Soil Technology and Engineering Properties of Soils

Winterkorn, Hans F.; Fang, Hsai-Yang

doi:10.1007/978-1-4615-3928-5_3

Cited by 21 publications

(9 citation statements)

References 57 publications

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“…Similarly, from , we obtain the estimate K ≈ 4.07 × 10 −15 m 2 . The estimates for permeability of sandstone available in the literature vary a great deal and range from 1.0 × 10 −15 to 1.5 × 10 −10 m 2 (e.g., Farmer 1968; Serafim 1968; Winterkorn and Fang 1975; Jaeger and Cook 1976; Lama and Vutukuri 1978; Costa and Baker 1981). Recently, Lock et al (2003) investigated the use of the image analysis of the pore structure for the estimation of the permeability of sandstone.…”

Section: Computational Modelingmentioning

confidence: 99%

On Cavity Flow Permeability Testing of a Sandstone

Selvadurai

2007

Groundwater

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This paper describes a laboratory experiment designed to measure the bulk permeability of a cuboidal sample of sandstone measuring approximately 450 mm(2) in plan area and 508 mm in height. The relatively large dimensions of the sandstone specimen allow the determination of the permeability of the material by creating a central cavity that can be pressurized to maintain a constant flow rate. The paper describes the experimental details and the test procedure, and discusses the computational and analytic approaches that have been used to interpret the test results.

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Section: Computational Modelingmentioning

confidence: 99%

On Cavity Flow Permeability Testing of a Sandstone

Selvadurai

2007

Groundwater

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“…For example, use of correlations based on natural soils that relate liquid limit (Terzaghi and Peck 1967) or plasticity index (Wroth and Wood . In terms of the swelling index, observed values were generally less than the compression index by a factor of 10, which is typical for a variety of soils (Winterkorn and Fang 1975). The influence of biofilm on swelling is modest but consistent for both soils tested.…”

Section: Consolidationmentioning

confidence: 68%

Consolidation and Strength Characteristics of Biofilm Amended Barrier Soils

Daniels¹,

Cherukuri²,

Ogunro³

Appropriate Technologies for Environmental Protection in the Developing World

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Experimental work was conducted to investigate the influence of biofilm on the consolidation and strength characteristics of two barrier soils. Biofilm has potential as a low-cost additive for soil stabilization, and it may be formed naturally in landfills throughout the developing world. The EPS-producing bacterium Beijerinckia indica was used to prepare solutions of varying concentration of exopolymeric substances (EPS). These solutions were then used as the molding moisture for compacted specimens of locally available clay ("red bull tallow," RBT) as well as a mix of 65% sand and 35% bentonite (65:35 mix). As compared to tap water, the influence of the nutrient solution or biofilm on RBT is to increase the compression index (C c ), although this trend is variable for increasing EPS concentration. While the effect of biofilm on the 65:35 mix is less uniform, the largest increase in C c was observed for the highest level of biofilm amendment (EPS-5, 300 mg/L). Amendment with biofilm results in both increases and decreases in the rate of consolidation (c v ). The c v values ranged from 0.4 to 13.6 m 2 /year and from 0.2 to 19.3 m 2 /year for RBT and 65:35 mix, respectively. In general, EPS has a decreasing effect on observed strength. For example, the peak unconfined compressive strengths for unmodified RBT and 65:35 mix were found to be 667.0 and 395.3 kPa, respectively. Many of these values decreased with increasing biofilm amendment, and for the highest level of amendment, the observed peak strengths were 159.1 and 98.8 kPa. To the extent that naturally-occurring methanotrophic activity in landfill cover systems results in biofilm production, the results suggest potential concerns with cover stability.

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“…Pycnometer test was conducted in order to be used in hydrometer analysis in accordance with ASTM D 854 and the specific bulk density of the soils tested were found to be in the range of 2.4 -2.8 g/cm 3 . The results are shown in Table 3 below.…”

Section: Pycnometer Test Results (Unit Weight Of Solids)mentioning

confidence: 99%

“…Liquid phase, on the other hand, is usually an aqueous electrolyte solution. Depending on the biological activity in the soil and its location along with the effects of its contact with the atmosphere, the gas phase may have a different secondary composition [3]. Soil, as a result of several different materials it contains, emerges as a carrier material beneath the foundation of structures and as a material used to produce soil structures (earth dam, land reclamation, banks, etc.).…”

Section: Introductionmentioning

confidence: 99%

Determination of the Plasticity Index of Soils with Fine-Grained Soils Using Methylene Blue Test

Otçu¹,

Uzundurukan²,

Kaplan³

2017

GEP

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The amount of fine material available in the soil is significant in Atterberg limits and methylene blue tests. In the context of Atterberg limits, increased amount of clay minerals contained in the soil increases liquid and plastic limit values; however, increasing sand content reduces the moisture content reducing the water retention capacity of the soil which in return reduces the plasticity index (PI) value. In the case of methylene blue test, which is used to specify the quality of the amount of fine material, existence of clay in the medium increases the pollution level of the sand and the amount of methylene solution (V 1 ) used. In this study, soil classes were determined and pollution rates were identified with Atterberg limits, pycnometer, sieve analysis, hydrometer analysis and methylene blue tests conducted on 11 different natural soil samples collected from different regions. From the data obtained, first the relationship between PI and methylene blue (MB) was examined and was evaluated according to the results of the "single regression" method. Furthermore, the other coefficient of uniformity (C u ), coefficient of graduation (C c ), unit weight of soils (γ s ) parameters obtained from experimental studies were also subjected to "multiple regression analysis" in order to reveal their impact on the MB and this impact was confirmed taking both statistical analyses into account.

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Soil Technology and Engineering Properties of Soils

Cited by 21 publications

References 57 publications

On Cavity Flow Permeability Testing of a Sandstone

On Cavity Flow Permeability Testing of a Sandstone

Consolidation and Strength Characteristics of Biofilm Amended Barrier Soils

Determination of the Plasticity Index of Soils with Fine-Grained Soils Using Methylene Blue Test

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