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Mechanical properties (average values of two specimens) and curing time of GPBs obtained using 4 curing methods.
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In geopolymerbricks (GPBs), fly ash content, which is waste from power plants, is converted into bricks by chemical treatment. GPBs can be dried by using appropriate curing methods. Conventionally, electric oven curing is one of the prominent methods. Using a solar dryer instead of an electric oven provides the added advantage of saving high-grade...
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... section interprets the results that have been obtained in this research study. The average values of the compressive strength, tensile split strength, and flexural strength test results are shown in Table 4. The following has been inferred from the test results: Electric oven drying is more uniform in nature when compared to solar drying. ...Context 2
... per modified guidelines for geopolymer concrete mix design using Indian standards, the target compressive strength is around 30 MPa [2,3], but the experimental result obtained was 38.50 MPa in solar drying with a PCM, as shown in Figure 8 and Table 4. For geopolymers, tensile split strength of 4.9 MPa was obtained in solar drying with a PCM, as shown in Figure 9 and Table 4. ...Context 3
... per modified guidelines for geopolymer concrete mix design using Indian standards, the target compressive strength is around 30 MPa [2,3], but the experimental result obtained was 38.50 MPa in solar drying with a PCM, as shown in Figure 8 and Table 4. For geopolymers, tensile split strength of 4.9 MPa was obtained in solar drying with a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. pared to all other methods. ...Context 4
... geopolymers, tensile split strength of 4.9 MPa was obtained in solar drying with a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. pared to all other methods. ...Context 5
... per modified guidelines for geopolymer concrete mix design using Indian standards, the target compressive strength is around 30 MPa [2,3], but the experimental result obtained was 38.50 MPa in solar drying with a PCM, as shown in Figure 8 and Table 4. For geopolymers, tensile split strength of 4.9 MPa was obtained in solar drying with a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. a PCM, as shown in Figure 9 and Table 4. ...Context 6
... geopolymers, tensile split strength of 4.9 MPa was obtained in solar drying with a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. a PCM, as shown in Figure 9 and Table 4. ...Context 7
... geopolymers, tensile split strength of 4.9 MPa was obtained in solar drying with a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. Figure 9. GPB tensile split strength comparison of all four methods of curing. . ...Context 8
... flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. a PCM, as shown in Figure 9 and Table 4. A flexural strength of 6.2 MPa was obtained in solar drying with a PCM, as shown in Figure 10 and Table 4. Figure 9. GPB tensile split strength comparison of all four methods of curing. . ...Context 9
... it is evident from Table 4 that solar-dried bricks with a PCM and without a PCM exhibit 7.84% and 1.7% higher compressive strength, 34.2% and 12.3% higher tensile split strength, and 25.25% and 15.15% higher flexural strength when compared to electric-oven-dried bricks, respectively. Also, solar drying with a PCM shows 6.1% higher compressive strength, 19.5% higher tensile split strength, and 8.1% higher flexural strength when compared to solar drying without a PCM. ...Context 10
... is due to the effect of the PCM which captures more heat flux in the form of heat storage, giving rise to a hotter and more uniform atmosphereinside the solar dryer when compared to the solar dryer without a PCM. Experimentally, it is evident from Table 4 that solar-dried bricks with a PCM and without a PCM exhibit higher compressive strength, tensile split strength, and flexural strength when compared to electric-oven-dried bricks. This could be due to the effect of the ambient, which is hotter when compared to that for electric drying, which occurs inside a room. ...Similar publications
The escalating demand for construction materials driven by rapid population growth has heightened the reliance on cement binders, resulting in increased CO2 emissions from the cement industry. Geopolymers, considered environmentally friendly alternatives, have been explored in various studies to address this challenge. This research specifically in...
Citations
... With the vigorous development of new energy, phase change heat storage technology has been widely applied in the development of sustainable energy because it offers stable energy storage [1][2][3], small device volume [4][5][6][7], and broad temperature adaptability [8,9]. However, the thermal conductivity of phase change materials (PCMs) is usually low; scholars have improved the heat transfer performance of thermal energy storage units (TESUs) by modifying the structure of the energy storage devices [10]. ...
In order to enhance the heat transfer performance of a phase change thermal energy storage unit, the effects of trapezoidal fins of different sizes and arrangement modes were studied by numerical simulation in the heat storage and release processes. The optimal enhancement solution was obtained by comparing the temperature distribution, instantaneous liquid-phase ratio, solid–liquid phase diagram and comprehensive heat storage and release performance of the thermal energy storage unit under different fin sizes. During the heat storage process, the results show that when the ratio of the length of the upper and lower base of the trapezoid h1/h2 is 1:9, the heat storage time is shortened by 9.03% and 18.21% compared with h1/h2 = 3:7 and 5:5, respectively. During the heat release process, the optimal heat transfer effect is achieved when h1/h2 = 5:5. To further improve the heat transfer effects, the energy storage unit is placed upside down; then, the least time is achieved when h1/h2 = 2:8. When heat storage and release are considered together, the energy storage unit with h1/h2 = 2:8 takes the shortest time to melt in upright placement and then to solidify in upside-down placement.
