STRENGTH DEVELOPMENT IN CEMENT STABILIZED LOW PLASTICITY AND COARSE GRAINED SOILS : LABORATORY AND FIELD STUDY

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概要

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• Laboratory and field strength development of cement stabilized coarse-grained soils are studied in this paper. A phenomenological model to assess the laboratory strength development is developed. The model is divided into the dry and the wet sides of optimum water content. At the optimum and on the wet side of optimum, the strength development in cement stabilized soils at a particular curing time is dependent only upon the soil-water/cement ratio, w/C, which can reflect the combined effects of water content and cement content. It is moreover premised that the relationship between strength and water content is symmetrical around the optimum water content (OWC) in the range of 0.8 to 1.2 times the OWC. The proposed model is useful for assessing the strength development wherein water content, cement content and compaction energy vary over a wide range. Only the test result of a single laboratory trial is needed. From the field study, it is found that the field roller-compacted strength, q_<ufr> is lower than the laboratory strength, q_<ul> under the same dry unit weight, soil-water/cement ratio and curing time due to several field factors. The ratio q_<ufr>/q_<ul> varies from 50 to 100%. Non-uniformity in mixing soil with cement is realized by the ratio of field hand-compacted strength to laboratory strength, q_<ufh>/q_<ul> ranging from 0.75 to 1.2. For most data, the field roller-compacted strength is 55 to 100% the field hand-compacted strength. This might be caused by the difference in compaction method and curing condition between laboratory and field stabilization. From this field observation and the proposed model, a practical procedure for repairing damaged roads using the pavement recycling technique is introduced. The procedure consists of the determination of cement content, the execution of the field stabilization and the examination of the field strength. It can save on sampling and laboratory testing and hence cost.

• 社団法人地盤工学会の論文

著者

• Horpibulsuk Suksun

  School Of Civil Engineering Suranaree University Of Technology

• KATKAN WANCHAI

  School of Civil Engineering, Suranaree University of Technology

• SIRILERDWATTANA WANCHAI

  School of Civil Engineering, Suranaree University of Technology

• RACHAN RUNGLAWAN

  Department of Civil Engineering, Mahanakorn University of Technology

• Rachan Runglawan

  Department Of Civil Engineering Mahanakorn University Of Technology

• Sirilerdwattana Wanchai

  School Of Civil Engineering Suranaree University Of Technology:department Of Highways

• Katkan Wanchai

  School Of Civil Engineering Suranaree University Of Technology

関連論文

• A CASE HISTORY ON UNDERPINNING FOR A DISTRESSED BUILDING ON HARD RESIDUAL SOIL UNDERNEATH NON-UNIFORM LOOSE SAND
• AN APPROACH FOR ASSESSMENT OF COMPACTION CURVES OF FINE GRAINED SOILS AT VARIOUS ENERGIES USING A ONE POINT TEST
• STRENGTH DEVELOPMENT IN CEMENT STABILIZED LOW PLASTICITY AND COARSE GRAINED SOILS : LABORATORY AND FIELD STUDY
• ROLE OF FLY ASH ON STRENGTH AND MICROSTRUCTURE DEVELOPMENT IN BLENDED CEMENT STABILIZED SILTY CLAY

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