The aim of this study is to conduct experimental research on the utilization of PET fibre as a construction material in concrete, which is technically sound and environmentally safe. The use of PET fibre in various engineering applications can solve the problem of disposal of plastic waste. PET fibre can be used in concrete to improve its ductile parameters. PET wires of 50 mm in length and 3 mm in width are used in this work. The tests conducted on M30 grade concrete included assessments of its strength in compression, strength in split tensile, strength in flexure, and resistance to impact. The percentages of addition were 0 %, 0.25 % and 0.5 % density of fibre. The impact properties of PET fibre concrete were studied. Test results showed that there is improvement in compressive strength, split tensile strength, flexural strength and a significant increase in impact resistance of concrete after the addition of PET fibres.</p>

Numerical Analysis of Hybrid Fibre-Reinforced Concrete Beam-Column Joint

Beam-column joint is the most vulnerable location of a moment-resisting reinforced concrete frame structure. The joint region experiences the maximum shear stress both in vertically and horizontally which is generated due to the shear transfer mechanism from the adjoining beams and columns. The shear capacity and bond stress capacity are the two major factors affecting the strength of a joint core in RC structure. An important discovery recently is the ductile behaviour of the whole structure under repeated loading. The behaviour of the concrete beyond elastic limit which is in the concrete hardening zone can drastically influence the ductility of the concrete. The non-linear stress-strain behaviour after the onset of the initial crack and up to ultimate compressive strength plays an important role in improving ductility. Beyond the ultimate compressive strength, concrete will undergo softening which is neglected in this study as once concrete reaches ultimate stress it is unsafe for service. This material ductility can be fulfilled with the application of high-strength fibres with ductile behaviour. However, the hybridization of two or more fibres can incorporate two different characteristics of the fibre used. The use of ordinary-grade of concrete moreover reduces the shear-resisting capacity of the joint. A hybrid mix of hooked-end steel fibre with basalt fibre and crimpled steel fibre with polypropylene fibre are used with a volume fraction of 1% to 1.4% of the concrete. In this study, ordinary M25 grade concrete and fibre mixed M25 grade concrete is employed under static and cyclic loading. The laboratory tests are also conducted to evaluate the compressive strength, split-tensile strength, and flexural strength of the hybrid mix fibre-reinforced concrete at the age of 28th days. Five full-scale models of the beam-column joint are designed as per the Bureau of Indian Standards. Numerical models of concrete and steel reinforcement are developed. Numerical analysis is carried out using finite element software ANSYS-v21. The behaviours of the beam-column joint are observed under static as well as cyclic loading. Crack patterns, first crack load, initial displacement, ultimate load, and ultimate displacement are observed under static conditions. And under cyclic loading, hysteresis load vs displacement, energy dissipation, and stiffness degradation are observed. The hybridization of hooked steel with basalt fibre gives better results in mechanical strengths and the hybrid effect of crimpled steel with polypropylene fibre gives better results in mechanical strengths. And also under numerical study, the above specimens show an improvement in energy dissipation capacity. Keywords beam-column joint, hybrid fibre reinforced concrete, numerical concrete model, ANSYS, static, reverse cyclic, energy dissipation, stiffness, crack

Evaluation of Compressive Strength of Concrete with Various Proportions of Stone Dust as Fine Aggregate

Concrete is the most dynamic engineering material in construction due to its durability and strength properties, which have been used in almost all types of physical infrastructure construction. Crushed stone dust is a supplementary material that can be utilized to produce sustainable concrete. The concept of replacing natural fine aggregate in concrete production with stone dust (SD) could enhance the consumption of stone dust produced during aggregate production as well as reduce the requirement for landfill area for stone dust management. The study aims to compare the compressive strength of nominal mixed M20 and M25-grade concrete by replacing fine aggregates with stone dust. The results reveal that compressive strength increases with an increase in stone dust, but the rise in SD percentages beyond a certain level has a negative impact on the strength of concrete. However, fresh density has a similar trend of compressive strength, and the workability of concrete shows a declining trend with a rise in SD levels. From the results of the experimental investigations conducted, it is concluded that the SD can be used as a replacement for fine aggregate. It is found that 40% replacement of fine aggregate by SD gives a maximum compressive strength than normal M20 and M25 grade concrete, which starts decreasing beyond 40% replacement. The compressive strength of the concrete has been quantified by replacing sand with varying percentages of stone dust and found that it does not satisfy the specification except for 40% replacement for M20 grade concrete, though it can be used for low and medium strength concrete production. The cost savings for M20 and M25-grade concrete at 40% sand replacement are 8.23% and 7.62%, respectively.

Experimental evaluation and statistical modeling of sustainable sisal fiber-reinforced fly ash-based lateritic concrete using response surface methodology

This research uses waste laterite scraps as coarse aggregates in sisal fiber-reinforced fly ash-based lateritic concrete and evaluates its strength properties to create sustainable concrete. By lowering the requirement for virgin materials, its use lessens the need for granite mining, environmental contamination, and the preservation of natural resources. Using response surface methodology (RSM’s) central composite design (CCD), twenty-nine different lateritic concrete mixtures have been designed with varying input factor combinations (LA: 25%–100%, FA: 5%–20%, SF: 0.25%–1%, and SP: 1%–1.6%) with a total of 279 test specimens were cast and tested for responses like compressive, split-tensile, and flexural strengths at 28 days. The analysis of variance (ANOVA) test was performed to determine the accuracy of the mathematical models developed following the experimental results. Quadratic models were proposed due to a higher coefficient of determination (R2) for all responses. The higher addition of laterite aggregate linearly reduces fresh concrete’s workability. The compressive strength of the M30 grade concretes for 28 days increased by 11.20% when 25% of the granite aggregates were substituted with laterite aggregates. Compressive strength decreases above 25% replacement. Similarly, split tensile and flexural strengths are increased over the control mix by 10.86% and 5.88%, respectively. Multi-objective optimization was used to study the interactions between the different components and determine the appropriate mixing ratio. Considering the goals of multi-objective optimization, the optimal mix of sisal fiber-reinforced fly ash-based lateritic concrete may be produced with LA substitution of 25%, FA substitution of 10.52%, SF addition of 1%, and SP addition of 1.48%. Experimental validation was carried out with an error rate of less than 5% of the anticipated optimal data.

Experimental and analytical investigation of a model towards predicting the compressive stress–strain behavior of Graded Glass Fiber Reinforced Concrete (GGFRC) using fiber reinforcing index

AbstractThe stress–strain behavior of graded glass fiber reinforced concrete (GGFRC) is a crucial factor in its performance and appropriateness for diverse applications. In the present study, experimental and analytical methods were used to develop a model for the stress–strain behavior of GGFRC under uniaxial loading. The experimental program is designed to investigate the impact of mono glass fibers (3, 6, 12, and 20 mm) with varying volume fractions (0.1%–0.5%) and graded glass fibers (combinations of 3 + 6 + 12 + 20 mm) on the behavior of concrete of M50 grade. By grading glass fiber lengths in the concrete, GGFRC's pre‐peak strength and post‐peak deformation have increased, allowing the composite to control the various scales of cracking. A uniaxial compressive stress–strain model has been developed utilizing the fiber reinforcing index to predict the stress–strain curves of GGFRC in compression. The fiber reinforcing index, which is a measure of the quantity of fiber reinforcement in the material, is used as a variable in the current model to observe how it impacts the material's behavior. This would help evaluate the material's behavior under uniaxial compressive loading conditions and then use that data to develop a mathematical model that can predict the material's response under other conditions. Finally, it can be concluded that there is a significant correlation between the experimental results and the proposed analytical model.

Plasticity and ductile fracture of high-strength bolt materials under monotonic tension

The plasticity and fracture properties of high-strength bolts are crucial to the mechanical behaviours of bolted connections subjected to extreme loadings. However, the material properties of high-strength bolts have not been comprehensively studied. This paper presents a collaborative experimental and numerical investigation to characterise the material plasticity and fracture properties of normal high-strength bolts (NBs) and weathering high-strength bolts (WBs) under monotonic tension. Eighteen cylindrical tensile coupons, cut from M20, M24 and M30 grade 10.9 NBs and WBs, are tested to capture the full-range engineering stress-strain relationships. The combined Swift-Voce weighting model is modified to describe and calibrate the material true stress-strain relationship of NBs and WBs. Then, a void-growth model (VGM) incorporated with the calibrated true stress-strain relationship is used to simulate the ductile fracture of tensile coupons. The calibration process collaborating experimental results and finite element (FE) simulations to obtain material parameters of high-strength bolts is demonstrated in detail. This collaborating method is further employed to simulate the plasticity and fracture properties of normal bolts with various grades under tension, as well as grade 10.9 high-strength bolts subjected to monotonic tension at elevated temperatures in literature. FE simulation results show a high accuracy with experimental results across all specimens, proving the rationality of the proposed method for material plasticity and fracture properties of high-strength bolts.

Impact of coconut husk microcrystalline cellulose on the properties of geopolymer lightweight concrete

Geopolymer composite is an alternative to ordinary Portland cement. It has potential to avoid CO2 emissions to the atmosphere and to save raw materials during its manufacture. Flyash-based geopolymer concrete is altered by adding ground granulated bast-furnace slag (GGBS) to improve its fresh and hardened properties. Thermal ash aggregate is used as coarse aggregate to reduce geopolymer concrete density, improve strength, and conserve natural aggregate. Along with this matrix, coconut husk microcrystalline cellulose (MCC) is added to enhance its performance. In a M40 grade flyash and GGBS-based geopolymer concrete, MCC was used to replace fly ash at 1% to 5% levels. The geopolymer composites were tested for slump, compression, split tensile, water absorption, and acid resistance to determine the way coconut husk MCC interacts with lightweight concrete. An inclusion of 3% MCC with geopolymer composites improved 2% slump, 6% of compressive and split tensile strength. About 1.6% of water absorption was reduced in GPC matrix with 3% of MCC. Meanwhile 3% of MCC in geopolymer concrete improved, 4% of weight and 7% of strength under acid exposure. The research strongly supported utilizing MCC in geopolymer concrete to render it more sustainable and eco-friendlier.

Effect of replacement of natural sand by manufactured sand on the self-compacting concrete

This paper investigates the experimental analysis of concrete mixtures with different percentages of manufactured sand replaced for natural sand, with a focus on M25 and M30 grades. The study analyses various repairing times, with a special focus on 3, 14, and 28-day periods. The main conclusions show a clear pattern, with the maximum compressive strength for M25 and M30 grades being found at 50% and 100% replacement levels, respectively. This positive connection indicates that the amount of manufactured sand incorporation affects the compressive strength and shows its effect over different curing times. It is noteworthy that self-compacting concrete (SCC) made using crushed sand has a higher compressive strength than SCC made with natural sand. The study’s final findings, that emphasize the beneficial impacts of manufactured sand on SCC’s overall compressive strength characteristics, provide crucial data for enhancing concrete mix design. For the purpose of developing M sand, rocks are crushed to a similar size and form as natural sand or N-sand. The possible use of M-sand in SCC has been addressed in this paper. In this study, an effort has been made to analyze the potential use of M-sand in SCC. Self-Compacting Concrete (SCC) is a revolutionary concrete that allows for compaction and placement without the requirement for vibration. It may flow under its own weight even in the centre of dense reinforcement, entirely covering formwork and achieving full compaction. An attempt has been made to compare the characteristics of M35 self-compacting concrete in each its fresh and hardened states, substituting manufactured sand for river sand.

Evaluation of Flexural Strength of Novel Hypo Sludge for Increasing the Strength of M30 Grade of Concrete by Partial Replacement for Cement and Addition of Sikacrete with Conventional Concrete

Aim: This investigation looked at the effects of Novel Hypo Sludge and Sikacrete on concrete with the main objective of improving its mechanical qualities. To Assess the flexural and compressive strengths, and other mechanical properties of concrete when mixed with Novel Hypo Sludge and Sikacrete. Materials and Methods: The use of SikaCrete and partial substitution of innovative hyposludge (paper pulp) in cement enhance the flexural strength of concrete when compared to M30 grade conventional concrete. Results: In this experiment, the flexural strength of grade M30 concrete was tested after 28 days using a beam mould with dimensions of 500 mm x 100 mm x 100 mm. The experiment looked at the effects of adding hypo sludge in the range of 30% on the strength qualities of concrete.The findings of the tests show that the novel hypo sludge-infused concrete performs better than cement-only concrete. The novel hypo sludgeadded concrete had an average flexural strength of 19.31 N/mm2 compared to conventional concrete with an average flexural strength of 16.59 N/mm2. From the statistical analysis the significant value is computed as p value=0.000, (p<0.05), twotailed and is considered as statistically significant in the accuracy rate when comparing both Novel Hypo sludge and Conventional concrete. Group statistics for this 30% novel hyposludge concrete sample group Standard deviation (0.47883, 0.66145), mean (16.5889, 19.3111), and standard error (0.11286, 0.15591). Conclusion: As a consequence, the performance of HSC put through the flexural strength test can be significantly improved by adding Novel Hyposludge (Paper Pulp) to Cement and SikaCrete.

Enhancing the Compressive Strength of M30 Grade of Concrete Using Pumice With 50% GGBS and Metakaolin Comparing with Conventional Concrete

The aim is to compare the conventional concrete by employing a mix of M30 grade concrete, a novel pumice aggregate is used to partially replace the coarse aggregate to create lightweight concrete. All groups were prepared at the composition of 40% Cement and replacing 50% GGBS, 10% Metakaolin is kept constant in our concrete. Coarse aggregate replaced by novel pumice stone and M-sand as Fine aggregate. The group of 6 cubes was formed according to the curing dates of 28 days. Metakaolin and GGBS are procured from Scientific Company and Novel Pumice Aggregate are arranged from online traders. Cement and M sand were arranged from the local shop. The group of 18 cubes was formed according to the Curing date for 28 days. To determine the compressive strength, two groups and a total of 36 cubes were constructed. The average compressive strength test result for conventional concrete of grade M30 at 28 days is 30.28 N/mm2. The average result for Group I and for 18 cubes for the M30 grade of concrete @ 28 days Compressive Strength test result of Concrete with Novel Pumice Aggregate stone and Partial Replacement of GGBS and Metakaolin by the weight of cement is 35.19 N/mm2. From the independent t-test analysis p=0.000, i.e., smaller than p=0.05(p<0.05) which indicates that there is a noteworthy statistical distinction between the two groups. The compressive strength of concrete of M30 grade at 28 days of compressive strength test results of concrete with new pumice aggregate stone and partial replacement of GGBS and Metakaolin by the weight of cement is increased.

Analyzing the impact of nano-sized silica on composite concrete: A static approach utilizing response surface method

The utilization of composite materials as alternatives to Ordinary Portland Cement (OPC) is essential in mitigating the environmental impact of cement production. This study investigates the potential of industrial by-products rich in silica and alumina, such as fly ash (FA), alccofine (ALC), and nano silica (CNS), to partially replace OPC in concrete. Tetranary blended nano concrete (TBNC) compositions, incorporating 25% FA, 10% ALC, and varying proportions of CNS (0%, 0.5%, 1%, 2%, and 3%), were examined for their compressive strength in M30 and M60 grade concrete following a 90-day curing period. Results demonstrate the significant influence of CNS on compressive strength of TBNC. To validate these findings, Response Surface Methodology (RSM) was employed for mathematical modeling and statistical analysis, predicting compressive strength values and comparing them with experimental data. This research underscores the viability of utilizing industrial by-products in concrete production, thereby promoting sustainable construction practices

Influence of hybrid basalt fibre with varied length on the mechanical properties of normal and high strength concrete

Hybrid fibre-reinforced concrete combines different types of fibres or fibres of varying lengths to maximize their individual advantages, which can potentially lead to a synergistic enhancement in overall performance. The main aim of this study is to explore the feasibility of integrating a hybrid fibre system to enhance the efficiency and properties of basalt fibre-reinforced concrete. Specifically, the research focuses on evaluating the mechanical characteristics of basalt hybrid fibre-reinforced concrete across two concrete grades: normal strength M30 and high strength M60. Basalt fibres of 12 mm and 30 mm lengths are used to hybridize the concrete, with a total fibre volume fraction of 1.5%. By incorporating both short and long basalt fibres into the concrete matrix, this study aims to assess how these variations impact essential properties such as workability, compressive strength, flexural strength, and Modulus of Elasticity (MOE). The hybrid mix, comprising 25% of 12 mm fibres and 75% of 30 mm fibres at a volume content of 1.5%, demonstrates enhanced mechanical properties across all concrete grades. The addition of basalt fibres, particularly those with higher proportions of longer fibres, results in a decrease in workability. Notably, hybridizing fibres have no discernible effect on compressive strength or MOE in both concrete grades. From the results it was observed that the flexural strength of the optimal hybrid mixes is significantly higher, surpassing conventional concrete by 39% and 54.35% for M30 and M60 grades of concrete, respectively.