Development of GGBS-Based Geopolymer Concrete Incorporated with Polypropylene Fibers as Sustainable Materials

Thakur, Gaurav; Singh, Y. P.; Singh, Rajesh; Prakash, Chander; Saxena, Kuldeep K.; Pramanik, Alokesh; Basak, A.K.; Shankar, S.

doi:10.3390/su141710639

Cited by 14 publications

(5 citation statements)

References 50 publications

(62 reference statements)

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“…To study the mechanical properties, compressive strength of LiOH activated GGBS was measured and was compared with that of GGBS mortar samples activated with NaOH and Na 2 SiO 3 reported by Thakur et al [39]. LiOH activated GGBS samples showed ∼ 42% and ∼ 46% higher compressive strength than NaOH and Na 2 SiO 3 activated GGBS cubes at 7 days and 28 days, respectively.…”

Section: Discussionmentioning

confidence: 97%

“…Table 3 shows the 7 and 28 days strength of 10M LiOH activated GGBS mortar samples, along with a reference GGBS mortar sample prepared with 10M NaOH and Na 2 SiO 3 [39]. GGBS activated with 10M LiOH showed higher compressive strength after 7 days (7.52 MPa) and 28 days (13.3 MPa), as compared to that of GGBS activated with 10M NaOH and Na 2 SiO 3 (5.28 MPa and 9.09 MPa).…”

Section: Compressive Strengthmentioning

confidence: 99%

“…Compressive strength of LiOH activated GGBS compared with a reference GGBS activated with 10M NaOH and Na 2 SiO 3[39] …”

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confidence: 99%

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Synthesizing GGBS-LiOH based geopolymer with low embodied energy as a new alternative for construction

Srivast,

Singh

2023

Preprint

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Ground Granulated Blast furnace Slag (GGBS) is a promising alternative binder of Ordinary Portland Cement (OPC) due to its potential to reduce CO2 emissions and promote efficient waste recycling in the construction industry. However, the limited cementing capability of pure GGBS when hydrated with water necessitates the use of alkaline activators to enhance its hydration behavior. The present work establishes the use of lithium hydroxide (LiOH) as an effective alkaline activator for GGBS. As LiOH can be synthesized from the electrolytes of used lithium-ion batteries (LIBs), the study establishes the use of two waste products to potentially reduce the carbon footprint of the construction industry. Experimental results demonstrate that a 10M LiOH solution significantly enhances the cumulative heat evolution of GGBS (GGBS with DI water = 3.53 J/g, GGBS with LiOH = 127.59 J/g). LiOH activated GGBS exhibits the presence of hydration products such as LiASH and CSH from day 1 of hydration, while GGBS mixed with DI water shows CSH peaks only after 28 days. TGA results from long-term hydration studies indicate that LiOH activated GGBS forms a 73% higher quantity of hydration products as compared to cement paste samples. Additionally, LiOH activated GGBS demonstrates 42% and 46% higher compressive strength than GGBS activated with NaOH and Na2SiO3 at 7 and 28 days, respectively. Embodied energy analysis reveals that geopolymer prepared with GGBS and recycled LiOH leads to equivalent CO2 emissions reduction of ∼ 51% compared to NaOH based geopolymer and ∼ 55.50% compared to cement concrete

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Section: Discussionmentioning

confidence: 97%

Section: Compressive Strengthmentioning

confidence: 99%

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Synthesizing GGBS-LiOH based geopolymer with low embodied energy as a new alternative for construction

Srivast,

Singh

2023

Preprint

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“…The addition of admixture up to 2% by mass of fly ash improves the workability of fresh geopolymer concrete without segregation and bleeding [40]. Due to its better fire resistance property, the geopolymer concrete is more sustainable and durable concrete suitable to be used as construction material in the future [41]. Geopolymer concrete has better mechanical properties and a low carbon footprint, which makes it better construction material to be used in the near future in place of OPC concrete [42].…”

Section: Literature Reviewmentioning

confidence: 99%

An Investigation of Mechanical Properties of Fly Ash Based Geopolymer and Glass Fibers Concrete

et al. 2022

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This paper presents an innovative approach towards the development of a green concrete. The geopolymer is an environmentally friendly construction/repairing material. In addition, glass fibers are helpful to influence the strength properties and to reduce hair line cracks and bleeding in concrete. This study is based on the use of fly ash and glass fibers as a partial replacement of cement and, subsequently, its effect on compressive strength and split tensile strength of concrete. The geopolymer is manufactured after the process of geopolymerization between class F fly ash and alkali activator fluid (sodium silicate and sodium hydroxide). In geopolymer concretes (GPC), an inorganic polymer called aluminosilicate will act as a binder, the same as conventional concrete has Portland cement (OPC)-generated C-S-H gel. The glass fibers are added in the ratios of 3%, 6%, and 10% by weight of cement. To check the effect of geopolymer and glass fibers on compressive strength and split tensile strength of concrete, concrete cubes of size 150 × 150 × 150 mm and concrete cylinders of size 150 × 300 mm with or without geopolymer and glass fibers were casted and cured for 7, 14, 21, and 28 days. The compressive strength and split tensile strength of all concrete cubes and cylinders were determined by compression testing machine. The findings of the research study revealed that concrete having geopolymer and glass fibers used as a partial replacement of cement showed lesser strength as compared to conventional concrete. Concrete having glass fibers showed reduced workability and more segregation as compared to geopolymer concrete and normal concrete. However, the concrete made either with geopolymer or glass fibers is economical as compared to conventional concrete.

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“…Gaurav Thakur and et al aimed that partially replacing OPC with fly ash. GGBS and silica fume are reported [8]. The alkaline liquid used for geo-polymerization typically comprises the merging of sodium hydroxide and sodium silicate, which should be mixed at least 24 hours prior to application.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Performance of Two-Part Geopolymer Concrete Using Natural Binders and Activators

P V,

S Murali,

M Sivan

et al. 2024

E3S Web of Conf.

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The study investigates the characteristics of geopolymer concrete, employing sodium silicate and sodium hydroxide as activators instead of cement. In conventional construction practices, binders like fly ash, ground granulated blast furnace slag (GGBS) are commonly combined with alkali solutions. The manufacturing process of geopolymer relies on various alkaline activators. In this research, GGBS is replaced with sodium hydroxide and sodium silicate as activators. GGBS is recognized for its ability to enhance the workability and strength of geopolymer concrete, exhibiting favorable mechanical properties, resistance to chemicals, minimal shrinkage, environmental friendliness and exceptional durability. Furthermore, there are still certain drawbacks to geopolymer concrete, such as the fact that alkaline solutions are difficult to handle and apply because they are viscous, corrosive, difficult to transport, as well as challenging to store in huge quantities. A two part geopolymer concrete consists of two main components. An activator solution and a binder solution. The activator solution typically contains alkali metal hydroxides or silicates, while the binder solution contains aluminosilicate material such as fly ash or metakaolin. When mixed together, these solutions undergo a chemical reaction that forms a solid and durable geopolymer material.

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Development of GGBS-Based Geopolymer Concrete Incorporated with Polypropylene Fibers as Sustainable Materials

Cited by 14 publications

References 50 publications

Synthesizing GGBS-LiOH based geopolymer with low embodied energy as a new alternative for construction

Synthesizing GGBS-LiOH based geopolymer with low embodied energy as a new alternative for construction

An Investigation of Mechanical Properties of Fly Ash Based Geopolymer and Glass Fibers Concrete

An Experimental Study on Performance of Two-Part Geopolymer Concrete Using Natural Binders and Activators

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