Strength and Durability Studies on GGBS Concrete

Karri, Santosh Kumar; Rao, G. Venkateswara; Raju, P.

doi:10.14445/23488352/ijce-v2i10p106

Cited by 57 publications

(10 citation statements)

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“…The same result show by Chandra Thakur & Kumar, (2016) which show 40% is the optimum percentage of cement replacement on their compressive strength. The same trends also were obtained by Kumar Karri (2015). This show that the increase of GGBS until 40% gives with certain amount of superplasticizer and the good water-cement ratio gives higher compressive strength.…”

Section: Compressive Strength Testsupporting

confidence: 82%

Fresh Properties and Compressive Strength of 3D Printing Concrete Containing GGBS as Partial Cement Replacement

Juhari¹,

Ali²,

Abdullah³

et al. 2022

JSMBE

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3D printingconcrete is a particular mix of concrete that has been specially prepared to flow easily through the printing nozzle. The foundations of 3D printingconcrete constructions are stacked, with each layer put on top of a preceding layer of pumped concrete. Despite its potential, the construction industry has been confronted with several material issues. The cement replacement in the concrete has also been intensively studied, but in 3D printingconcrete, this matter has not been seen clearly. It still cannot be seen whether the cement replacement produces a good result for the 3D printed concrete. This research investigated the fresh characteristics and compressive strength of 3D printingconcrete using GGBS as a partial cement replacement in the mixture. In addition, the optimal proportion of GGBS as a partial cement replacement in 3D printingconcrete is also evaluated. In this study, the fresh properties of 3D printingconcretewere examined by a flow table test, a buildability test, and an extrudability test, while compressivestrength was assessed for the mechanical properties. The percentage of GGBS used variesfrom 20% to 50% with a 10% increment by weight of cement, and the water-cement ratio was fixed at 0.5. The cube specimen for the compression test was 50 mm x 50 mm x 50 mm and was cured for 7 and 28 days. The findings show that the flowability ofthis 3D printingconcrete increased as the percentage of GGBS increased. All of the specimens also passed the buildability and extrudability tests. The compressive strength of this 3D printingalso increased as the percentage increased, but it decreased back at 50% GGBS replacement. Overall, this experiment shows that 40% GGBS replacement is the optimum proportion as cement replacement in 3D printingconcrete as it shows the highest compressive strength, which is 57.3 MPa.

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Section: Compressive Strength Testsupporting

confidence: 82%

Fresh Properties and Compressive Strength of 3D Printing Concrete Containing GGBS as Partial Cement Replacement

Juhari¹,

Ali²,

Abdullah³

et al. 2022

JSMBE

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“…According to Cervantes and Roesler [28], adding GGBFS ingredients as a PC replacement in concrete increased the compressive and flexural strengths of concrete at 28 days. Karrri et al [29] investigated concrete made of M20 and M40 grade containing 30% to 50% of GGBFS as a PC replacement. It was observed that the inclusion of GGBFS as a cementitious material in the mixture improved the split tensile, compressive, and flexural strengths of the hardened concrete at 28 days.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Corn Cob Ash as Fine Aggregate and Ground Granulated Blast Furnace Slag as Cementitious Material in Concrete

et al. 2021

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Cementitious and recycled materials that have the potential to improve various properties of concrete have attracted the attention of many researchers recently. Different types of cementitious and recycled materials seem to possess certain unique properties to change cement concrete. This experimental study aims to investigate the impact of ground granulated blast furnace slag (GGBFS) and corn cob ash (CCA) as a partial replacement material for Portland cement (PC) and fine aggregate (FA), respectively, on fresh and hardened concrete properties, as well as the embodied carbon of concrete. The concrete mix was blended with 5-20% of GGBFS and 10-40% of corn cob ash, both individually and combined. A total of 300 concrete specimens were made to achieve the targeted strength of 25 MPa at a 0.50 water/cement ratio and cured at 28 days. It is observed that the workability of fresh concrete is lowered as the dosages of GGBFS and CCA increase in the mixture. Moreover, the compressive and split tensile strengths are augmented by 10.94% and 9.15%, respectively, at 10% of GGBFS by the weight of PC at 28 days. Similarly, the compressive and split tensile strengths are augmented by 11.62% and 10.56%, respectively, at 30% of CCA by the weight of FA at 28 days. Moreover, the combined use of 10% of GGBFS as a cementitious ingredient along with 30% of fine aggregate replaced with CCA in concrete provides the highest compressive and splitting tensile strength, with 16.98% and 13.38% at 28 days, respectively. Furthermore, the density and water absorption of concrete were reduced with increasing dosages of GGBFS and FA in concrete at 28 days. In addition, the embodied carbon and energy were also reduced as the replacement content of GGBFS along with CCA increased in concrete. It is concluded that 10% of GGBFS and 30% of CCA are the optimum percentages for structural applications to reduce the use of cement as well as the cost of the project.

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“…So, it is very important to study the life of the concrete based on durability aspects of special concretes along with the strength parameters. Durability includes the effect on quality and serviceability of concrete when exposed to different exposure conditions such as sulfate, chloride, acid, alkaline, seawater and normal water (Sunil et al , 2017; Do et al , 2019; Kumar Karri et al , 2015). By exposing concrete to different exposure conditions the durability of concrete can be assessed.…”

Section: Introductionmentioning

confidence: 99%

Durability and microstructure study of alkali-activated slag concrete with quartz sand subjected to different exposure conditions

Karri

Raju

Veerni

2021

JEDT

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Purpose One of the sources for the increase in the carbon footprint on the earth is the manufacturing of cement, which causes a severer environmental impact. Abundant research is going on to diminish CO2 content in the atmosphere by appropriate utilization of waste by-products of industries. Alkali-activated slag concrete (AASC) is an innovative green new concrete made by complete replacement of cement various supplementary cementitious raw materials. Concrete is a versatile material used in different fields of structures, so it is very important to study the durability in different exposures along with the strength. The purpose of this paper is to study the performance of AASC by incorporating quartz sand as fine aggregate under different exposure conditions. Design/methodology/approach The materials for this innovative AASC are selected based on preliminary studies and literature surveys. Based on numerous trials a better performance mix proportion of AASC with quartz sand is developed with 1:2:4 mix proportion, 0.8 alkali Binder ratio, 19 M of NaOH and 50% concentration of Na2SiO3. Subsequently, AASC cubes are prepared and exposed for 3, 7, 14, 28, 56, 90, 112, 180, 252 and 365 days in ambient, acid, alkaline, sulfate, chloride and seawater and tested for compressive strength. In addition, to study the microstructural characteristics, scanning electron microscope (SEM), energy dispersive X-ray analysis and X-ray diffraction analysis was also performed. Findings Long-term performance of AASC developed with quartz sand is very good in the ambient, alkaline environment of 5% NaOH and seawater with the highest compressive strength values of 51.8, 50.83 and 64.46, respectively. A decrease in compressive strengths was observed after the age of 14, 56 and 112 days for acid, chloride and sulfate exposure conditions, respectively. SEM image shows a denser microstructure of AASC matrix for ambient, alkaline of 5% NaOH and seawater. Research limitations/implications The proposed AASC is prepared with a mix proportion of 1:2:4, so the other proportions of AASC need to verify. In general plain, AASC is not used in practice except in few applications, in this work the effect of reinforced AASC is not checked. The real environmental exposure in fields may not create for AASC, as it was tested in different exposure conditions in the laboratory. Practical implications The developed AASC is recommended in practical applications where early strength is required, where the climate is hot, where water is scarce for curing, offshore and onshore constructions exposed to the marine environment and alkaline environment industries like breweries, distilleries and sewage treatment plants. As AASC is recommended for ambient air and in other exposures, its implementation as a construction material will reduce the carbon footprint. Originality/value The developed AASC mix proportion 1:2:4 is an economical mix, because of low binder content, but it exhibits a higher early age compressive strength value of 45.6 MPa at the age of 3 days. The compressive strength increases linearly with age from 3 to 365 days when exposed to seawater and ambient air. The performance of AASC is very good in the ambient, alkaline environment and seawater compared to other exposure conditions.

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Strength and Durability Studies on GGBS Concrete

Cited by 57 publications

References 0 publications

Fresh Properties and Compressive Strength of 3D Printing Concrete Containing GGBS as Partial Cement Replacement

Fresh Properties and Compressive Strength of 3D Printing Concrete Containing GGBS as Partial Cement Replacement

Utilization of Corn Cob Ash as Fine Aggregate and Ground Granulated Blast Furnace Slag as Cementitious Material in Concrete

Durability and microstructure study of alkali-activated slag concrete with quartz sand subjected to different exposure conditions

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