The Experts below are selected from a list of 231 Experts worldwide ranked by ideXlab platform

M F Gu - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study on the electrical resistivity of Soil-Cement admixtures
    Environmental Geology, 2008
    Co-Authors: Song Yu Liu, L. H. Han, Yan-jun Du, M F Gu
    Abstract:

    Recently in China, Soil-Cement is widely used to improve the soft ground in the highway construction engineering. Literature studies are mainly investigating the mechanical properties of the Soil-Cement, while its properties of the electrical resistivity are not well addressed. In this paper, the properties of the electrical resistivity of the reconstituted Soil-Cement and the in situ Soil-Cement columns are investigated. The test results show that the electrical resistivity of the Soil-Cement increases with the increase in the Cement-mixing ratio and curing time, whereas it decreases with the increase in the water content, degree of saturation and water-Cement ratio. A simple equation is proposed to predict the electrical resistivity of Soil-Cement under the condition of the specified curing time and water-Cement ratio. It is found that the electrical resistivity has a good relationship with the unconfined compression strength and blow count of SPT. It is expected that the electrical resistivity method can be widely used for checking/controlling the quality of Soil-Cement in practice.

A A Javadi - One of the best experts on this subject based on the ideXlab platform.

  • Strength of a clay Soil and Soil–Cement mixture with resin
    Proceedings of the Institution of Civil Engineers - Ground Improvement, 2013
    Co-Authors: A R Estabragh, I Beytolahpour, Mohammad Naseh, A A Javadi
    Abstract:

    A series of laboratory experiments were carried out to investigate the effect of resin on the strength of a clay Soil and Soil–Cement mixtures. One group of tests were carried out on samples of the clay Soil that were prepared with different resin contents. Another group of tests were conducted on mixtures of Soil–Cement and Soil–Cement–resin with specified resin contents. The results show that adding more than 10% resin increases the strength of the Soil, whereas at resin contents below 10% no significant effect was observed. The strengths of the samples of Soil, Soil–Cement mixture and Soil–Cement–resin mixture increased with increasing percentages of Cement and resin. The results also show that the increase in strength is a function of percentage of agents and curing time.

  • effect of resin on the strength of Soil Cement mixture
    Journal of Materials in Civil Engineering, 2011
    Co-Authors: A R Estabragh, I Beytolahpour, A A Javadi
    Abstract:

    A mixture of Soil-Cement and acrylic resin is used to improve the engineering properties of the Soil for construction. This paper presents the results of an investigation into the mechanical behavior of Soil-Cement mixtures with different percentages of acrylic resin. A series of experiments was conducted on mixtures of Soil-Cement and Soil-Cement-resin with different percentages of two different resins. The results show that by increasing the Cement content in the Soil-Cement mixture, the maximum dry density increases, and the optimum water content decreases in compaction tests. Compressive strength tests on Soil-Cement show that the increase in strength depends on the Cement content and the curing time. The results also indicate that the strength of Soil-Cement is increased considerably by adding acrylic resin as an additive material. For a given Cement content, the increase in shear strength is a function of curing time and the percentage of resin.

Song Yu Liu - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study on the electrical resistivity of Soil-Cement admixtures
    Environmental Geology, 2008
    Co-Authors: Song Yu Liu, L. H. Han, Yan-jun Du, M F Gu
    Abstract:

    Recently in China, Soil-Cement is widely used to improve the soft ground in the highway construction engineering. Literature studies are mainly investigating the mechanical properties of the Soil-Cement, while its properties of the electrical resistivity are not well addressed. In this paper, the properties of the electrical resistivity of the reconstituted Soil-Cement and the in situ Soil-Cement columns are investigated. The test results show that the electrical resistivity of the Soil-Cement increases with the increase in the Cement-mixing ratio and curing time, whereas it decreases with the increase in the water content, degree of saturation and water-Cement ratio. A simple equation is proposed to predict the electrical resistivity of Soil-Cement under the condition of the specified curing time and water-Cement ratio. It is found that the electrical resistivity has a good relationship with the unconfined compression strength and blow count of SPT. It is expected that the electrical resistivity method can be widely used for checking/controlling the quality of Soil-Cement in practice.

  • Experimental study on the electrical resistivity of Soil–Cement admixtures
    Environmental Geology, 2007
    Co-Authors: Song Yu Liu, L. H. Han
    Abstract:

    Recently in China, Soil–Cement is widely used to improve the soft ground in the highway construction engineering. Literature studies are mainly investigating the mechanical properties of the Soil–Cement, while its properties of the electrical resistivity are not well addressed. In this paper, the properties of the electrical resistivity of the reconstituted Soil-Cement and the in situ Soil–Cement columns are investigated. The test results show that the electrical resistivity of the Soil–Cement increases with the increase in the Cement-mixing ratio and curing time, whereas it decreases with the increase in the water content, degree of saturation and water–Cement ratio. A simple equation is proposed to predict the electrical resistivity of Soil–Cement under the condition of the specified curing time and water–Cement ratio. It is found that the electrical resistivity has a good relationship with the unconfined compression strength and blow count of SPT. It is expected that the electrical resistivity method can be widely used for checking/controlling the quality of Soil–Cement in practice.

Kenneth D. Hansen - One of the best experts on this subject based on the ideXlab platform.

  • RCC/Soil-Cement: What’s the Difference?
    Journal of Materials in Civil Engineering, 2005
    Co-Authors: Ying-kit Choi, Kenneth D. Hansen
    Abstract:

    Roller-compacted concrete (RCC) and Soil-Cement are similar materials, in that they both are of zero-slump consistency and are placed and compacted with earth-moving or paving equipment. The construction methods used to produce RCC and Soil-Cement are also quite similar. Yet, in spite of these similarities, there are some fundamental differences between RCC and Soil-Cement. The following aspects of these two materials are discussed and compared: historical applications with an emphasis on water resources, mixture ingredients, testing procedures, design procedures, properties, construction methods, and costs. This paper identifies the limitations of each material based on properties and performance so that each material is properly applied to a project. Some recommendations and suggestions are introduced to better understand the practical differences and to improve the quality and cost-effectiveness of using these two similar materials.

  • Erosion and abrasion resistance of Soil-Cement and roller-compacted concrete
    2002
    Co-Authors: Kenneth D. Hansen
    Abstract:

    Soil-Cement and roller-compacted concrete (RCC) are increasingly being used in severe conditions such as spillways, bank protection and other water resource applications, where durability against erosion and abrasion is an important design criterion. This report contains the results of a literature search of laboratory tests and field performance studies investigating erosion and abrasion resistance of Soil-Cement and RCC. The report is also based on the results of a survey of methods used to design Soil-Cement and RCC subjected to high velocity or debris-laden flow. Findings indicate that the erosion resistance of Soil-Cement and RCC increases with increased compressive strength, harder aggregates and a greater percentage of coarse aggregate in the mix design. Both laboratory and field studies show that the rate of erosion of Soil-Cement and RCC diminishes over time. Soil-Cement contains little coarse aggregate, so its erosion resistance is controlled by the compressive strength of the Cement paste. For high flow velocities of clean water or abrasion erosion conditions, compressive strength needs to be increased or RCC used. The criterion for mixture proportioning of RCC to withstand erosion is to specify a certain minimum compressive strength at a certain age. For the most extreme exposure conditions, improved erosion resistance can also be obtained by using the hardest available aggregate in the RCC mix.

  • CONSTRUCTION OF STAIR-STEPPED Soil-Cement BANK PROTECTION
    Geotechnical special publication, 2000
    Co-Authors: Kenneth D. Hansen, Cliff Schexnayder
    Abstract:

    Along normally dry rivers in the arid southwestern United States Soil-Cement has become a popular method of protecting banks and bridges abutments from erosion and collapse during floods. This paper focuses on construction of Soil-Cement bank protection. Construction topics discussed include control of water, central mixing plants, and the equipment needed to transport, spread, compact and cure Soil-Cement built in stair-stepped fashion on relatively steep riverbanks. Additionally the materials, mixture proportions and section dimensions of Soil-Cement bank protection, are discussed. Production rates and cost factors are also presented.

  • Soil Cement is Big in Texas Water Projects
    Concrete international, 1991
    Co-Authors: Kenneth D. Hansen
    Abstract:

    The State of Texas is a leader in Soil Cement water-resource applications. Many uses of Soil Cement for water control had their initial application in Texas. The article describes some of the innovations in the design and construction of Soil Cement that had their start in Texas. The 108 ft high embankmant of the Toledo Bend Dam was the fisrt major dam project in which Soil Cement slope protection was used. The solid Soil Cement design for the long low ring dike at the Barney M. Davis Power Station cooling water reservoir is another example. The design of the 63 ft high Palmetto Bend dam, incorporates both the traditional stair stepped Soil Cement slope protection for the dam and a 'plating' design for the intake channel. At the South Texas Nuclear Project, the Soil Cement protection for nearly 20 miles of embankment to form a 700-acre cooling water reservoir and a smaller esential cooling pond represents the largest volume of Soil Cement used for a water control project worldwide. The design of the Richland-Chambers dam is described, and design trends for Soil Cement water control projects are discussed.

L. H. Han - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study on the electrical resistivity of Soil-Cement admixtures
    Environmental Geology, 2008
    Co-Authors: Song Yu Liu, L. H. Han, Yan-jun Du, M F Gu
    Abstract:

    Recently in China, Soil-Cement is widely used to improve the soft ground in the highway construction engineering. Literature studies are mainly investigating the mechanical properties of the Soil-Cement, while its properties of the electrical resistivity are not well addressed. In this paper, the properties of the electrical resistivity of the reconstituted Soil-Cement and the in situ Soil-Cement columns are investigated. The test results show that the electrical resistivity of the Soil-Cement increases with the increase in the Cement-mixing ratio and curing time, whereas it decreases with the increase in the water content, degree of saturation and water-Cement ratio. A simple equation is proposed to predict the electrical resistivity of Soil-Cement under the condition of the specified curing time and water-Cement ratio. It is found that the electrical resistivity has a good relationship with the unconfined compression strength and blow count of SPT. It is expected that the electrical resistivity method can be widely used for checking/controlling the quality of Soil-Cement in practice.

  • Experimental study on the electrical resistivity of Soil–Cement admixtures
    Environmental Geology, 2007
    Co-Authors: Song Yu Liu, L. H. Han
    Abstract:

    Recently in China, Soil–Cement is widely used to improve the soft ground in the highway construction engineering. Literature studies are mainly investigating the mechanical properties of the Soil–Cement, while its properties of the electrical resistivity are not well addressed. In this paper, the properties of the electrical resistivity of the reconstituted Soil-Cement and the in situ Soil–Cement columns are investigated. The test results show that the electrical resistivity of the Soil–Cement increases with the increase in the Cement-mixing ratio and curing time, whereas it decreases with the increase in the water content, degree of saturation and water–Cement ratio. A simple equation is proposed to predict the electrical resistivity of Soil–Cement under the condition of the specified curing time and water–Cement ratio. It is found that the electrical resistivity has a good relationship with the unconfined compression strength and blow count of SPT. It is expected that the electrical resistivity method can be widely used for checking/controlling the quality of Soil–Cement in practice.