Waste ceramic powder-based geopolymer mortars: Effect of curing temperature and alkaline solution-to-binder ratio

Shoaei, Parham; Musaeei, Hamid Reza; Mirlohi, Farinaz; Zamanabadi, Saeid Narimani; Ameri, Farshad; Bahrami, Nasrollah

doi:10.1016/j.conbuildmat.2019.116686

Cited by 110 publications

(21 citation statements)

References 55 publications

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“…For reference specimens, that is, without the addition of the glass waste, the increase in the molar ratio causes a significant increase in the apparent specific mass, since the mixture should have a higher concentration of precursors, which are the granulated materials of mixture used. When adding the waste, it is observed that in smaller ratios, such as 2.5 and 3, there was an increase in the apparent specific mass, which may have been caused by the low reactive activity of the waste within the matrix, which ended up contributing only in pore filling 38 …”

Section: Resultsmentioning

confidence: 99%

Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process

Azevedo¹,

Marvila²,

Rocha³

et al. 2020

Int J Applied Ceramic Tech

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The production process of ceramic roof tiles requires a large consumption of natural raw material, such as clay, and energy consumption in the sintering process. Thus, the objective of this research was the development of more ecological tile for civil construction, adopting the process of geopolymerization, which does not require burning, and the use of glass polishing waste, in partial replacement of natural raw material. Prismatic specimens were made with a ratio of alkaline solution/ (metakaolin + waste) = 0.26 and variation of the curing time in 7, 28, and 60 days, and a ratio of precursors with SiO 2 /Al 2 O 3 varying in 2.5, 3.0, 3.5, and 4.0 for the evaluation of technological properties such as apparent specific mass, linear shrinkage, water absorption, and mechanical resistance to flexion, in addition to microstructural evaluations and the physical, chemical, and mineralogical characterization of the waste. The results showed that the glass waste had potential for use as a precursor in the geopolymerization process, and that the specimens with a 7 days cure and a SiO 2 /Al 2 O 3 = 4 ratio are the most recommended for the production of roof tiles for civil construction. K E Y W O R D S ceramic roof tiles, geopolymerization, glass polishing waste How to cite this article: de Azevedo ARG, Marvila MT, Rocha HA, Cruz LR, Vieira CMF. Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process. Int

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Section: Resultsmentioning

confidence: 99%

Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process

Azevedo¹,

Marvila²,

Rocha³

et al. 2020

Int J Applied Ceramic Tech

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“…Figure 6 compares the FS values measured from RNa, RK, and RNaS samples with natural aging with different geopolymers found in the literature. The following materials were collected from the literature: commercial metakaolin (GM) activated with sodium silicate/sodium hydroxide solution [35], ceramic residue (GPM 0.6)-activated alkaline activated with sodium silicate/sodium hydroxide solution [46], chamotte residues molded and pressed (CM and CP, respectively) alkali activated with potassium hydroxide/sodium silicate solution [31], Metakaolin HP Ultra molded and pressed (MM and MP, respectively) alkali activated with hydroxide/sodium silicate solution [31], fly ash with a proportion of 15% granulated blast furnace slag (AA3) alkali activated with sodium silicate solution [47], blast furnace slag and fly ash (50FA1.00) alkali active with Na 2 SiO 3 /NaOH solution [48], geopolymeric concrete prepared using a Class F fly ash (A40 S00), and alkali activated with 114.3 kg/m 3 Na 2 SiO 3 and 45.7 kg/m 3 NaOH solution and 100 kg/m 3 of Na 2 SiO 3 and 40 NaOH kg/m 3 solution (A35 S00) [49], fly ash-based mixtures (AF-AS) and ground granulated blast furnace slag (GGBS) alkali activated with sodium hydroxide/sodium silicate solution [50], low-calcium fly ash (GPC) alkali activated with (103 kg/m 3 ) sodium hydroxide/(41 kg/m 3 ) sodium silicate solution [51].…”

Section: Durability Of Activated Samplesmentioning

confidence: 99%

Durability of Sustainable Ceramics Produced by Alkaline Activation of Clay Brick Residue

et al. 2021

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Alkali-activated materials (AAMs) were produced using residues from the red ceramic industry as a precursor, and sodium hydroxide (NaOH), potassium hydroxide (KOH), and sodium silicate (Na2SiO3) as alkaline activators. The effect of activators and curing conditions on physical-mechanical properties and durability were evaluated. The processing parameters (amount of water and consistency index) and the activation conditions (the activator contents and curing temperature) were defined based on an experimental design getting the flexural rupture module as the response. The durability behavior was evaluated by natural aging, accelerated aging (simulated rain test), exposure to the marine environment (salt fog), and acidic environments (HCl and H2SO4). The results showed that the NaOH- and KOH-activated samples exhibited inferior mechanical behavior than those activated with Na2SiO3. In the durability studies, due to leaching, there was a decrease in mechanical strength when samples are subjected to aggressive exposure conditions. However, the strength values are still higher than the minimum indicated for traditional ceramic applications.

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“…They pointed out that the compressive strength of geopolymers at high temperatures was affected by the concentration and content of NaOH, KOH, and Na 2 SiO 3 , and that these exhibited a good thermal stability even when heated up to 1000 °C. Shoei et al [ 22 ] showed that WCP can be used as a raw material for NaOH- and Na 2 SiO 3 -activated geopolymer mortar. They confirmed that the density and compressive strength were affected by the ratio of the alkaline solution to the binder and the curing temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Waste Ceramic Powder on Properties of Alkali-Activated Blast Furnace Slag Paste and Mortar

et al. 2021

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Every year, ceramic tile factories and the iron smelting industry produce huge amounts of waste ceramic tiles and blast furnace slag (BFS), respectively. In the field of construction materials, this waste can be used as a raw material for binders, thus reducing landfill waste and mitigating environmental pollution. The purpose of this study was to mix waste ceramic powder (WCP) into BFS paste and mortar activated by sodium silicate and sodium hydroxide to study its effect on performance. BFS was partially replaced by WCP at the rate of 10–30% by weight. Some experimental studies were conducted on, for example, the fluidity, heat of hydration, compressive strength testing, ultrasonic pulse velocity (UPV), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), electrical resistivity, sulfuric acid attack, and chloride ion diffusion coefficient. Based on the results of these experiments, the conclusions are: (1) increasing the amount of waste ceramic powder in the mixture can improve the fluidity of the alkali-activated paste; (2) adding waste ceramic powder to the alkali-activated mortar can improve the resistance of the mortar to sulfuric acid; (3) adding waste ceramic powder to the alkali-activated mortar can increase the diffusion coefficient of chloride ions; (4) the early strength of alkali-activated mortar is affected by the Ca/Si ratio, while the later strength is affected by the change in the Si/Al ratio.

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Waste ceramic powder-based geopolymer mortars: Effect of curing temperature and alkaline solution-to-binder ratio

Cited by 110 publications

References 55 publications

Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process

Use of glass polishing waste in the development of ecological ceramic roof tiles by the geopolymerization process

Durability of Sustainable Ceramics Produced by Alkaline Activation of Clay Brick Residue

Effect of Waste Ceramic Powder on Properties of Alkali-Activated Blast Furnace Slag Paste and Mortar

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