Memoirs of the Graduate School of Science and Engineering Shimane University. Series A

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Memoirs of the Graduate School of Science and Engineering Shimane University. Series A 37
2003-12-15 発行

気泡混合軽量土の一軸圧縮強さに及ぼす温度履歴の影響

Effects of Temperature Histories on Unconfined Compressive Strength of Foamed Mixture Lightweight Soil
Kamei, Takeshi
Horikiri, Yasunori
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This paper describes the effects of temperature increase of fill induced by cement hydration on the unconfined compressive strength of foamed mixture lightweight soils at a construction site. The specimen was cured at curing temperatures based on the temperatures(10 to 95℃) obtained from model and field tests before unconfined compression testing, to investigate the effects of temperature increase due to cement hydration on the unconfined compressive strength of foamed mixture lightweight soils. The unconfined compressive strengths of the specimen subjected to high curing temperature histories were compared with those of the specimen cured at 20℃. Unconfined compressive strength decreases significantly under high temperature histories. The unconfined compressive strength cured for 28days at high curing temperature(10 to 95℃) is about 70% that of specimens cured at 20℃. Finally, we find, that revaluation of the design strength is necessary and temperature management is important when foamed mixture lightweight soils are constructed.