Physical and Mechanical Properties of Cement Mortar Brick with Loess and Fly Ash

This study was performed to evaluate the engineering properties of cement mortar brick with loess and fly ash. The unit weight was in the range of $2,068{\sim}2,137\;kgf/m^{3}$ and $1,899{\sim}2,045\;kgf/m^{3}$ in water and dry curing, respectively It was decreased with increasing the loess content. The absorption ratio was in the range of $5.2{\sim}13.1%$ and $8.5{\sim}13.2%$ in water and dry curing, respectively. The compressive strength was decreased with increasing the loess content. The compressive strength of the 193 $kgf/m^{2}$ in water and 188 $kgf/m^{2}$ in dry curing at the curing age 28 days of the binder volume ratio 35% was exceeded in 163 $kgf/m^{2}$ of standard compressive strength about cement bricks. The carbonation depth was in the range of $0.9{\sim}1.4$ mm, $1.2{\sim}3.6$ mm, $1.4{\sim}6.7$ mm and $2.4{\sim}12.5$ mm in dry curing of curing age 14days, 28days, 90days and 360days, respectively.

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