DCM 공법을 기초처리에 적용하기 위해 필수적인 선행공정이 시험시공이다. 이 연구에서 3단계 시험시공과정을 통해 현장 품질관리기준을 만족하는 W/C(시멘트량) 및 시공속도(관입 및 인발속도)의 최적범위를 도출하는 것이 이 논문의 연구목적으로 DCM 본시공의 공학적 품질관리방안이라고 할 수 있다....
DCM 공법을 기초처리에 적용하기 위해 필수적인 선행공정이 시험시공이다. 이 연구에서 3단계 시험시공과정을 통해 현장 품질관리기준을 만족하는 W/C(시멘트량) 및 시공속도(관입 및 인발속도)의 최적범위를 도출하는 것이 이 논문의 연구목적으로 DCM 본시공의 공학적 품질관리방안이라고 할 수 있다.
DCM 공법을 기초처리에 적용하기 위해 필수적인 선행공정이 시험시공이다. 이 연구에서 3단계 시험시공과정을 통해 현장 품질관리기준을 만족하는 W/C(시멘트량) 및 시공속도(관입 및 인발속도)의 최적범위를 도출하는 것이 이 논문의 연구목적으로 DCM 본시공의 공학적 품질관리방안이라고 할 수 있다.
The purpose of this study through test execution for DCM is to investigate the reasonable range of water cement ratio for cement amount and execution velocity for descent and ascent satisfying quality management criteria about design criterion strength and TCR. In this study, the fulfillment of test...
The purpose of this study through test execution for DCM is to investigate the reasonable range of water cement ratio for cement amount and execution velocity for descent and ascent satisfying quality management criteria about design criterion strength and TCR. In this study, the fulfillment of test execution consists of total 3 steps. The first step, unconfined compression strength test for indoor mixed soil of result was to satisfy quality management criteria, indoor mixed strength(3.38MPa) about all 3 kinds of water cement ratio(0.7:1, 0.8:1, 0.9:1) for cement amount(210, 230, 250kg/㎥). The second step, unconfined compression strength test for executed soils was performed by 2 kinds of water cement ratio(0.7:1, 0.8:1) for cement amount(210, 230, 250kg/㎥) and execution velocity for descent 0.7m/sec, 08m/sec and ascent 1.4m/sec, 1.5m/sec respectively. The result of test showed to satisfy design criterion strength, 2.25MPa and specifed TCR, 85% at water cement ratio, 0.7:1 for cement amount, 250kg/㎥. Partially in mix proportioning, the increment of cement amount reduced the unconfined compression strength for executed soils. This means to improve weak soils homogeneously because their characteristics is unhomogeneous and anisotropic point. The third step, unconfined compression strength test for boring executed soils was performed by 2 kinds of water cement ratio(0.7:1, 0.8:1) for cement amount(210, 230, 250kg/㎥) and execution velocity for descent 0.7m/sec and ascent 1.4m/sec. The result of test showed to satisfy design criterion strength, 2.25MPa and specifed TCR, 85% at water cement ratio, 0.7:1 for cement amount, 250kg/㎥. Then, DCM exexcution was perfomed by the result based on the third step.
The purpose of this study through test execution for DCM is to investigate the reasonable range of water cement ratio for cement amount and execution velocity for descent and ascent satisfying quality management criteria about design criterion strength and TCR. In this study, the fulfillment of test execution consists of total 3 steps. The first step, unconfined compression strength test for indoor mixed soil of result was to satisfy quality management criteria, indoor mixed strength(3.38MPa) about all 3 kinds of water cement ratio(0.7:1, 0.8:1, 0.9:1) for cement amount(210, 230, 250kg/㎥). The second step, unconfined compression strength test for executed soils was performed by 2 kinds of water cement ratio(0.7:1, 0.8:1) for cement amount(210, 230, 250kg/㎥) and execution velocity for descent 0.7m/sec, 08m/sec and ascent 1.4m/sec, 1.5m/sec respectively. The result of test showed to satisfy design criterion strength, 2.25MPa and specifed TCR, 85% at water cement ratio, 0.7:1 for cement amount, 250kg/㎥. Partially in mix proportioning, the increment of cement amount reduced the unconfined compression strength for executed soils. This means to improve weak soils homogeneously because their characteristics is unhomogeneous and anisotropic point. The third step, unconfined compression strength test for boring executed soils was performed by 2 kinds of water cement ratio(0.7:1, 0.8:1) for cement amount(210, 230, 250kg/㎥) and execution velocity for descent 0.7m/sec and ascent 1.4m/sec. The result of test showed to satisfy design criterion strength, 2.25MPa and specifed TCR, 85% at water cement ratio, 0.7:1 for cement amount, 250kg/㎥. Then, DCM exexcution was perfomed by the result based on the third step.
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