Characteristic compressive strength of a geo polymer concrete

Padmakar, M.; Borigarla, Barhmaiah; Priyanka, M

doi:10.1016/j.matpr.2020.07.656

Cited by 25 publications

(13 citation statements)

References 9 publications

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“…According to research, the inclusion of nano-TiO 2 causes the development of more hydrated structures. Compared to the standard GP (without nano-CaCO 3 ), an additional crystalline phase of albite (AB) was detected as peaks with a greater intensity implying a more crystalline structure in nano-CaCO 3 added GPC [ 94 ].…”

Section: Influences Of Nanomaterials On Fresh and Hardened Properties...mentioning

confidence: 99%

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

et al. 2022

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The main objective of this review is to study some important nanomaterials and their impact on the performance of geopolymer concrete. This paper is an investigation into trends and technology in the development of different nanomaterials to develop higher structural performance geopolymer concrete. The effect of the alkaline to binder and sodium silicate to sodium hydroxide ratio on the performances of geopolymer performances is studied. The relationship between setting time and slump is evaluated through the ternary plot, the variation in compressive strength values is evaluated using the kernel density plot, and the relationship between split tensile and flexural strength is investigated using the scattering interval plot. Regression analysis is carried out among water absorption and bulk-density result values obtained from previous literature. As the molarity and alkaline to binder (A/B) ratios increase, the strength development of geopolymer concrete increases up to a specific limit. The addition of a small quantity of nanomaterials, namely, nano silica, nano alumina, carbon nano tubes, and nano clay, led to the maximum strength development of geopolymer concrete. Incorporating these nanomaterials into the geopolymer significantly refines the structural stability, improving its durability. The various products in GP composites emerging from the incorporation of highly reactive SEM, XRD, and FTIR analysis of nanomaterials reveal that the presence of nanomaterials, which enhances the rate of polymerization, leads to better performance of the geopolymer.

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Section: Influences Of Nanomaterials On Fresh and Hardened Properties...mentioning

confidence: 99%

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

et al. 2022

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“…In contrast, GGBS has angular particle shape; the larger surface area and high porosity of rich content of silica-based ingredients are the two factors affecting workability. The high amount of amorphous silica with porous structured particles in geopolymer paste increases the specific surface area leading to better reactivity GWP, which signifies a heterogeneous microstructure in which particles form agglomerations and become dense with a variety of particles [41][42][43][44]. GWP binders are high in Na ions, and the Na/Al molar ratio increases as fusion occurs.…”

Section: Effect Of Gwp On the Fresh State Of Gpcmentioning

confidence: 99%

“…As the molar concentration of alkaline agents is increased, that increases the slump of concrete. in conventional concrete, water plays a significant role in increasing the slump and admixture, but in GPC a similar role is played by water to solids ratio and alkali/binder ratio [40][41][42]45].…”

Section: Effect Of Gwp On the Fresh State Of Gpcmentioning

confidence: 99%

Evaluation of the Effect of Granite Waste Powder by Varying the Molarity of Activator on the Mechanical Properties of Ground Granulated Blast-Furnace Slag-Based Geopolymer Concrete

et al. 2022

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Industrial waste such as Ground Granulated Blast-Furnace Slag (GGBS) and Granite Waste Powder (GWP) is available in huge quantities in several states of India. These ingredients have no recognized application and are usually shed in landfills. This process and these materials are sources of severe environmental pollution. This industrial waste has been utilized as a binder for geopolymers, which is our primary focus. This paper presents the investigation of the optimum percentage of granite waste powder as a binder, specifically, the effect of molar and alkaline to binder (A/B) ratio on the mechanical properties of geopolymer concrete (GPC). Additionally, this study involves the use of admixture SP-340 for better performance of workability. Current work focuses on investigating the effect of a change in molarity that results in strength development in geopolymer concrete. The limits for the present work were: GGBS partially replaced by GWP up to 30%; molar ranging from 12 to 18 with the interval of 2 M; and A/B ratio of 0.30. For 16 M of GPC, a maximum slump was observed for GWP with 60 mm compared to other molar concentration. For 16 M of GPC, a maximum compressive strength (CS) was observed for GWP with 20%, of 33.95 MPa. For 16 M of GPC, a maximum STS was observed for GWP, with 20%, of 3.15 MPa. For 16 M of GPC, a maximum FS was observed for GWP, with 20%, of 4.79 MPa. Geopolymer concrete has better strength properties than conventional concrete. GPC is $13.70 costlier than conventional concrete per cubic meter.

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“…Increasing the amount of red mud in this system resulted in an almost consistent decrease in compressive strength. It used one type of red mud and three different types of fly ash as the source material to create a geopolymer that can be cured at ambient and higher temperatures [27][28][29]. Compared to previous class-F-based geopolymers, it was discovered that compressive strength of 15.2 MPa was attained after an average duration of ambient temperature curing at significantly lower sodium hydroxide content.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Alkaline Activator on the Strength Properties of Geopolymer Concrete

et al. 2022

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This study investigates the effects of red mud on the performance of geopolymer concrete in regard to fresh and mechanical properties. Red mud was used as a binder, and GGBS replaced the binder. Different proportions of red mud ranging from 0 to 30% with an interval of 2% and activator agents such as KOH and K2SiO3 for various alkaline-to-binder ratios such as 0.30, 0.40, and 0.50 were used; their effect on the fresh and mechanical properties of geopolymer concrete were the focusing parameter on the current study. Fresh properties such as setting time, slump, compaction factor, and vee-bee consistometer test, and mechanical properties such as compressive strength, split tensile strength, flexural strength, modulus of elasticity, and impact energy were studied. ANOVA and radar plot analysis were studied for various alkaline to binder (A/B) compressive strength results tested for 7 to 90 days. The increase of red mud quantity caused the decline of workability, but there was continuous enhancement of mechanical properties of GPC up to a specific limit. An alkaline-to-binder ratio of 0.4 shows excellent results compared with other ratios at ambient conditions for strength properties. ANOVA and radar plot reveal that A/B of 0.40 for 90 days shows excellent results compared with other ratios, and CS values vary in a linear manner.

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Characteristic compressive strength of a geo polymer concrete

Cited by 25 publications

References 9 publications

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

Evaluation of the Effect of Granite Waste Powder by Varying the Molarity of Activator on the Mechanical Properties of Ground Granulated Blast-Furnace Slag-Based Geopolymer Concrete

Optimization of Alkaline Activator on the Strength Properties of Geopolymer Concrete

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