気泡混合処理土の強度に及ぼす供試体寸法の影響

概要

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To use the lightweight geomaterial is an effective design to reduce the construction cost on the soft ground. Lightweight soil using air bubble is one of the most popular geomaterial and the strength varies widely even if the sample is made in the laboratory. Scale effect should be considered for the kind of material in order to evaluate the strength of the earth structure. Six batches of lightweight soils were prepared by a particular mix design under two different making methods. Samples of three different sizes were taken from each batch and measured the unit weight and the unconfined compression strength. Generally, the strength depends on the unit weight. The unit weight was very sensitive for the experiment and the relationship between the strength and the unit weight could not be found. The scale effect for the strength did not become clear in the condition of the experiment. But it was confirmed that the standard size sample used in the laboratory test was proper to evaluate the strength of the soil because the dispersion was small.
近畿大学工業高等専門学校の論文
2006-12-01