A Study on the Red Clay Binder Stabilized with a Polymer Aqueous Solution

Kim, Jin-Sung; Choi, Hyeonggil; Rye, Hyeun-Min; Yoon, Keun‐Byoung; Lee, Dong‐Eun

doi:10.3390/polym13010054

Cited by 8 publications

(6 citation statements)

References 27 publications

(38 reference statements)

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“…The material remained under compression load for a residence time of 5 min for material stabilization, then the briquettes were ejected from the mould. During production, sawdust and binder pulps were weighed and mechanically mixed in a bowl 38,39 then water was added and blended to facilitate bonding in the resulting material charge which was fed into each moulding cups. Four sets of twin briquettes (designated as (AR1-8) were produced per unit operation (Fig.…”

Section: Operating Conditions For Briquettesmentioning

confidence: 99%

Development of a Multiple-Piston Hydraulic Briquetting Press HBP and Characterization of Newsprint Briquettes Produced

Segun,

Olajide,

Temidayo

et al. 2023

Trends Agric. Sci

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Background and Objective: Technical complexity, power source, cost, and product value are some challenging considerations in briquetting. Most of the available briquetting options are not sustainable due to these challenges, therefore, improved intermediate technology options requiring low energy consumption, high-energy product and acceptable combustion characteristics to meet these challenges are justified by developing a multiple-piston hydraulic briquetting press (HBP) and characterizing the briquettes produced from Gmelina arborea sawdust and newsprint binder. Materials and Methods: Sorted Gmelina arborea sawdust was mixed with pulped newsprint fibers in 5 ratios 10, 20, 30, 40 and 50%, respectively, to produce briquettes. The briquettes were characterized using American Society for Testing and Materials (ASTM), British Standard (BS), and International Standards Organization (ISO) test procedures to determine briquette characteristics. Results: The machine output capacity was 96 briquettes/hour, with low production cost (NGN40, 000.00). The briquettes produced are structurally stable with dimensions: 15.00 mm internal hole, 80.00 mm external diameter, and 60.00 mm height. Low binder briquettes (90:10% wt/wt) are fragile and brittle, while higher binder briquettes are strong and durable. Binder concentration positively improves the combustion characteristics, while the time spent cooking 1 kg of yam is not significantly different for rice. The briquettes thermal efficiency in stove was significantly affected by binder concentration and stove characteristics. Conclusion: The outcomes of this study including high machine output capacity, briquettes' stability, luminous flame and reduced smokiness showed positive quality contributions to densification study and hence, suitability for domestic heating.

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Section: Operating Conditions For Briquettesmentioning

confidence: 99%

Development of a Multiple-Piston Hydraulic Briquetting Press HBP and Characterization of Newsprint Briquettes Produced

Segun,

Olajide,

Temidayo

et al. 2023

Trends Agric. Sci

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“…The chemical composition of hwangto includes SiO 2 and Al 2 O 3 , making it similar to admixtures used in cement. Therefore, hwangto has been used as cement replacement material for CO 2 reduction, particularly in Asian countries such as China and the Republic of Korea [ 9 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Investigating Ultrasonic Pulse Velocity Method for Evaluating High-Temperature Properties of Non-Sintered Hwangto-Mixed Concrete as a Cement Replacement Material

2023

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Research on alternative cement materials is active worldwide, and in terms of fire safety, research on the evaluation of high-temperature properties of alternative materials is very important. Studies on concrete mixed with hwangto have been conducted by several researchers, but studies on high-temperature properties are lacking. Therefore, in this study, we evaluated the mechanical properties of concrete by partially replacing cement with non-sintered hwangto (NSH) at high temperatures. Normal concrete without NSH mixing and non-sintered hwangto concrete (NSHC) with HNT replacement were prepared as the specimens. The W/B of the concrete was set to 41 and 33, whereas the NSH replacement ratio was 15 and 30% of the cement. The target heating temperatures were set to 20, 100, 200, 300, 500, and 700 °C, and the heating rate was maintained at 1 °C/min. The following were calculated to evaluate the mechanical properties of the specimens: mass loss, compressive strength, ultrasonic pulse velocity (UPV), and modulus of elasticity. After analyzing the correlation between residual compressive strength and UPV, we proposed a compressive strength prediction model using different values of W/B for NSHC. Experimental results suggest that mass loss (%) shows a decreasing trend as NSH increases. In terms of residual compressive strength, residual compressive strength at W/B 41 increased with NSH replacement, whereas residual compressive strength values for W/B 33 were observed regardless of NSH replacement. Residual UPV showed a similar trend, regardless of the NSH replacement ratio, and residual modulus of elasticity was low at all W/B ratios as NSH replacement increased. A linear equation with a high correlation coefficient (R2) was proposed to predict compressive strength, and the linear value of W/B 41 was slightly higher than that of W/B 33.

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“…The thermal property of a grouting material is involved in energy efficiency, hence, affecting to the number and length of boreholes; the strength property of it affect to stability of the GCHP in situ [ 17 ]. Existing studies confirm the epoxy emulsion (EM) and acrylic polymer aqueous solution (APAS) mixture outperforms in strength development as a red clay stabilizer [ 18 , 19 , 20 , 21 ]. However, few study considers its energy efficiency and strength when it is mixed with sand for grouting of GCHP system.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Compressive Strength and Thermal Conductivity of Sand Stabilized with Epoxy Emulsion and Polymer Solution

Park

Park²,

Yoon

et al. 2022

Polymers

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This paper presents findings obtained by evaluating the compressive strength, thermal conductivity, and durability of sand cylinder specimens stabilized with either epoxy emulsion (EM), acrylic polymer aqueous solution (APAS), EM-APAS mixture, or EM-APAS-lime mixture. Given the data obtained from the laboratory test, simulation analysis that uses a heat transfer fluid model of a ground-coupled heat pump (GCHP) system confirms the EM-APAS-lime binder performs best in the compressive strength and thermal conductivity; EM-APAS mixture performs best in the durability. However, the slake durability index of specimens containing EM-APAS-lime is equal to or greater than 80%. In addition, the compressive strength of sand stabilized with the EM-APAS-lime mixture is more than three times that of sand stabilized with cement. The thermal conductivity of sand stabilized with cement and that of sand treated with EM-APAS-lime mixture are 0.1 W/m·K and 0.9–1 W/m·K, respectively. It is confirmed that the heat collection of sand stabilized with EM-APAS-lime outperforms five times over that of sand stabilized with cement. These findings provide admissible evidence that the EM-APAS-lime mixture, which outperforms cement in compressive strength and thermal conductivity, is most suitable for ground improvement binder for GCHP systems.

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A Study on the Red Clay Binder Stabilized with a Polymer Aqueous Solution

Cited by 8 publications

References 27 publications

Development of a Multiple-Piston Hydraulic Briquetting Press HBP and Characterization of Newsprint Briquettes Produced

Development of a Multiple-Piston Hydraulic Briquetting Press HBP and Characterization of Newsprint Briquettes Produced

Investigating Ultrasonic Pulse Velocity Method for Evaluating High-Temperature Properties of Non-Sintered Hwangto-Mixed Concrete as a Cement Replacement Material

Evaluation of Compressive Strength and Thermal Conductivity of Sand Stabilized with Epoxy Emulsion and Polymer Solution

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