Cement and Silica Fume Treated Columns to Improve Peat Ground

Kalantari, Behzad; Prasad, Arun; Huat, Bujang B. K.

doi:10.1007/s13369-012-0369-0

Cited by 16 publications

(13 citation statements)

References 4 publications

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“…In consideration of the swampy environment of peatland, hydraulic binders are suitable for consuming water during the hydration process, thus enhancing peat strength. Similar results have been reported in previous studies on peat stabilization using cement and silica [7,30,31].…”

Section: Standard Compactionsupporting

confidence: 92%

“…Materials 2021, 14, x FOR PEER REVIEW 7 of 24 have been reported in previous studies on peat stabilization using cement and silica [7,30,31].…”

Section: Ucs Developmentmentioning

confidence: 99%

“…Materials 2021, 14, x FOR PEER REVIEW 14 of 24 calcium silicate hydrate (C-S-H) gel and calcium silicate (CS) [7,52], while the combined effect of SF and OPC may be associated with the formation of calcium silicate (CS) and hydrated components as a result of hydration, i.e., calcium aluminate hydrate (C-A-H), calcium silicate hydrate (C-S-H) gel, and AFt formation. [1].…”

Section: Cbr and Comparisonmentioning

confidence: 99%

“…However, its highly amorphous nature with enriched silicon dioxide makes it substantially pozzolanic [ 6 ]. The silicon dioxide reacts with the calcium hydroxide in the presence of water to produce calcium silicate hydrate gel, which is responsible for the strength improvement of problematic soil [ 7 ]. Therefore, SF has been extensively adopted in the stabilization of peat soil [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

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The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

et al. 2021

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Peat is a well-known problematic soil associated with poor engineering properties. Its replacement with an expensive competent foundation material is practiced for road embankment construction which is costly and causes greenhouse gas emissions. Therefore, this paper investigated the effectiveness of a byproduct from a metal industry (silica fume) to stabilize peat along with ordinary Portland cement (OPC) through a series of experimental tests. After peat-indexed characterization, a number of standard compaction and mechanical tests were performed on the stabilized and parent peat. For this purpose, nine designated mixes were prepared possessing various combinations of silica fume (SF) and 10–20% OPC. Unconfined compressive strength (UCS) and California Bearing Ratio (CBR) tests were carried out after 7, 14, and 28 days of curing to assess strength enhancement and binder effectiveness, and the microstructural evolution induced by the binders was examined with scanning electron microscopy (SEM). The analysis revealed a substantial improvement in mechanical properties with the incorporation of SF and OPC, ultimately meeting the minimum strength requirement for highway construction (i.e., 345 kPa). A peak UCS of 1063.94 kPa was recorded at 20% SF, and an unsoaked CBR value of 42.95 was observed using 15% SF and 15% OPC after 28 days of curing. Furthermore, the increasing percentage of hydraulic binders exhibited brittle, collapsible failure, while the microstructural study revealed the formation of a dense matrix with a refined pore structure in the treated peat. Finally, a significant statistical analysis was carried out by correlating the test parameters. In this way, rather than stockpiling and dumping, an industrial byproduct was implemented in peat stabilization in an eco-friendly manner.

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Section: Standard Compactionsupporting

confidence: 92%

“…Materials 2021, 14, x FOR PEER REVIEW 7 of 24 have been reported in previous studies on peat stabilization using cement and silica [7,30,31].…”

Section: Ucs Developmentmentioning

confidence: 99%

Section: Cbr and Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

et al. 2021

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“…Meng et al [19] studied influences of compound nano calcium carbonate on strength and microstructure of soil-cement in marine environment and indicated that marine environment had large influences on strength and durability of soilcement. Kalantari et al [20] indicated that silicon powder had improved the strength and bearing capacity of soilcement. Kolias et al [21] and Karpisz and Jaworski [22] studied the influences of fly ash on the strength and stability of soil-cement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ferronickel Slag Powder on Strength of Soil in Marine Environment

Chen

Tong

2020

Advances in Civil Engineering

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Over the past few years, soil-cement has been widely used in marine geotechnical engineering; meanwhile, the safety of soil-cement in marine environment has attracted wide attention. In order to study the influence of composite ferronickel slag powder on the strength and micro morphology of soil-cement in marine environment, the composite nickel iron slag powder was added into the soil-cement in this paper. The unconfined compressive strength test, erosion resistance coefficient analysis, SEM, and EDS test analysis of soil-cement were carried out.. Results showed that the marine environment had great influences on the strength of soil-cement, and the addition of compound nickel-iron slag powder can enhance the strength of soil-cement, and the deterioration of the strength of soil-cement is reduced. In addition, the compound ferronickel slag powder has microaggregate effect, morphological effect, and activation effect, which not only improves compaction rate of soil-cement and prevents invasion of erosive ions in marine environment but also has positive effects on the performance of soil-cement.

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