Effect of sulfate and chloride solutions on the compressive and flexural strengths of mortar incorporating spent coffee grounds
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Từ khóa:
Mortar
Spent coffee grounds
Sulfate
Chloride
Compressive strength
Tóm tắt
Vietnam is a major coffee consumer, generating large amounts of spent coffee grounds (SCG), typically discarded as waste. This creates environmental concerns but also offers potential for resource reuse. Meanwhile, Vietnam’s construction industry faces a shortage of natural river sand. The study explores the potential of using SCG as a partial replacement for natural sand in mortar production, aiming to support sustainable development. The effect of varying SCG contents on the compressive and flexural strengths of mortar under different aggressive environments was examined, including immersion in water, 5% NaCl solution, 5% Na2SO4 solution, and a mixed 5% NaCl-Na2SO4 solution. Results revealed that both compressive and flexural strengths increased over time; however, higher SCG content resulted in a gradual decrease in both. Furthermore, immersion in different solutions influenced the mortar’s strength, with tap water proving the most beneficial for compressive strength, while 5% Na2SO4 solution showed the greatest effect on flexural strength.
Tài liệu tham khảo
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Cách trích dẫn
Nguyen, V.-D., và D.-N. Nguyen. “Effect of Sulfate and Chloride Solutions on the Compressive and Flexural Strengths of Mortar Incorporating Spent Coffee Grounds”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 23, số p.h 6A, Tháng Sáu 2025, tr 48-54, doi:10.31130/ud-jst.2025.23(6A).270E.
