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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.13 No.3
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Mechanical characteristics of high-performance concrete shield segment containing ground granulated blast furnace slag and their improvement by steam curing

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2011, v.13 no.3, pp.233-242





& (2011). Mechanical characteristics of high-performance concrete shield segment containing ground granulated blast furnace slag and their improvement by steam curing. (사)한국터널지하공간학회, 13(3), 233-242.
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Abstract

This study aimed to evaluate the applicability of high-strength concrete mixed with blast furnace slag to shield segment lining in order to improve its performance and economic efficiency. Especially, it was also intended to derive the optimum replacing ratio of ground granulated blast furnace slag to ordinary cement as well as the optimum stream curing condition for shield segment concrete with the design strength of 60 MPa. From the a series of experiments, the condition of 50% replacement of ordinary cement by ground granulated blast furnace slag and unit water content of 125 kg/m3 was proposed as the optimum mixing condition. Comparing with standard curing conditions, it was also possible to expect approximately 110～442% strength improvement of concrete by steam curing in the same mixing condition.

keywords
Shield tunnel, segment, ground granulated blast furnace slag, steam curing, 쉴드터널, 세그먼트, 고로슬래그 미분말, 증기양생, Shield tunnel, segment, ground granulated blast furnace slag, steam curing

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