Relationship between methylene blue value, initial soil suction and swell percent of expansive soils

Date

2002-11-19

Author

Çokça, Erdal

Metadata

Show full item record

Item Usage Stats

150
views

0
downloads

The purpose of this study was to investigate the relationship between methylene blue value, initial soil suction and the swell percentage of expansive soil samples. In this study, commercially processed kaolinite and bentonite mineral clays were mixed in preselected proportions to obtain soil samples possessing a wide range of plasticities and different swell percentages. The methylene blue adsorption tests, suction measurements using a thermocouple psychrometer technique and standard free swell tests in oedometer cells (ASTM D4546-90) were conducted on samples of kaolinite-bentonite mixtures. The results indicated a linear relationship between methylene blue value and swell percent and also between initial soil suction (Log) and swell percent. The experimental relationship which directly relates the methylene blue value and initial soil suction to the swell percent is established, the reliability of the swell percent prediction method based on methylene blue value and initial soil suction (Log10) data is evaluated, and the coefficient of correlation (R2) of this relationship is 0.992.

Subject Keywords

Expansive soil, Methylene blue value, Psychrometer, Soil suction, Swell percent

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036405071&origin=inward
https://hdl.handle.net/11511/86492

Journal

Turkish Journal of Engineering and Environmental Sciences

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Relationship between suction and shear strength parameters of compacted METU campus clay Tilgen, Hüseyin Pars; Çokça, Erdal; Department of Civil Engineering (2003) In this study, the relationship between soil suction and shear strength parameters of compacted METU campus clay were investigated at different moisture contents. Soil samples were tested at optimum moisture content (i.e. w=20.8%), at dry side of optimum moisture content (i.e. w=14.8%, 16.8%, 18.8%) and at wet side of optimum moisture content (i.e. w=22.8%, 24.8%, 26.8%). Direct shear tests were performed to measure shear strength parameters (c', F') and soil suctions were measured by filter paper method af...
Estimation of grain characteristics of soils by using cone penetration test (CPT) data Ozan, Cem; Çetin, Kemal Önder; Department of Civil Engineering (2003) Due to lack of soil sampling during a conventional cone penetration testing (CPT), it is necessary to classify soils based on recorded tip and sleeve friction and pore pressure (if available) values. However, currently available soil classification models are based on deterministic and judgemental determination of soil classification boundaries which do not address the uncertainties intristic to the problem. Moreover, size and quality of databases used in the development of these soil classification models ...
Interaction of pressure, time and temperature of pressurization on viability loss of Listeria innocua Alpas, Hami; Bozoglu, F; Ray, B (1998-03-01) In this study, the combined effectiveness of pressures of 137.9-344.7 MPa, temperatures of 25-50 degrees C and exposure times of 5-15 min on Listeria viability in peptone solution is examined. The results showed that under the innocua study conditions only the combination of 344.7 MPa, 50 degrees C and 9.1 min can reduce the viability of this species by 7 logs, with a z value of 173.1 MPa.
Swell pressure prediction by suction methods Erzin, Yusuf; Erol, Orhan (2007-07-10) Soil suction is the most relevant soil parameter for characterization of the swell behavior. An attempt was made to predict swell pressures from soil suction measurements. In this study, Na-bentonite was mixed with kaolinite in the ratios of 5, 10, 15, 20 and 25% of dry kaolinite weight to obtain soils in a wide range of plasticity indices (i.e. 30, 50, 68, 84 and 97%). Suction measurements using thermocouple psychrometer technique were made on statically compacted specimens. The dependence of soil suction ...
Swell pressure prediction by suction methods Kandemir, A; Erol, O; Erzin, Y (1997-09-12) Soil suction is the most relevant soil parameter for characterization of the swell behaviour. An attempt has been made to predict the swell pressures from soil suction measurements. Bentonite-Kaolinite clay mixtures were prepared to obtain soils in a wide range of plasticity indices. Suction measurements using thermocouple physchrometer technique and constant volume swell tests in oedometers were made on statically compacted specimens. Soil suction is correlated to plasticty index, water content and dry den...

Citation Formats

E. Çokça, “Relationship between methylene blue value, initial soil suction and swell percent of expansive soils,” Turkish Journal of Engineering and Environmental Sciences, pp. 521–529, 2002, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036405071&origin=inward.