00000ctm a22000004i 4500 UP-99796217612935555 Buklod 20230215105418.0 m |o d | ta 190107s xx d r |||| u| (iLib)UPD-00397766036 DENGII rda eng DMLUC LG 993.5 2017 E63 K67 Ko, Samantha R. author. Assessment of induced partial saturation for mitigating earthquake-induced liquefaction Samantha R. Ko, David Anthony N. Maglasang ; Jaime Angelo S. Victor, faculty adviser ; Giancarlo P. Ventura, co-adviser. Quezon City College of Engineering, University of the Philippines Diliman 2017. xiv, 77 leaves color illustrations 28 cm. text rdacontent unmediated rdamedia volume rdacarrier Thesis (Bachelor of Science in Civil Engineering)--University of the Philippines Diliman June 2017. Liquefaction is the state of soil from which it loses its undrained shear strength and thereby behaves almost like a liquid. It is a common phenomenon associated with earthquakes and, thus, can cause deleterious consequences to both man and the environment. Induced partial saturation, a potentially cost-effective method in mitigating liquefaction, desaturates the soil through generation of gas in the voids. An assessment of this chemical mitigation technique, using Efferdent TM, was presented in this thesis. A makeshift shaking box was used to simulate liquefaction and verify the effectiveness of the said technique. Seismic performance tests were operated on both treated and untreated sand samples to compare its effects on the pore water pressure and settlement in the event of liquefaction. Based on One-Way ANOVA and Tukey's Pairwise Comparison Test, it was found that when the concentration used is R=4, the reduction in settlement is significant. A probable proof of densification was also observed as the sand surface of R = 4 heaved upon application of the chemical compound. Also, all concentrations that were tested, i.e. R = 4, 6 and 8, were equally effective in reducing the pore water pressure buildup. The experiment done was a proof of concept and may be replicated for actual field applications. Soil liquefaction. Maglasang, David Anthony N. author. Victor, Jaime Angelo S. faculty adviser. Ventura, Giancarlo P. co-adviser. Thesis FI UP UPD DENG-II LG 993.5 2017 E63 K67 Thesis