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학술저널
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대한건축학회 대한건축학회 논문집 - 구조계 大韓建築學會論文集 構造系 第25卷 第1號
발행연도
2009.1
수록면
137 - 148 (12page)

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A penetrating needle into a membrane was first developed on the basis and lap joints of the observation of bamboo grass tips and lawn grass tips. Then, the penetrating load of the needle was measured for various waterproofing membranes at the needle displacement speed of 1㎜/min. These two types of grass were also planted in the containers, inside of which the waterproofing membranes were applied. After the rearing of 1 year, the membranes were inspected. The two results of each membrane type were compared. We were interested in the maximum strength and the strength at 1㎜ displacement. These values are considered to be useful as indices for the estimation of the waterproofing membranes' root resistance.
The resistance of the membranes at lap joints having non adhesives and different bonding strengths was determined as a measure of its vulnerability to root penetration. Results from field tests indicated that bamboo grass tips (rhizome) easily penetrated lap joints of non?adhesive membranes. Hence it was evident that waterproofing membrane systems having nonadhesive overlapped joints do not provide adequate resistance to root penetration of the membrane. The resistance to root penetration is dependent on the adhesive strength of the lap joint. The specimens with lap joints having lower bonding strengths were readily penetrated by the rhizome. From this knowledge, a test method was developed to assess the expected resistance of membrane lap joints to the penetration of a needle. The needle, in essence, emulated the shape of bamboo grass tips. Thereafter, the test result from field test on the resistance of membrane to the penetration of roots were compared to those obtained from tests using a penetrating needle. Results from the penetrating needle test indicated that the resistance measured at a 10 ㎜ displacement of needle was effective means of evaluating the resistance of membrane lap joints to the penetration of roots.

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Abstract
1. 서론
2. 시험용 모의 바늘의 제작
3. 방수층 일반부의 침입력 측정 장치와 측정 방법
4. 실제 식물을 이용한 일반부의 내근성 시험
5. 고찰
6. 방수층 조인트부의 침입력 측정 장치와 측정 방법
7. 실제 식물을 이용한 조인트부에서의 지하경 및 뿌리의 신장 관찰
8. 실 식물을 이용한 조인트부의 내근성 평가 시험 방법의 검토
9. 결론
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