Back-Pressure System

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Khairul Anuar Kassim - One of the best experts on this subject based on the ideXlab platform.

  • Criteria of Acceptance for Constant Rate of Strain Consolidation Test for Tropical Cohesive Soil
    Geotechnical and Geological Engineering, 2016
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Ahmad Beng Hong Kueh, Lam Chee Siang
    Abstract:

    In this study, the rapid consolidation equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer, consuming merely a few hours for the whole precedure to determine the consolidation characteristics of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing, requiring a good estimation of the loading rate such that it is ideal for the achievement of steady state condition during testing. The steady state condition is achieved when the c _ v values from drained and undrained face of CRS converged with the c_v from Oedometer test. A slightly modification has been made on the normal constant rate of strain (CRS) test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. This research has produced a set of criteria for determining the suitable rate for the rapid consolidation test based on the ratio of normalized strain rate, β , and proposed a new coefficient in terms of a ratio of β to clay fraction (CF), as a part of new criteria for testing a fine soil. Four types of sample were tested with different rates of strain using the RACE and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found from the study that the minimum value of normalized strain rate, β , for the CRS test is 0.005 and for the u _ a / σ_ v ratio is suggested as 0.01. Also, the maximum β /CF for soils with clay friction lower and higher than 50 % are 0.008 and 0.001, respectively. The minimum β /CF value for both conditions is 0.0001.

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2015
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI 

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2014
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI < 15 % was between 0.01 and 0.3, while for LI closed to 25 %, the range was between 0.01 and 0.1.

Lam Chee Siang - One of the best experts on this subject based on the ideXlab platform.

  • Criteria of Acceptance for Constant Rate of Strain Consolidation Test for Tropical Cohesive Soil
    Geotechnical and Geological Engineering, 2016
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Ahmad Beng Hong Kueh, Lam Chee Siang
    Abstract:

    In this study, the rapid consolidation equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer, consuming merely a few hours for the whole precedure to determine the consolidation characteristics of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing, requiring a good estimation of the loading rate such that it is ideal for the achievement of steady state condition during testing. The steady state condition is achieved when the c _ v values from drained and undrained face of CRS converged with the c_v from Oedometer test. A slightly modification has been made on the normal constant rate of strain (CRS) test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. This research has produced a set of criteria for determining the suitable rate for the rapid consolidation test based on the ratio of normalized strain rate, β , and proposed a new coefficient in terms of a ratio of β to clay fraction (CF), as a part of new criteria for testing a fine soil. Four types of sample were tested with different rates of strain using the RACE and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found from the study that the minimum value of normalized strain rate, β , for the CRS test is 0.005 and for the u _ a / σ_ v ratio is suggested as 0.01. Also, the maximum β /CF for soils with clay friction lower and higher than 50 % are 0.008 and 0.001, respectively. The minimum β /CF value for both conditions is 0.0001.

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2015
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI 

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2014
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI < 15 % was between 0.01 and 0.3, while for LI closed to 25 %, the range was between 0.01 and 0.1.

Hossein Moayedi - One of the best experts on this subject based on the ideXlab platform.

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2015
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI 

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2014
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI < 15 % was between 0.01 and 0.3, while for LI closed to 25 %, the range was between 0.01 and 0.1.

Ahmad Safuan A. Rashid - One of the best experts on this subject based on the ideXlab platform.

  • Criteria of Acceptance for Constant Rate of Strain Consolidation Test for Tropical Cohesive Soil
    Geotechnical and Geological Engineering, 2016
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Ahmad Beng Hong Kueh, Lam Chee Siang
    Abstract:

    In this study, the rapid consolidation equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer, consuming merely a few hours for the whole precedure to determine the consolidation characteristics of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing, requiring a good estimation of the loading rate such that it is ideal for the achievement of steady state condition during testing. The steady state condition is achieved when the c _ v values from drained and undrained face of CRS converged with the c_v from Oedometer test. A slightly modification has been made on the normal constant rate of strain (CRS) test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. This research has produced a set of criteria for determining the suitable rate for the rapid consolidation test based on the ratio of normalized strain rate, β , and proposed a new coefficient in terms of a ratio of β to clay fraction (CF), as a part of new criteria for testing a fine soil. Four types of sample were tested with different rates of strain using the RACE and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found from the study that the minimum value of normalized strain rate, β , for the CRS test is 0.005 and for the u _ a / σ_ v ratio is suggested as 0.01. Also, the maximum β /CF for soils with clay friction lower and higher than 50 % are 0.008 and 0.001, respectively. The minimum β /CF value for both conditions is 0.0001.

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2015
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI 

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2014
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI < 15 % was between 0.01 and 0.3, while for LI closed to 25 %, the range was between 0.01 and 0.1.

Ahmad Beng Hong Kueh - One of the best experts on this subject based on the ideXlab platform.

  • Criteria of Acceptance for Constant Rate of Strain Consolidation Test for Tropical Cohesive Soil
    Geotechnical and Geological Engineering, 2016
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Ahmad Beng Hong Kueh, Lam Chee Siang
    Abstract:

    In this study, the rapid consolidation equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer, consuming merely a few hours for the whole precedure to determine the consolidation characteristics of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing, requiring a good estimation of the loading rate such that it is ideal for the achievement of steady state condition during testing. The steady state condition is achieved when the c _ v values from drained and undrained face of CRS converged with the c_v from Oedometer test. A slightly modification has been made on the normal constant rate of strain (CRS) test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. This research has produced a set of criteria for determining the suitable rate for the rapid consolidation test based on the ratio of normalized strain rate, β , and proposed a new coefficient in terms of a ratio of β to clay fraction (CF), as a part of new criteria for testing a fine soil. Four types of sample were tested with different rates of strain using the RACE and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found from the study that the minimum value of normalized strain rate, β , for the CRS test is 0.005 and for the u _ a / σ_ v ratio is suggested as 0.01. Also, the maximum β /CF for soils with clay friction lower and higher than 50 % are 0.008 and 0.001, respectively. The minimum β /CF value for both conditions is 0.0001.

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2015
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI 

  • Development of Rapid Consolidation Equipment for Cohesive Soil
    Geotechnical and Geological Engineering, 2014
    Co-Authors: Khairul Anuar Kassim, Ahmad Safuan A. Rashid, Lam Chee Siang, Ahmad Beng Hong Kueh, Chong Siaw Yah, Norhazilan Mohd Noor, Hossein Moayedi
    Abstract:

    In this study, rapid consolidation cell equipment (RACE) was developed as an alternative device to the conventional consolidation test using Oedometer to determine the consolidation characteristic of cohesive soil. RACE operates based on the constant rate of strain (CRS) consolidation theory, which is a continuous loading method of testing and could accelerate the consolidation process for cohesive soil, shortening the time consumption from 1 week (when using Oedometer and Rowe cell tests) to only a few hours. A slightly modification has been made on the normal CRS test by proposing a direct back pressure System to the specimen using a tube to saturate the soil sample. Four types of sample were tested with different rates of strain using the RACE equipment and their results were compared with those conducted using the Oedometer on the same soil type, from which fairly good agreements were evident in many specimens. It was found that, the RACE equipment is capable to determine the consolidation characteristic of the cohesive soil. In this study, the acceptable strain rates were proposed as compared with the Liquidity Indices for cohesive soil. It was found that the range of strain rate of CRS test for LI < 15 % was between 0.01 and 0.3, while for LI closed to 25 %, the range was between 0.01 and 0.1.