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NaOH Molarity's Impacts on SCGC's Workability and Durability with Ecologically Friendly Industrial By-Products

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The objective of the analysis is to investigate the workability and durability properties of self-compacting geopolymer concrete (SCGC) based on fly ash and GGBS on various NaOH molarities. A system of trial and error was employed to achieve the SCGC mix ratio. By conducting workability properties test such as slump flow, T50 slump flow, V-funnel, and L-box and At 28, 56 and 90 days, durability properties such as water absorption, sulphuric acid attack and sorptivity were tested. The specimens have been cured for 24 hours in the oven at 70 ° C, and environmental healing is accompanied by the test days respectively. For all the molarities including 8, 10 and 12 M with a constant binding content of 400 kg / m3, the fly ash mass fraction was changed by GGBS by 0, 30, 50, and 70 per cent by weight. In all molarities, the fluid to binder ratio of 0.47 by mass has been kept constant and the S.P dosage has remained consistent with 0% replacement and 4% with 30, 50 and 70% replacement and the water content has therefore changed accordingly. The experimental result showed lower workability parameters such as slump flow and L-box ratios with increased molarity and GGBS content, increased T50 slump flow and increased V-Funnel with increased molarity and GGBS content, and the whole study was performed as suggested by the EFNARC guidelines. Durability properties such as water absorption and sorptiveness have shown good resistance with an increase of the GGBS content and an increase in molarity. Seventy percent fly-ash replacement by GGBS showed more strength degradation when held at 5percent concentration in the sulphuric acid medium. Hence SCGC can be a better replacement for normal OPC concrete both in terms of strength and durability with reduced CO2 emission.
Title: NaOH Molarity's Impacts on SCGC's Workability and Durability with Ecologically Friendly Industrial By-Products
Description:
The objective of the analysis is to investigate the workability and durability properties of self-compacting geopolymer concrete (SCGC) based on fly ash and GGBS on various NaOH molarities.
A system of trial and error was employed to achieve the SCGC mix ratio.
By conducting workability properties test such as slump flow, T50 slump flow, V-funnel, and L-box and At 28, 56 and 90 days, durability properties such as water absorption, sulphuric acid attack and sorptivity were tested.
The specimens have been cured for 24 hours in the oven at 70 ° C, and environmental healing is accompanied by the test days respectively.
For all the molarities including 8, 10 and 12 M with a constant binding content of 400 kg / m3, the fly ash mass fraction was changed by GGBS by 0, 30, 50, and 70 per cent by weight.
In all molarities, the fluid to binder ratio of 0.
47 by mass has been kept constant and the S.
P dosage has remained consistent with 0% replacement and 4% with 30, 50 and 70% replacement and the water content has therefore changed accordingly.
The experimental result showed lower workability parameters such as slump flow and L-box ratios with increased molarity and GGBS content, increased T50 slump flow and increased V-Funnel with increased molarity and GGBS content, and the whole study was performed as suggested by the EFNARC guidelines.
Durability properties such as water absorption and sorptiveness have shown good resistance with an increase of the GGBS content and an increase in molarity.
Seventy percent fly-ash replacement by GGBS showed more strength degradation when held at 5percent concentration in the sulphuric acid medium.
Hence SCGC can be a better replacement for normal OPC concrete both in terms of strength and durability with reduced CO2 emission.

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