Abstract
The purpose of this work was to produce a mix design rarely reported in the literature on wood-cement composites, i.e., 1:1:0.5 (cement:wood:water). This design was achieved by using CP IV-32 RS cement and adding 4% of ferric chloride additive plus fibers of the species Simarouba amara (paparaúba) retained on ASTM 7 and ASTM 10 sieves. Before mixing the fibers into the cement paste, they were presoaked for 15 minutes to between 84% to 136% of their mass. In these conditions, all the heat of hydration tests presented low inhibition. Panels measuring 300 x 450 x 25 mm were prepared, and the values of compressive and flexural strength of the composite after 28 days showed no significant differences with respect to soak, but the effect of particle size was significant. These results indicate that more fiber can be added in the mix design of this cement-wood composite without changing its mechanical strength, controlling only the presoak conditions.
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