Investigating the Mechanical and Durability Characteristics of Fly Ash Foam Concrete.

(2) In studying the effects of different silica fume dosages on the compressive strength, thermal conductivity, and pore structure parameters of FAFC at 5% of hydrogen peroxide, the dry density of FAFC showed a decreasing trend with the increase in silica fume dosage, and the remaining indexes all peaked.

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It can be observed from Figure 16 that with the increase in the silica fume admixture, the FAFC porosity showed a trend of first decreasing and then increasing, and the FAFC porosity kept falling when the silica fume admixture rose from 0 to 4%.

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With the extension of the maintenance age, the compressive strength of FAFC samples with different amounts of silica fume admixture all showed an increasing trend.

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