Effect of Sodium Silicate-based liquid stabilizer on Unconfined Compressive Strength of Marine Clay Faizal Pakir a,b , Aminaton Marto b* , Nor Zurairahetty Mohd Yunus b , Nima Latifi b and Choy Soon Tan b a Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia b Faculty of Civil Engineering, Universiti Teknologi Malaysia (UTM), Malaysia *Corresponding Author: aminaton@utm.my ABSTRACT Marine clay is one problematic in the development project due to the high compressibility, swelling and low strength. Chemical soil stabilization usually used to improve the strength and capability of soils. A new liquid stabilizing agent, one of commercial brand namely “TX-85” was developed to increase the strength and reliability soils for construction of building and road. In this study a laboratory test was conducted to evaluate the effects of TX-85 on the Unconfined Compression Strength (UCS) and plasticity index of marine clay. Soil samples were mixed with various amounts of TX-85 (3, 6, 9, 12 and 15%) and compacted at the 90% optimum moisture content (wet side) and 90% maximum dry density. The treated and untreated samples were subjected to unconfined compression tests to determine their strength at different curing times. The results show that addition of the TX-85 can reduce the plasticity and slightly increased the UCS of the soils, also the UCS increased with the duration of curing time. It can be concluded that, the stabilization using TX-85 can be used as an alternative and economic method in the civil projects. Keyword: Marine Clay, UCS, Stabilization, Sodium Silicate 1. Introduction Marine clays of low strength and high compressibility are located in many coastal and offshore areas of the world. There are significant challenges to be faced by engineers in the construction project when dealing with marine clay. The marine clay is low strength, high compressibility and greatly influenced by the moisture content. The marine clay will shrink when dry and swell when moisture content increased. The high of movement can cause problematic foundation structure built on it [1]. Conventional method involved a methodology which the presence of marine clay replaces with other superb soil imposed high cost on the construction project. Alternatively, chemical stabilization was chose to solve this problem. Chemical stabilization is often used by adding of soil stabilizers or other particle