Hybrid geopolymer paste from high calcium fly ash and glass wool: Mechanical, microstructure, and sulfuric acid and magnesium sulfate resistance characteristics

Saptamongkol, Adam; Sata, Vanchai; Wongsa, Ampol; Kroehong, Wunchock; Ekprasert, Jindarat; Chindaprasirt, Prinya

doi:10.1016/j.jobe.2023.107245

Cited by 6 publications

(5 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bernal et al [33] proved the lower rates of chloride permeability for GPC. This agrees with Adam [34] who stated that both chloride permeability and sorptivity are improved. This is certified to the increase in the concentration of the alkaline-activated binder.…”

Section: Introductionsupporting

confidence: 90%

The Efficiency of By-product- Based Geo-polymer Concrete

El-Nadoury

2023

Port-Said Engineering Research Journal

View full text Add to dashboard Cite

Geo-polymer concrete (GPC) and industrial byproducts have developed expeditiously as eco-benevolent substitutes for OPC. Whereas elevated curing temperature is essential. This research studies the applicability of producing byproduct-based GPC cured under ambient temperature. The effect of the incorporation of ceramic squander powder (CSP) and rice husk ash (RHA) is assessed. All the investigated mixtures contain 40% Slag, 10% fly ash (FA), and a 50% combination of CSP and RHA. Four different combinations of CSP/RHA; 10/40, 20/30, 30/20, and 40/10 are utilized. w/b ratios; 0.3, 0.4, and 0.45 are tested. Compressive, splitting tensile, and flexural strengths are examined as indicators of mechanical properties. Acid resistance, water absorption, sorptivity, and chloride permeability are evaluated as indicators of durability aspects. The results revealed that the 30/20 combination is optimum in terms of mechanical properties, while all combinations attained applicable durable properties compared to the control mix with 90% slag and 10% FA.

show abstract

Section: Introductionsupporting

confidence: 90%

The Efficiency of By-product- Based Geo-polymer Concrete

El-Nadoury

2023

Port-Said Engineering Research Journal

View full text Add to dashboard Cite

show abstract

“…The peak at 1000 m −1 is mainly caused by the tensile vibration of the silicate derivative Si-O-T (T = Si or Al), and the peak at 1000 cm −1 of the raw material, which corresponds to the peak in the geopolymer, shifted to 1112 cm −1 , which indicates that a geopolymerization reaction took place and the corresponding gelling substance was produced. The small peaks at 1020 cm −1 and 1000 cm −1 observed in the E-GP/SW-GP samples can be considered as indicators of CSH, which is expected to be caused by alkali activation [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Electrolytic Manganese Slag–Solid Waste-Based Geopolymers: Compressive Strength and Mn Immobilization

Mi,

Zhao,

et al. 2024

Materials

View full text Add to dashboard Cite

The massive stockpiling of electrolytic manganese residue (EMR) has caused serious environmental pollution. In this study, EMR, coal gangue (CG), and fly ash (FA) were used as raw materials to obtain the optimal mix ratio based on Design-Expert mixture design. The effects of activator modulus, liquid–solid (L/S) ratio, and curing temperature on the mechanical properties of geopolymers were investigated. The results showed that the compressive strength of the prepared geopolymer was 12.0 MPa, and the 28d leaching of Mn was 0.123 mg/L under the conditions of EMR:CG:FA = 0.43:0.34:0.23, L/S = 0.9, a curing temperature of 60 °C, and a curing time of 24 h. This indicates that the geopolymer is an environmentally friendly material with high compressive strength. The mineral composition of the geopolymer is mainly hydrated calcium silicate and geopolymer gel. In addition, a more stable new mineral phase, MnSiO3, was generated. The Fourier transform infrared (FTIR) spectrogram showed that the peak at 1100 m−1 was shifted to 1112 cm−1, which indicated that a geopolymerization reaction had occurred. Through scanning electron microscopy (SEM) and energy dispersive spectrum (EDS) analysis, it was identified that the geopolymerization produced a large amount of amorphous gelatinous substances with a relatively dense structure, the major elements being oxygen, silicon, aluminum, calcium, and sodium.

show abstract

“…Figure 5 shows the average compressive strength results for the alkali-activated material mixtures. Researchers' results have shown that high-calcium fly ash is suitable as a base material for geopolymer binders [28,64]. To better present the results of the mechanical tests, they have been summarized in the form of a table (Table 5).…”

Section: Mechanical Properties and Structure Observationmentioning

confidence: 99%

“…Geopolymers are typically produced from aluminosilicate-rich raw materials [20]. Currently, the most commonly used raw materials in geopolymers are fly ash [21][22][23], blast furnace slags [24][25][26], or metakaolin [27,28]. Fly ash and slag are finished wastes from energy processes for use in geopolymerization.…”

Section: Introductionmentioning

confidence: 99%

“…Other flexural strength results for individual types of alkaline-activated binders were as follows: R.M-10.51 MPa, R.PB.-5.56 MPa, Ch + M-7.23 MPa, Ch + PB-10.62 MPa, D + M-5.92 MPa, A + PB-8.01 MPa, Ch + D + M + PB-6.93 MPa, and Ch + D + A + PB-8.07 MPa.Figure5shows the average compressive strength results for the alkali-activated material mixtures. Researchers' results have shown that high-calcium fly ash is suitable as a base material for geopolymer binders[28,64].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Application of Industrial Waste Materials by Alkaline Activation for Use as Geopolymer Binders

Setlak,

Mikuła,

Łach

2023

Materials

View full text Add to dashboard Cite

The purpose of this study is to synthesize geopolymer binders as an environmentally friendly alternative to conventional cement using available local raw materials. Waste materials such as chalcedonite (Ch), amphibolite (A), fly ash from lignite combustion (PB), and diatomite dust (D) calcined at 900 °C were used to produce geopolymer binders. Metakaolin (M) was used as an additional modifier for binders based on waste materials. The base materials were subjected to fluorescence X-ray fluorescence (XRF) analysis and X-ray diffractometry (XRD) to determine chemical and phase composition. A laser particle size analysis was also performed. The various mixtures of raw materials were activated with a 10 M solution of NaOH and sodium water glass and then annealed for 24 h at 60 °C. The produced geopolymer binders were conditioned for 28 days under laboratory conditions and then subjected to microstructural analysis (SEM) and flexural and compressive strength tests. The best compressive strength results were obtained by the Ch + PB samples—more than 57 MPa, while the lowest results were obtained by the Ch + D+A + M samples—more than 20 MPa. On the other hand, as a result of the flexural strength tests, the highest flexural results were obtained by D + A + M + PB binders—more than 12 MPa, and the lowest values were obtained by binders based on Ch + D+A + M—about 4.8 MPa.

show abstract

Hybrid geopolymer paste from high calcium fly ash and glass wool: Mechanical, microstructure, and sulfuric acid and magnesium sulfate resistance characteristics

Cited by 6 publications

References 42 publications

The Efficiency of By-product- Based Geo-polymer Concrete

The Efficiency of By-product- Based Geo-polymer Concrete

Synthesis of Electrolytic Manganese Slag–Solid Waste-Based Geopolymers: Compressive Strength and Mn Immobilization

Application of Industrial Waste Materials by Alkaline Activation for Use as Geopolymer Binders

Contact Info

Product

Resources

About