논문 상세보기
pp.85-95
PURPOSES : For compaction control on the subgrade layer, the simple and economical test DCPT (Dynamic Cone Penetrometer Test) is being applied to the Korea Pavement Design Guide. However, compaction control is now difficult and to conduct in the field and is not performed in practice because the compaction degree is evaluated via the field density test as a pretreatment step when the compaction management process is evaluated by DCPT at the same time. Therefore, this study tried to propose a method considering an evaluation for the compaction degree using DCPT, via laboratory tests and field tests.
METHODS: The in-situ DCPT tests were conducted according to the types of subgrade soils in the field. Afterward, the field density tests for the compaction degree (R) of field samples and the experiments using DCPT were performed simultaneously in a self-made test container in the lab.
RESULTS: Through the DCPT test, compaction degree evaluation from the correlations proposed in this study was determined to be possible. Additional field tests could verify the proposed correlations between compaction degree with DCPT PR on the subgrade.
CONCLUSIONS: For the evaluation of the subgrade compaction degree using dynamic CPT, the correlations between compaction degree and DCPT PR on the subgrade layer are proposed from laboratory tests and field tests using DCPT and field density tests.
1. 서론
2. DCPT 시험을 활용한 국내외 노상토 다짐관리를 위한 문헌분석
2.1. 국내외 문헌분석
2.2. 국내외 다짐기준 비교분석
3. 한국형도로포장설계법의 동적 콘관입시험을활용한 노상토 다짐평가방법
3.1. 한국형 도로포장 설계법
3.2. 동적 콘관입시험
3.3. 설계탄성계수 MR 산정
4. 현장 동적 콘관입시험 및 실내시험
4.1. 현장 DCPT 시험실시
4.2. 현장 채취시료의 설계탄성계수 추정
5. 노상토 다짐도 평가 상관관계 개발
5.1. 상관관계식 적정성 분석
5.2. DCPT를 이용한 다짐도 평가 실내시험
5.3. 실내시험 다짐도별 DCPT 결과 분석
5.4. 다짐도와 PR 상관관계식 제안
5.5. 다짐도 평가 상관관계식 검증
6. 결론
REFERENCES
