Abstract
Lightweight foamed concrete with foam agent addition varied from 0 to 7wt% was fabricated and the influence of foam stabilizer and polypropylene fiber (PPF) addition on mechanical performance of lightweight foamed concrete was researched. The experimental data revealed that the density, thermal conductivity, flexural and compressive strength exhibited a rapidly downward trend with the increase of foam agent content due to generation of a large number of pores by decomposition of foam agent. The samples with foam stabilizer addition possessed better mechanical properties and lower thermal conductivity compared to the samples without foam stabilizer addition due to the improvement of pore structure. Besides, an appropriate amount of PPF could enhance flexural and compressive strength of specimens, while excess PPF was proven to be counterproductive.
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