TY  - JOUR
T1  - EXPERIMENTAL INSIGHTS INTO INDUCED PARTIAL SATURATION METHODS DEVELOPED FOR LIQUEFACTION MITIGATION: DISTRIBUTION OF GAS BUBBLES
TT  - ZEMİN SIVILAŞMASINA KARŞI GELİŞTİRİLEN KISMİ DOYGUNLUĞA İNDİRGEME METOTLARI ÜZERİNE DENEYSEL ÇALIŞMA: GAZ KABARCIKLARININ DAĞILIMI
AU  - Zeybek, Abdulhakim
PY  - 2022
DA  - December
Y2  - 2022
DO  - 10.31796/ogummf.1062953
JF  - Eskişehir Osmangazi Üniversitesi Mühendislik ve Mimarlık Fakültesi Dergisi
JO  - ESOGÜ Müh Mim Fak Derg
PB  - Eskişehir Osmangazi Üniversitesi
WT  - DergiPark
SN  - 2630-5712
SP  - 309
EP  - 317
VL  - 30
IS  - 3
LA  - en
AB  - Saturated deposits of sandy soils may liquefy during an earthquake event, causing detrimental effects on the site and structures. Mitigation of liquefaction-induced damage is of the essence when the structures are expected to exceed the acceptable limits of safety and serviceability. Induced Partial Saturation (IPS) has been recently proposed as a novel liquefaction countermeasure. In the present study, several laboratory tests were conducted on partially saturated sand models to offer insights into two IPS methods, paying more attention to the distribution of air/gas bubbles entrapped in pore spaces. For this purpose, loose deposits of partially saturated sand were prepared in transparent plexiglass boxes either injecting air or using a chemical substance. Digital images were recorded at different stages of the tests, which provided an opportunity to visualize the distribution of gas/air bubbles. Furthermore, moisture sensors were placed at different locations of sand models, allowing to capture the variation of the degree of saturation with time. Comprehensive analyses of the test data suggested that oxygen bubbles were generated through a reaction between water and chemical substance, and the distribution of oxygen bubbles was sufficiently uniform across the sand models. This method also allowed the preparation of sand models at the desired degrees of saturation. On the contrary, at 1-g injected air was observed to flow through a path of less resistance, and this technique was comparatively less successful in preparing sand models with uniformly distributed air bubbles and at lower degrees of saturation (i.e., below 90%).
KW  - Liquefaction
KW  - Partial Saturation
KW  - Air Injection
KW  - Chemical Substances
KW  - Hydrogen Peroxide
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UR  - https://doi.org/10.31796/ogummf.1062953
L1  - https://dergipark.org.tr/tr/download/article-file/2212653
ER  -