SHEAR STRENGTH CHARACTERISTICS OF FOAM SHIELD TUNNELING EXCAVATION SURPLUS SOIL MIXED WITH IRON AND STEEL SLAG UNDER SEAWATER ENVIRONMENT AND LABORATORY CASTING EXPERIMENT

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  • 鉄鋼スラグを混合した気泡シールド工事発生土の海水環境下でのせん断強度特性と室内水中打設実験

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<p> In this study, focusing on the biodegradation of surplus excavation soil, the authors conducted unconfined compression tests and investigated the influence of biodegradation on the shear strength of mixed soil with iron and steel slag. The results show that with biodegradation and ground granulated blast furnace slag, the addition of foaming agent and blow-off inhibitor did not influence the shear strength of soil. However, with fine content of steelmaking slag, the strength of specimens with biodegradation was lower than other specimens. On the other hand, without biodegradation but with ground granulated blast furnace slag, the strength of specimens without biodegradation was lower than other specimens. Moreover, the addition of foaming agent and blow-off inhibitor did not influence the deformation characteristics of soil.</p>

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