INCORPORATION OF SAWDUST IN CONCRETE TYPE H-21 AND ITS EFFECT ON SIMPLE COMPRESSION RESISTANCE

https://doi.org/10.23670/rc.2024.01.02

Abstract

The objective of this work is to determine the effect of the incorporation of sawdust on the mechanical properties of concrete, for this, a layer of 5 % calcium hydroxide is applied to the sawdust samples and the granulometry, the content of humidity, as well as the absorption percentage, all under the ASTM C-29,566,127,128,191,187,136, 117 y 131standard. The sawdust proportions in the concrete samples were determined according to the weight of the fine aggregate and its absorption percentage in 10 %, 20 % and 50 %, evaluating in each case the 210 kg / cm2. The evaluation of experimental resistance for the concrete samples will be taking 30 tests as a sample corresponding to mechanical resistance experimentally through destructive and no destructive tests with ASTM C-805 The concrete samples are of type H-21 or of characteristic resistance of a single mixture and the validity of the experimental results will be carried out by means of difference of means. The results obtained show that the concretes with addition of sawdust in 10 % and 20 % comply with the minimum resistance required, even increasing their resistance in 0.06 % with reference to the standard concrete, on the other hand, the concretes with addition of sawdust at 50 % it reduces its resistance by 12 % with reference to standard concrete, establishing a limit of incorporation of sawdust of 20 % in conventional mixtures.