ROLE OF SOIL WATER IN CEMENT-BASED TREATMENT OF DREDGED MATERIALS
Cement-based solidification/stabilization is one of the popular technologies to remediate dredged materials (DM). This paper presents a laboratory study which investigates the relationship between the development of hydrates within the cement-treated soil matrix and its mechanical properties. The effects of cement content, curing period, clay content and humic acid content on the soil water composition and mechanical behavior of the cement-treated DM are evaluated. A soil water transfer model is proposed for the cement-based treatment from which two new water content parameters: change in hydration water content (Δmhw) and change in bound water content (Ambw) are identified. Δmhw and Δmbw can be related to the amount of resultant hydrates and the development of the amorphous hydrates in the cement-treated soil matrix, respectively. It is found that Δmhw and Δmbw may be used to correlate some mechanical properties (such as unconfined compressive strength, yield stress and effective cohesion) of the cement-treated DM.
dredged materials cementation bound water hydration water
Wei ZHU C.F.CHIU
College of Environmental Science and Engineering, Hohai University, China Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai Universit
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
395-404
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）