Unconfined compressive strength of clay stabilized with cement-rubber chips

Robani, Rafidah and Chee, Ming Chan (2008) Unconfined compressive strength of clay stabilized with cement-rubber chips. In: Seminar on Unconfined compressive strength of clay stabilized with cement-rubber chips, 2008, UTHM.

[img]PDF
528Kb

Abstract

Stabilization of soft soils, such as clays, using cement tends to result in a soilcement matrix which is stiff and lack in elasticity. By adding small quantities of rubber chips in the soil-cement mix, the natural elasticity of rubber could help lower the stiffness of the stabilized material and introduce more flexibility in the final stabilized columnar system. Rubber, having low density, high elasticity, low stiffness and high shear strength at large strains, could indeed complement and enhance the limitations of cement stabilization. Clays tend to have lower shear strengths and are known to lose strength further upon wetting. By stabilizing these soft materials with cement-rubber chips, the binding effect of hydrated cement, combined with the 'softening' effect of the rubber chips, would produce a strong yet elastic stabilized soil. This study aimed at examining the potential benefit of admixing rubber chips in cement stabilization of soft clay. The base clay used was retrieved f r o m the Research Centre for Soft Soils ( R E C E S S ) test site, admixed with 5 % cement and various percentages of rubber chips. The specimens were then cured for 7 and 14 days before being subjected to the unconfined compression test. The laboratory test results showed that the cement-rubber chips admixture could effectively improve the strength of originally soft and w e a k clays. The elastic properties of the stabilized material were also found to be enhanced.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Soil stabilization; rubber chips; elasticity; unconfined compressive strength
Subjects:T Technology > T Technology (General)
ID Code:1951
Deposited By:M.Iqbal Zainal A
Deposited On:05 Oct 2011 15:37
Last Modified:05 Oct 2011 15:37

Repository Staff Only: item control page