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Bài báo - Tạp chí
39 (2016) Trang: 850-858
Tạp chí: Journal of the Chinese Institute of Engineers

The present study investigates the possibility of using a blended class-F fly ash (FA) and residual rice husk ash (RHA) in the production of green building bricks through the application of densified mixture design algorithm (DMDA) in order to provide a new use for solid waste materials. This study uses unground rice husk ash (URHA) as a partial fine aggregate substitution (10%–40%) in the studied cementitious mixtures. Solid bricks of 220×105×60 mm in size were prepared, under forming pressure of 25–35 MPa, a curing temperature of 350C, and a relative humidity of 50%, for tests that assessed: compressive strength, flexural strength, bulk density, void volume, and water absorption. The test results showed that all brick samples performed excellent properties. Compressive strength and flexural strength ranged, respectively, between 20.2–33 MPa and 5.4–6.9 MPa. Additionally, up to 30% of URHA content, the values of water absorption and void volume ranged, respectively, between 8.8%–15.7% and 1.5%–2.1%. All of these values not only well conformed to the requirements relative to the Vietnamese codes but also demonstrated a great potential of using a blended FA–RHA in producing green building bricks.

Các bài báo khác
7(3) (2018) Trang: 233–237
Tạp chí: International Journal of Structural and Civil Engineering Research
2 (2015) Trang: 1-4
Tạp chí: International Journal of Advances in Mechanical and Civil Engineering
754-755 (2015) Trang: 468-472
Tạp chí: Applied Mechanics and Materials
2015 (2015) Trang: 623-626
Tạp chí: Green Building, Materials and Civil Engineering

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