Investigation on the mechanical properties of concrete utilizing cattle manure ash as partial replacement for cement

• Main Authors: Gamboa, Mike Christian D., Liberato, Carlo Amante C., II, Sugui, Genesis Israel N, Tan, John Henry M.
• Format: text
• Language: English
• Published: Animo Repository 2017
• Subjects: Cement; Concrete products; Building materials; Civil Engineering; Construction Engineering and Management
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/5790
• Institution: De La Salle University

The high demand for concrete in the construction industry continues to leave problems of carbon footprint, sustainable concrete in the future and other environmental concerns. Thus, greener alternatives are needed in order to address these problems. This study is about the use of cow manure ash as a partial substitute for cement in a concrete mix. It is mainly an investigation on the mechanical properties of concrete incorporated with cow manure ash, at 0, 10%, 20% and 30%, specifically the compressive strength, split-tensile strength, and flexural strength. Data obtained from the tests were examined and analyzed to determine if the concrete can be used for major construction purposes. Concrete with 10% replacement of manure ash was found to still show relatively high strength in all tests conducted with a 28th day average value of 30.19 MPa which is higher compared to the control specimen, while the concrete with 20% replacement still possessed an acceptable 28th day compressive strength value of 21.27 MPa, and may only be recommended for residential structures. With this study, the researchers aim to pave way to greener and economical alternatives that can be utilized in the production of concrete and motivate other researchers to conduct further studies on the utilization of waste and recycled materials.