Consolidation and Hydraulic Conductivity of Oil Sand Mature Fine Tailings Dewatered by Using Super Absorbent Polymer

被引：4
|
作者：
Farkish, A. [1 ]
Fall, M. [2 ]
机构：
[1] Univ Ottawa, Dept Civil Engn, Ottawa, ON K1N 6N5, Canada
[2] Univ Ottawa, Dept Civil Engn, Ottawa Carleton Inst Environm Engn, Ottawa, ON K1N 6N5, Canada
来源：
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING | 2014年 / 140卷 / 07期
关键词：
Oil sand; Mature fine tailings (MFTs); Tailings; Freeze-thaw; Consolidation; Super absorbent polymer; Hydraulic conductivity; NON-LINEAR CONSOLIDATION; SATURATED CLAYS; TEMPERATURE; MODEL; CS2;
D O I：
10.1061/(ASCE)GT.1943-5606.0001101
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
A comprehensive experimental program that consists of consolidation and hydraulic conductivity tests has been conducted on mature fine tailings (MFTs) dewatered with super absorbent polymer (SAP) as well as MFTs dewatered with SAP and subjected to freeze-thaw cycles. The consolidation behavior and hydraulic conductivity of MFTs dewatered by using recycled SAP are also investigated. The obtained results indicate that dewatering by using SAP or a combination of dewatering by using SAP and a freeze/thaw process can significantly increase the solid content and decrease the initial void ratio and compressibility of the MFTs. Moreover, the freeze-thaw process can significantly increase the hydraulic conductivity of the MFTs, which, in combination with reduced compressibility, will improve the MFT consolidation. (C) 2014 American Society of Civil Engineers.
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页数：6
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