Experimental Analysis of Geopolymer Concrete: A Sustainable and Economic Concrete Using the Cost Estimation Model

Verma, Manvendra; Upreti, Kamal; Vats, Prashant; Singh, Sandeep Kumar; Singh, Prashant; Dev, Nirendra; Mishra, Durgesh Kumar; Tiwari, Basant

doi:10.1155/2022/7488254

Cited by 40 publications

(8 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is due to the fact that as the sand/ash ratio increased, the split tensile strength decreased. With regard to geopolymer concrete comprising 100% GGBS, similar results can be found in the work of Verma et al [11] and Abdullah et al [13]. The maximum split tensile strength obtained for GCF20G80 was 4.2 N/mm 2 , which was 60% higher than the tensile strength of GCF100G0.…”

Section: Split Tensile Strengthsupporting

confidence: 85%

“…In contrast to fly ash-based GC, fly ash GGBS-based Geopolymer concrete, combined with an alkaline solution, showed more substantial results after 28 days of ambient curing; this prompted the tensile strength to steadily decline [9]. be found in the work of Verma et al [11] and Abdullah et al [13]. The maximum split tensile strength obtained for GCF20G80 was 4.2 N/mm 2 , which was 60% higher than the tensile strength of GCF100G0.…”

Section: Split Tensile Strengthmentioning

confidence: 87%

“…Conventional concrete has a longer setting time, it is denser, and a greater level of drying shrinkage occurs than with Geopolymer Concrete (GPC). Although the GPC concrete had a significantly higher initial three-day strength than the OPC concrete, the compressive strength of the two concretes showed identical trends after 28 days [11]. The alkaline activator/fly ash ratio was found to have a significant impact on the compressive strength of the fly ash-based geopolymer.…”

Section: Introductionmentioning

confidence: 84%

See 2 more Smart Citations

Influence of Slag-Based Geopolymer Concrete on the Seismic Behavior of Exterior Beam Column Joints

Maniarasan¹,

Palanisamy²,

Sridhar³

et al. 2023

Sustainability

View full text Add to dashboard Cite

In reinforced concrete (RC) constructions, the beam-column junctions are very sensitive to lateral and vertical loads. In the event of unforeseen earthquake and wind loads, this insufficient joint performance can lead to the failure of the entire structure. Cement industries emit a large amount of greenhouse gases during production, thus contributing to global warming. The nature of cement concrete is fragile. Cement output must be reduced in order to ensure environmental sustainability. Geopolymer concrete (GC), which is a green and low-carbon material, can be used in beam-column joints. M30 grade BBGC was developed and employed in the current study. Alkaline liquids are produced when sodium silicate and sodium hydroxide are mixed at room temperature. The alkaline liquid to fly ash ratio was fixed at 0.5, and the concentration of NaOH was fixed at 8 M. The mechanical properties of the Binary Blended Geopolymer concrete (BBGC), containing fly ash and GGBS, at proportions ranging from 0% to 100%, were investigated. This study was further expanded to examine the behavior of two groups of binary blended geopolymer concrete (BBGC) exterior beam-column joints, with cross sections of 230 mm × 120 mm and 170 mm × 120 mm. The column heights and lengths were both 600 mm under reverse cyclic loads in order to simulate earthquake conditions. The failure mechanism, ductility, energy absorption capacity, initial crack load, ultimate load carrying capacity, and structural performance was evaluated. The test findings showed that BBGC with 20% fly ash and 80% GGBS had the highest compressive strength and split tensile strength. When compared with other beam column joints, those containing 20% fly ash and 80% GGBS performed better under cyclic loading. The test findings imply that GGBS essentially enhances the joint performance of BBGC. The microstructural SEM and EDS studies revealed the reasons behind the improvement in strength of the GGBS fly ash-based Geopolymer concrete.

show abstract

Section: Split Tensile Strengthsupporting

confidence: 85%

Section: Split Tensile Strengthmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 84%

See 1 more Smart Citation

Influence of Slag-Based Geopolymer Concrete on the Seismic Behavior of Exterior Beam Column Joints

Maniarasan¹,

Palanisamy²,

Sridhar³

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…At elevated temperatures, the flexural strength was more vulnerable to the formation of microstructural defects, such as the propagation of fractures and the formation of porous structures. [77][78][79][80][81][82] Losses in compressive strength are varied from 31% to 85% in fibreless geopolymer specimens, but losses in polypropylene fibrous geopolymer specimens from 32% to 86%. This rate has risen considerably in comparison to samples lacking fibres.…”

Section: Ultrasonic Pulse Velocity Test (Upvt)mentioning

confidence: 99%

Investigation on the impact of elevated temperature on sustainable geopolymer composite

Verma,

Meena,

Singh

et al. 2023

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Geopolymer concrete (GPC) is an eco-friendly, sustainable, cementless and green concrete. It could be an alternative to the conventional concrete. In alkaline circumstances, the alumina and silica concentration in geopolymer concrete creates the geopolymer bond, while regular concrete creates C-S-H (calcium silicate hydrate bond). The final result of the geopolymer bond does not include any water. At elevated temperatures, geopolymer concrete would thus be more stable. Due to its greater strength and durability quality, geopolymer concrete may be the ideal replacement for ordinary portland cement (OPC) concrete. This research intends to examine how specimens of geopolymer concrete and regular concrete respond to exposure to increased temperatures between 100°C and 800°C. Mass loss, ultrasonic pulse velocity, compressive strength, X-ray diffraction, thermogravimetric analysis and derivative thermogravimetric analysis were all examined throughout the experimental examination. Both concrete specimens lose mass or weight as the exposure temperature rises; OPC concrete samples spalls at 600°C, while GPC sample fail at 800°C. GPC specimens lose around 12% of their original mass after being exposed to temperatures of 800°C, while OPC specimens lose about 7%. The GPC specimens maintained 60% of their initial compressive strength after being exposed to a temperature of 700°C, but the OPC concrete specimens only kept 52%. With each increase in exposure to extreme temperatures, the peaks of quartz and cristobalite are lowered. Only the form or structure of the mineral oxide would change; the chemical linkages would remain. The GPC samples subjected to temperatures of 100°C exhibit effective thermal stability than all other specimens exposed to extreme temperatures. As the exposure temperature rises, the GPC specimens become more thermally stable. According to the experimental findings, the GPC specimens’ bonding structure makes them more resistant to high temperatures than regular concrete specimens. Micropores are present in the voids of the geopolymer matrix, while mesopores and micropores are present in the voids of the OPC matrix. While OPC bonding is C-S-H formed by the hydration of lime and silica contained in the cement, the geopolymer bonding did not include the water content in the final or end result of geopolymerisation for strengthening.

show abstract

“…Hence a thirst of searching new products as replacement for cement has been generated and thus in 1945, Joseph Davidovits discovered Geopolymer concrete (GPC) which is termed as Carbon less concrete. This new product consists of aluminosilicate materials (kaolinite, feldspar) and industrial by products (flyash, metallurgical slag) as a substitute of cement satisfying the pozzolanic properties (1)(2)(3)(4) . To trigger these raw materials sodium hydroxide (NaOH), potassium hydroxide (KOH), sodium silicate (Na 2 SiO 3 ) and potassium silicate (K 2 SiO 3 ) are used as the main alkaline activators.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of the Mechanical Performance of Geo Polymer Concrete

Kumar,

Johnson,

Kumaran

2023

IJST

View full text Add to dashboard Cite

Objectives: To determine the important Mechanical properties and Elastic modulus of Geopolymer concrete (GPC). Methods: Four mix proportions of GPC using two molarities (12 and 14) of NaOH have been used to achieve M25 grade of GPC. Compressive strength, Tensile strength, Flexural strength and Young's Modulus (E GPC ) tests have been performed as per Codal provisions. Findings: The modulus of elasticity of GPC (E GPC ) for the four mixes has been determined experimentally and the average of four values was noted. With the help of this value,5000 random variables have been generated using Monte Carlo Technique and the average E GPC (for 5000 values) has also been determined. Finally, it has been perceived that the elastic modulus of GPC is nearly equal to that of OPC in contrast to the previous studies.

show abstract

Experimental Analysis of Geopolymer Concrete: A Sustainable and Economic Concrete Using the Cost Estimation Model

Cited by 40 publications

References 59 publications

Influence of Slag-Based Geopolymer Concrete on the Seismic Behavior of Exterior Beam Column Joints

Influence of Slag-Based Geopolymer Concrete on the Seismic Behavior of Exterior Beam Column Joints

Investigation on the impact of elevated temperature on sustainable geopolymer composite

Experimental Evaluation of the Mechanical Performance of Geo Polymer Concrete

Contact Info

Product

Resources

About