Split Tensile Research Articles

Strength and microstructural characterization of silica fume blended concrete with increased curing period

With rapid urbanization and an exponential surge in population, the need and demand for concrete structures have increased, and industrial waste has also increased. Due to this, the adverse effects on the environment have started to show. Utilizing industrial byproducts in concrete, such as silica fume (SF), not only contributes to the reduction of industrial waste, but also mitigates the adverse environmental effects. The present investigation is mainly focused on the influence of SF on the strength and microstructure of concrete with an increased period of curing. In this study, SF is used as a substitute for cement in varied proportions of 0 %, 10 %, 20 %, 30 %, and 40 %. This investigation determines the mechanical parameters of concrete, such as compressive, split tensile, and flexural strength, at curing periods of 28, 56, and 84 days. The results indicate that a 10 % substitution of cement with SF as the optimum dosage. In this investigation, scanning electron microscopy is performed to examine the microstructure of the concrete samples that contributed to the variation in strength characteristics with an increased period of curing. Microstructural analysis has revealed that the incorporation of SF in the concrete matrix with an increased period of curing has led to the decrease in voids and an increase in hydration products. The incorporation of SF in the concrete matrix led to the densification of the microstructure. With increased period of curing, the strength parameters have enhanced due to the pozzolanic reaction between SF and the free lime present in the concrete matrix.

Utilizing ANFIS for strength characteristics forecasting in variable heat-cured geopolymer composites

Reducing cement usage through geopolymer concrete (GPC) can be crucial for resolving environmental concerns. The byproduct of the coal and steel industry, such as fly ash (FA) and ground granulated blast furnace slag (GGBS), is mainly used as a precursor in the production of GPC due to the availability of aluminosilicate products in it. In this work, nano silica is added to the GPC in different percentages and GPC is cured at different temperatures to study the change in the strength of GPC due to change in curing temperature. The compressive strength, flexural strength, and split tensile strength up to 68.99 MPa, 5.89 MPa, 6.82 MPa, respectively was achieved after 28 days of heat curing. However, testing GPC experimentally to anticipate its strength is time-consuming and expensive. Therefore, the ability to precisely forecast concrete strength can be achieved through machine learning. In this study, the correlation for both nano silica (%) and curing temperature towards the strength of concrete is also investigated using adaptive neuro fuzzy interference system (ANFIS) models. ANFIS results showed better compressive, split tensile, and flexural strength prediction with the highest R2 0.9801, 0.9943, and 0.9877, respectively. The performance efficiency of the developed ANFIS model is more significant minimum error for compressive strength prediction (MAE = 0.21375, RMSE = 0.02574, MAPE = 0.42), split tensile strength prediction (MAE = 0.07375, RMSE = 0.0923, MAPE = 1.46) and flexural strength prediction (MAE = 0.04, RMSE = 0.0728, MAPE = 0.78) of GPC cured under different temperature conditions. The results from experiments show that the prediction efficiency of the model is also good, as indicated by the correlation coefficient (R). This model is helpful for further designing the proportion of material for achieving good strength of GPC.

Investigating Concrete Properties with Partial Replacement of Cement by Alccofine and Eggshell Powder

In this study, we investigate the effect of substituting cement with Alccofine and eggshell powder on the strength properties of concrete. Cement production is a significant source of carbon dioxide emissions, prompting the search for sustainable alternatives. Our research aims to address this environmental concern by evaluating the potential of Alccofine and eggshell powder as partial cement replacements while maintaining or enhancing concrete quality. We prepared various concrete mixtures with a constant 10% substitution of Alccofine, combined with different proportions of eggshell powder replacing cement (ranging from 0% to 20%). Through thorough testing including compressive, split tensile and flexural strength assessments, we analyzed the mechanical performance of these mixtures. Our findings demonstrate that Alccofine and eggshell powder can effectively substitute cement in concrete, providing a more environmentally friendly option that improves material strength. However, further research is needed to optimize the mix proportions and assess long-term durability in diverse environmental conditions. Notably, combining eggshell powder with Alccofine presents a promising approach to enhancing concrete performance while reducing the environmental impact of cement production. This study contributes to advancing sustainable practices in concrete construction, promoting the use of eco-friendly building materials. Key Words: Alccofine, eggshell powder, compressive, split tensile and flexural strength.

The Effect of Partial Replacement of Cement with Diatomaceous Earth (DE) and Polypropylene Fibers (PPF) on Fresh, Hardened, and Durability Properties of Concrete

This research aims to investigate the fresh and mechanical properties of concrete with diatomaceous earth (DE) and polypropylene fiber (PPF). The cement was partially replaced by DE in the concentration ranging from 5 to 20% by weight; whereas, PPF was incorporated in concrete mix as in range of 0.05–0.20% by cement weight. Totally, 25 different mix proportions were developed and their fresh properties were examined using slump, density and compacting factor tests. Besides, mechanical properties were evaluated by. Using compressive, split tensile, and flexural strength analysis at the ages of 7th, 14th and 28th days. Furthermore, concrete durability properties were evaluated using water penetration, chloride permeability as well as sorptivity tests, which have been performed at the age of 28th day. The result exhibits that the incorporation of D.E slightly affects the slump value meanwhile PPF decreases the fresh values. Furthermore, the combination of DE and PPF in concrete significantly enhances the mechanical properties compared to the control mix. The mix proportion of 15% DE and 0.15% of PPF exhibited a noticeable influence on mechanical properties as well as durability properties compare to control concrete.

Effect of confining pressure on the damage characteristics and mechanism of granite under ultra-high-frequency impact

Assisted ultra-high-frequency impact technology is a promising method for improving hard rock-breaking efficiency in geotechnical and petroleum engineering. However, previous studies did not consider the effects of in situ stress. In this study, triaxial ultra-high-frequency impact tests were conducted at confining pressures ranging from 0 to 20 MPa. Using nuclear magnetic resonance, infrared thermal radiation, crack dye penetrant, and scanning electron microscope tests, the influence of confining pressure on the macro, meso, and micro damage characteristics and mechanism of granite was revealed. The results indicate that with the increasing confining pressure, the porosity increment of small pores continuously decreases from 0.2% to −0.02%; the moderate pores first increase to a peak of around 0.18% before 6 MPa and then gradually decrease to around zero. The large pores began to increase after 8 MPa, increasing to around 0.05% when the confining pressure was 14 MPa. In addition, the failure mode first changed from tensile splitting damage to a relatively intact state with meso-damage, and finally, transverse shear fracture occurred owing to the higher shear stress and low mode II fracture toughness near the crack tips. These findings prove the effectiveness of ultra-high-frequency impact technology in weakening hard rock in deep strata.

Influence of Recycled Aggregates and Silica fumes on Compression and Split Tensile Strength of Composite Materials

Influence of Recycled Aggregates and Silica fumes on Compression and Split Tensile Strength of Composite Materials

Mechanical Properties of a Sustainable Low-Carbon Geopolymer Concrete Using a Pumice-Derived Sodium Silicate Solution.

A geopolymer is an inorganic amorphous cementitious material, emerging as an alternative sustainable binder for greener concrete production over Ordinary Portland Cement (OPC). Geopolymer concrete production promotes waste reuse since the applicable precursor materials include agricultural and industrial waste that requires disposal, helping to reduce waste in landfills and ensuring sustainable environmental protection. This study investigates the development of an environmentally friendly sodium silicate alternative (SSA) derived from pumice powder (PP) in place of a commercial Na2SiO3 solution at a 10 M concentration. Six concrete batches were produced at alkaline/precursor (A/P) ratios of 0.1, 0.2, 0.3, 0.4, and 0.5. The geopolymer mix AF4, with an A/P ratio of 0.4, became the optimum geopolymer concrete design; however, it recorded lower compressive, tensile splitting, and flexural strengths, respectively, against the control OPC concrete. The geopolymer formulations, however, obtained 28-day-hardened concrete densities comparable to the control concrete. The 28-day compressive strength of the OPC concrete was 29.4 MPa, higher than the 18.8 MPa recorded for AF4. However, the 56-day strength of AF4 improved to 22.4 MPa, an around 19% increase compared to the 30.8 MPa achieved by the control mix on day 56, having experienced only a 5% strength increase. The low mechanical performances of the geopolymer formulation could be attributed to extra water added to the original geopolymer design to improve the workability of the geopolymer mix. Therefore, the SSA alkaline solution using PP showed some potential for developing geopolymer concrete for low-strength construction applications.

Effect of nano SiO2 on rheology, nucleation seeding, hydration mechanism, mechanical properties and microstructure amelioration of ultra-high-performance concrete

The use of Nano SiO2 products will likely change cement, concrete construction sector. Their stability, low toxicity, and ability to functionalise with chemicals and polymers have drawn interest. When mixed with hybrid nanomaterials, nanostructured silica with unique geometric properties can improve biomaterial conjugates. Few scientists have studied the effects of Nano SiO2 on cement-based composites microstructural characterisation and mechanical behaviour. In this study four combinations were made by adding 0%, 1%, 2%, and 3% Nano SiO2 by cement weight. The tested Ultra-High-Performance Concrete (UHPC) mixes with various mechanical and microstructural characterisation techniques utilised. The finding suggests that the UHPC mixture with 2% Nano SiO2 has better mechanical and microstructural capabilities than the others. The study found that UHPC samples with more Nano SiO2 had higher mechanical strength than the reference sample. The study found that adding UHPC 2% Nano SiO2 to the mix increased compressive, split tensile, and flexural strength by 56%, 37%, and 28%, respectively. In UPV testing, this UHPC NS-2% mix had the greatest average velocity 4883 m/s and 4951 m/s for 28 and 90 days, suggesting a stronger concrete matrix. In optimum UHPC mix due to nucleation effect of Nano SiO2 and hydration of cement generates to more Calcium Silicate hydrate gel formation and less ca/si ratio is 0.54. It will lead to produce the dense UHPC with lowest porosity. The environmental and economic benefits of UHPC with Nano SiO2 make it a suitable building material for various civil engineering applications.

Effects of elevated temperature exposure on the mechanical properties of recycled fine aggregate concrete

ABSTRACT In this work, a compound waste material was made up of raw construction waste concrete, waste tiles, and waste bricks was mixed at a weight ratio of 6:3:1. They were ground into recycled fine aggregates (RFA). RFA substituted the local river sand in proportions of 0%, 30%, 50%, 70%, and 100% for preparing recycled fine aggregate concrete (RFAC) with varied water-to-cement ratios. It intended to explore concrete’s mechanical properties and ultrasonic pulse velocity changes before and after high temperatures (300–800°C). The loss on ignition (LOI) of concrete was simultaneously determined to compare the performance in resisting elevated temperature. Test results presented that the higher the replacement ratio of RFA, the gradually higher the reduction in the concrete splitting tensile, compressive, and residual compressive strengths and ultrasonic pulse velocity after elevated temperature exposure. A rapid reduction was especially found at the heated temperature of exceeding 440°C. Furthermore, the old cement paste adhered to the surface of the raw construction waste had a relatively higher LOI. This led to the consequence that the RFAC had an increased LOI with the increment of the RFA replacement ratio, while the LOI of RFAC dropped with the increment of the originally heated temperature.

Split Tensile Strength of Graphene Nano-Engineered Concrete

Split Tensile Strength of Graphene Nano-Engineered Concrete

Sustainable innovation in self-compacted concrete: Integrating by-products and waste rubber for green construction practices

Due to increasing concern about global climate change and its negative influence on societies, there is a specific focus on the construction sector as the greatest contributor to greenhouse gas emissions. About 8–10% of global CO2 emissions come from cement production, which releases almost a ton of CO2 for every ton of cement. Growing demand for cement and concrete is attributed to rapid urbanization, industrialization, and economic growth, which also substantially impacts the depletion of natural resources. To address these challenges, a feasible approach is to utilize by-product materials and waste rubber as alternatives to cement and natural fine aggregates in producing self-compacted concrete (SCC). The utilization of various percentages of fly ash (FA), ground granulate blast furnace slag (GGBFS) as cement replacement, and crumb rubber (CR) from waste tires as a partial substitution of fine aggregate offers a suitable choice for the development of sustainable SCC. In addition, compressive strength (CS) is a vital property when considering other characteristics of concrete. Therefore, it is vital to develop reliable models for predicting the CS of SCC to achieve cost, time, and energy savings. Therefore, this research examines the impact of various contents of FA and GGBFS as cement (C) alternatives and CR as a sand replacement on the CS of SCC. To predict the CS of rubberized SCC mixtures, four different models were employed: linear regression (LR), multi-linear regression (MLR), full quadratic (FQ), and M5P-tree. To accomplish this, a comprehensive set of data comprising approximately 436 samples was analyzed to develop the models; as input variables, various mixture proportions, and curing ages were considered. To ensure the accuracy and reliability of the predictive models, several statistical assessments were performed. Based on the statistical assessment tools conducted in this study, the FQ model is considered the most effective model for forecasting the CS of SCC. Based on the statistical assessment tools, the FQ model was also implemented to forecast the splitting tensile and flexural strengths of SCC. The sensitivity analysis indicates that CR and GGBFS content are the best criteria for forecasting the CS of SCC utilizing this data set.

Parametric study for optimizing fiber‐reinforced concrete properties

AbstractConcrete with fiber reinforcement is stronger and more ductile than concrete without reinforcement. Significant efforts have been made to demonstrate the properties and enhancements of concrete after reinforcement with various types and shapes of fibers. However, the issue of optimization in the reinforcement process is still unanswered. There is no academic study in the literature now available that can pinpoint the ideal fiber type, quantity, and shape and, more crucially, the overall technical viability of the reinforcement. The parametric analysis in this study determines the ideal shape, size, and proportion of fibers. The input and output parameters were separated from the optimization design variables. Input parameters included assessment of samples of fresh and mechanical concrete properties and the influence of type, length, and percentage of fiber on concrete performance. The aim was to establish the most efficient relationship between fiber dose and dimension to optimize the combined responses of workability and splitting tensile, flexural, and compressive strength. The mechanical and fresh properties of concrete reinforced with four different fibers, PFRC‐1, PFRC‐2, SFRC‐1, and SFRC‐2, were tested. The analysis showed that SFRC‐2‐20 mm‐1%, with compressive, split tensile, flexural, and workability values of 44.7 MPa, 3.64 MPa, 5.3 MPa, and 6.5 cm respectively, was the most effective combination among the materials investigated. The optimization technique employed in this study offers new, important insights into how input and output parameters relate to one another.

Effect of Cockle Shell as Coarse Aggregates Replacement on Mechanical Properties of Concrete

Gravel is a natural raw material used in concrete mixtures. However, more of this scarce resource was used, which reduced the amount of gravel-based coarse aggregates that could be produced. As a result, efforts to preserve natural coarse aggregates for future generations were critical. So, an innovation to replace this natural coarse aggregate was required. The dumping of cockle shell waste by the cockle trade emits a stinking smell and pollutes the environment. This study investigates the density, compressive, splitting tensile and flexural strengths of concrete containing cockle shell as a coarse aggregate substitute. Four concrete mixes were prepared by integrating diverse contents of cockle shell as 0%, 10%, 20% and 30% partial replacement of coarse aggregates by weight of gravel. Concrete becomes less dense as a large amount of cockle shell is integrated. Utilization of cockle shell up to 10% enhances the compressive strength of concrete. However, increasing the amount of cockle shell by up to 30% can improve the splitting tensile and flexural strength of concrete

Characterization and preparation of eco-friendly foamed concrete using a foaming agent: Optimizing the design by Taguchi analysis

Solid waste management has emerged as the primary global environmental challenge due to the constant production of increasing waste by-products and materials. Using waste materials makes concrete production economical and helps resolve disposal problems. The effects of lightweight foam concrete reinforced with corncob ash (CA) and basalt fibre (BF) on durability, thermal conductivity, and mechanical properties are investigated elaborately in this study. The foam concrete mix is prepared in three series with a foam (F) content of 25, 50, and 75 kg/m3 with and without the CA and BF reference mixes. The mix of corncob ash is chosen as a cement replacement in six different concentrations: 0%, 20%, 30%, 40%, 50%, and 60%. In addition, compositions of 0.5%, 1.5%, and 3% basalt fibre length variation were incorporated into the weight of the cement. Split tensile, compressive, and flexural strengths are determined at 7, 14, and 28 days. The workability, porosity, durability, and thermal characteristics are also examined. This study analyses the confirmation experiment to verify the optimum mix proportions of lightweight foam concrete by applying Taguchi’s experimental design for concrete mixes incorporating by-products as a partial cement replacement. Adding BF improved the mechanical properties of compressive, tensile, and flexural strength, whereas adding CA decreased porosity and thermal conductivity. The 50% CA with 1.5% BF blended concrete with 50 kg/m3 F exhibits high strength compared to 25 and 75 kg/m3 at all ages. The split tensile strength of the F50CA50BF1.5 mix varies from 2.19 MPa to 2.73 MPa, and the compressive strength of 29.13 MPa is higher than that of 14.36 MPa, 18.63 MPa, and 0.88 MPa for the R 25, R 50, and R 75 kg/m3 mixes. The highest mechanical strength and improved durable properties are achieved by replacing 50% of CA and 1.5% of BF with F 50 by-products at all curing periods.

Mechanical Properties of Aeolian Sand Concrete Made from Alkali-Treated Aeolian Sand and Zeolite Powder.

The aim of this study is to promote the application of the excited zeolite powder (ZP)with aeolian sand powder (ASP) in the field of aeolian-sand concrete (ASC) production. This study utilises NaOH to treat composite cementitious materials containing aeolian sand and zeolite powders, which were used to replace 50% of the cement in aeolian-sand concrete (ASC). Production of alkali-inspired cement-based windswept concrete(AAZC).The mechanical properties of treated ASC considerably improved, especially when the NaOH dosage was 4% by mass. After curing this sample (denoted as AAZC-4) for 28 d, its compressive strength improved by 17.2%, and its split tensile increased by 16.3%. Potassium feldspar and montmorillonite in zeolite powder and SiO2 in the sand were decomposed by OH- and combined with other elements to generate various silicate gels and A-type potassium zeolite crystals inside the concrete. Microscopic examination showed that the gels and crystals intertwined to fill the pores, decreasing (increasing) the percentage of large (small) pores, thus optimising the pore structure. This substantially improved the mechanical properties of ASC. Freeze-thaw salt-intrusion tests showed that the extent of mass loss, degree of damage and loss of compressive strength of AAZC-4 were similar to those of ordinary concrete but were reduced by 36.8%, 19% and 52.1%, respectively, compared with those of ASC. Therefore, AAZC-4 has a sustainable working performance in chloride-ion permeable environments in cold and arid areas.

Effect of water quenched silicomanganese slag as fine aggregate on mechanical properties and microstructure characteristics of solid waste-based mortar and concrete

Research on water quenched silicomanganese slag (WQSMS) has primarily focused on grinding it into micro-powder to be used as auxiliary cementitious materials or to synthesize alkali-activated cementitious materials. However, there is a lack of research on utilizing WQSMS as fine aggregates instead of natural aggregates. Although its properties are similar to granulated blast furnace slag (GBFS), most studies investigating the use of GBFS as fine aggregates have mainly focused on mechanical properties rather than microstructure analyses. Meanwhile, to make full use of industrial solid waste, reduce CO2 emissions, and save energy consumption, solid waste cementitious material based on steel slag (SS), desulphurized gypsum (DG), and GBFS, as well as WQSMS as fine aggregate to replace ISO standard sand and washed-out sand (WOS) in various proportions(0%, 25%, 50%, 75%, and 100%) to prepare mortar and concrete, respectively. Analyses of workability, mechanical properties, and microstructure were carried out, and the improvement of mechanical properties of WQSMS was analyzed by SEM-EDS, SEM-BSE, and the microhardness test. The results show that with the increase of WQSMS, the workability of mortar and concrete decreased, while the mechanical strength increased first and then decreased. The mechanical strengths of them reached the peak when the WQSMS addition reached 50%. The flexural and compressive strengths of the mortar increased by 40% and 9.7%, respectively, while the tensile splitting strength and compressive strength of the concrete increased by 11.9% and 3.4%, respectively. The microstructure of the interfacial transition zone(ITZ) was greatly enhanced by WQSMS, which decreased the porosity by 10.49%, decreased the thickness by 27.27%, and increased the microhardness by 11.0%. However, when the content surpasses 50%, the mechanical strength of mortar and concrete declined due to the loose porosity and poor mechanical strength of WQSMS, and there was insufficient cementitious material to fill these holes. Nonetheless, with 100% content, the mortar maintained its high-performance status, with a flexural strength of 8.0 MPa and a compressive strength of 47.9 MPa, and the concrete still fulfilled the specifications of regular concrete C40. Both the fine aggregate and the cementitious material were composed of solid waste, showing potential environmental benefits and interesting green products for future studies.

Structural aspects of concrete incorporating recycled coarse aggregates from construction and demolished waste

The study explores the potential of recycling construction and demolition waste into recycled coarse aggregates (RCA) to decrease waste generation and carbon footprint, using a standard compacting effort to calculate compressive strength and particle packing density in a specific cylindrical volume. This study investigates the impact of RCA on concrete’s workability, compressive strength, flexural, split tensile, drying shrinkage, electrical resistivity, rapid chloride penetration, and microstructural characteristics using XRD, SEM, and EDAX. Test findings showed that increasing the replacement percentage beyond the optimum value (RCA 25) had detrimental effects on the strength and microstructure of the concrete. RCA 25 has a higher compressive, flexural, and split tensile strength in the order of 11.56%, 3.06%, and 5.17% respectively compared to reference concrete, as well as 5.23% increase in drying shrinkage, 8.79% higher electrical resistivity, and 4.68% higher resistance to chloride penetration than reference concrete.

Sawdust Ash as a Sustainable Binder in Geopolymer Concrete: A Study on Split Tensile Strength

Geopolymer concrete can serve as a more environmentally friendly alternative to traditional cement by reducing the release of greenhouse gases during production. It is composed of an alkaline liquid containing sodium or potassium silicate and sodium or potassium hydroxide, along with a source material rich in silica and alumina. In a recent investigation, thirty geopolymer concrete samples were created in the laboratory using a mix design approach. The study focused on optimizing the split tensile strength of the concrete, particularly when using sawdust ash as the source material. The research revealed that subjecting sawdust ash to pyrolysis in the absence of oxygen significantly affects its pozzolanic characteristics and, consequently, the properties of the concrete. The study determined the optimum split tensile strength of sawdust ash-blended geopolymer concrete to be 2.9899 MPa. The specific concentration ratios of NaOH, Na₂SiO₄ to NaOH, sawdust ash in the binder, water to binder, and activator to sawdust ash were found to be 9.75, 1.8750, 37.5, 0.025, and 2.5, respectively. Additionally, computer programs developed using MATLAB were employed to optimize and predict the ideal mix proportion of sawdust ash-based geopolymer concrete.

Partial Substitution of Cement and Fine Aggregate with Waste Paper Sludge Powder and Quarry Dust in Enhancing the Strength Parameters of Concrete

The main compositions of concrete are sand and cement. A swift construction operation leads to a shortage of these materials. The concrete industry consumes natural materials in large quantities like river sand keeping our environment in check we need to make our concrete industry more lasting by using alternative binders to make it sustainable. Squander materials, for example, Quarry dust which is the result of squashed stone and waste paper sludge coming from the paper producing businesses leads to different issues like dumping. The chance of utilizing Waste Paper Sludge Powder as a halfway trade for concrete and Quarry dust as an incomplete swap for fine aggregates is explored in this research. The substitution levels of cement with WPSP are 0.8%, 1.3%, 2.3% and 3.3%.Though the substitution levels of fine aggregates with Quarry Dust are 16%, 26%, 36, and 46%. For WPSP specimens it was seen that at a 1.3% substitution level compressive strength is expanded by 12% at 28 days when contrasted with the control blend which has a 0% substitution level. Flexural and split tensile are likewise expanded by 15% and 14%. While at 1.3%WPSP and 36% Quarry Dust in combination shows a 24% improvement in compressive strength when contrasted with the control blend. Flexural and split tensile strength increments by 24% & 29%, respectively. M25 concrete grade is designed as per IS 456:2000.

A Comprehensive Performance Evaluation of GGBS-Based Geopolymer Concrete Activated by a Rice Husk Ash-Synthesised Sodium Silicate Solution and Sodium Hydroxide

Commercial sodium hydroxide (NaOH) and sodium silicate (SS) are commonly used as alkaline activators in geopolymer concrete production despite concerns about their availability and associated CO2 emissions. This study employs an alternative alkaline activator (AA) synthesized from a sodium silicate alternative (SSA) solution derived from rice husk ash (RHA) and a 10 M sodium hydroxide solution. The initial phase established an optimal water-to-binder (W/B) ratio of 0.50, balancing workability and structural performance. Subsequent investigations explored the influence of the alkali/precursor (A/P) ratio on geopolymer concrete properties. A control mix uses ordinary Portland cement (OPC), while ground granulated blast-furnace slag (GGBS)-based geopolymer concrete—GPC mixes (GPC1, GPC2, GPC3, GPC4) vary the A/P ratios (0.2, 0.4, 0.6, 0.8) with a 1:1 ratio of sodium silicate to sodium hydroxide (SS: SH). The engineering performance was evaluated through a slump test, and unconfined compressive strength (UCS) and tensile splitting (TS) tests in accordance with the appropriate standards. The geopolymer mixes, excluding GPC3, offer suitable workability; UCS and TS, though lower than the control mix, peak at an A/P ratio of 0.4. Despite lower mechanical strength than OPC, geopolymers’ environmental benefits make them a valuable alternative. GPC2, with a 0.4 A/P ratio and 0.5 W/B (water to binder) ratio, is recommended for balanced workability and structural performance. Future research should focus on enhancing the mechanical properties of geopolymer concrete for sustainable, high-performance mixtures.