Precast Concrete Wall Panel from Sawdust and Wood Waste Ashes

Authors

  • Julia Mae A. Moralidad
  • Edward Joshua B. David

Keywords:

concrete wall pane, sawdust, wooden waste ashes

Abstract

INTRODUCTION

The study aimed to determine the acceptability of sawdust and wood ash as alternative fine aggregates in enhancing the compressive strength of precast concrete wall panel. The study was limited to only one mechanical property of precast concrete wall panel tested. It did not consider any other structural products and did not include the chemical properties and other compositions of the commodities used.

METHODS

Experimental research design was employed in the study. in here, concrete mix was produced applying a ratio of 1:2:4. That is, each part of cement has corresponding two parts of combined sawdust and wood ash and four parts of gravel. Three different combinations of sawdust and wood ash (40% & 60%; 50% & 50%; and 60% & 40%) as fine aggregates per weight of cement served as the experimental treatments in the study. Compressive strength test in accordance to ASTM C 39-04a, with the use of digital compression testing machine of Cavite Testing Center Corporation Materials Testing Laboratory, was done for each concrete cube produced containing each experimental treatment to determine which is the most acceptable.

RESULTS

Findings reveal that the concrete with 40 percent sawdust and 60 percent wood ash showed the highest compressive strength among the experimental treatments. Nevertheless, it was found out that it could not match the strength of the commercial concrete mix available in the market.

DISCUSSIONS

The three different combinations of sawdust and wood ashes concrete mixture gave an average compressive strength below 5.0 MPa, which does not exceed the commercialized concrete mixture's compressive strength of about 10 MPa. This showed that the ordinary concrete mix has a much greater compressive strength than sawdust and wood ashes concrete mixture. Moreover, Trial 1 of 40 % sawdust & 60% wood ashes concrete mixture gave the highest compressive strength among the concrete mix.

Published

2019-01-18