Abstract: The production of cement and extraction of sand has led to long‒term damages to the environment. To alleviate these damages, ways on minimizing usage of cement and sand should be done. For this reason, the purpose of this research is to investigate the effect of reducing the cement and sand content of plaster mortar and partially replaced the two with rice hull ash and sawdust. To assess and evaluate the quality of plaster mortar utilizing sawdust and rice hull ash, a series of test was conducted such as: flow table test, length change test, compressive strength test and a visual inspection of the applied plaster. The method chosen for this study is the experimental method and four (4) mix design ratios were proposed with a 1:4 cement-sand ratio. The results show that the best mix identified within the limitations on this study, is the plaster mortar having a ten percent partial replacement of cement with rice hull ash (by weight) only. This mix design has achieved good workability, has a lower shrinkage percentage and higher compressive strength of 7.13 MPa, in comparison with the control sample. It has a smooth plaster finish and similar color with the ordinary, cement-based plaster. The use of rice hull ash as partial replacement to cement is recommended; not only it minimizes the usage of cement, but also it improves the overall quality of plaster mortar.
Keywords: Common byproducts, Plaster Mortar, Property Characterization, Rice Hull Ash, and Sawdust.
Title: Property Characterization of Plaster Mortar Utilizing Sawdust and Rice Hull Ash
Author: Vanessa Mae M. Angue, Charmaine Ericka M. Dela Cruz, Faye Angel Maeh P. Kahano, Jenifer A. Magsino, Engr. Siva Das P. Abaya
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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