Thesis Bachelor of Science in Civil Engineering University of Rizal System-Morong 2023

The main objective of this study was to investigate whether foundry waste and pulverized glass can replace fine aggregate in concrete without compromising its strength, workability, and durability. To achieve this goal, samples were prepared using a M20 grade concrete mix with varying ratios of the aforementioned materials. The study was conducted in Morong, Rizal over a period of 11 months, from July 2022 to May 2023. The results of the tests conducted on the samples were analyzed to determine the feasibility of using these waste materials as a substitute for fine aggregate in concrete. The study involved the preparation of 60 concrete samples with varying ratios of foundry waste, pulverized glass, and fine aggregate to test their strength and durability. The researchers measured the strength, workability, and durability of the concrete using compressive strength, water absorption, and slump tests. The resulting data were analyzed to assess the suitability of the waste materials as a replacement for fine aggregate in concrete. When concrete samples have compressive strength that goes beyond what is required, their quality is considered to be better. The researchers employed an experimental investigation to explore their research questions. This research approach allowed them to gather valuable data and draw meaningful conclusions from the experiment's findings. To illustrate the information gathered during the experimentation, the researchers analyzed numerous pictures and test results obtained from testing facilities. The study evaluated the impacts of substituting sand with FWPG in concrete mixtures. The results showed that mixture F had the highest average slump value of 63.33 mm, while mixture B had the lowest at 31.33 mm. Mixture Eexhibited the highest compressive strength with an average of 27.64 MPa, whereas mixture C had the lowest at 22.52 MPa. Furthermore, mixture C had the highest water absorption rate, while mixture D had the lowest. The results of analysis showed a P-value of workability was 3.77E-06, the P-value of compressive strength was 0.000430685, and the P-value of water absorption was 0.83753. The experiment showed that pulverized glass met the ASTM standard specifications for water absorption when compared to conventional sand. All the concrete mixtures achieved the target slump, and the compressive strength of FWPG met the M20 grade's minimum requirement. However, the water absorption rates for mixtures C, E, and F were higher than 0%, with average rates of 8.61%, 9.152%, and 8.46%, respectively.9.152%, and 8.46%, respectively. While, based on ANOVA the workability and compressive strength, there was a significant difference, and for water absorption, shows that there was no significance difference between conventional sand and FWPG concrete. Based on the conclusion, the researcher recommends to perform other physical property test, specifically different types of sieve analysis. In terms of workability of FWPG concrete it is recommended to use another test specifically compacting factor test, flow test, vee-bee consistometer test and Kelly Ball test. It is also recommended to evaluate the other mechanical properties of concrete, such as flexural strength and tensile strength, to determine the effect of FWPG on these properties. Other tests, such as permeability, carbonation, and the concrete prism test, may be used to assess the durability of concrete. Use additional statistical analysis, such as the Post-hoc test, to determine where the significant difference between conventional and FWPG concrete lies. Future researchers may investigate the properties of non-ferrous metals to identify if it can be used as a partial replacement for sand in concrete.