KR100977811B1 - 판상-링형 구속시험방법에 의한 콘크리트의 수축균열평가방법 - Google Patents
판상-링형 구속시험방법에 의한 콘크리트의 수축균열평가방법 Download PDFInfo
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- KR100977811B1 KR100977811B1 KR1020080034732A KR20080034732A KR100977811B1 KR 100977811 B1 KR100977811 B1 KR 100977811B1 KR 1020080034732 A KR1020080034732 A KR 1020080034732A KR 20080034732 A KR20080034732 A KR 20080034732A KR 100977811 B1 KR100977811 B1 KR 100977811B1
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- concrete
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- shrinkage
- ring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
Abstract
Description
내부링 직경 (mm) |
100 | 150 | 200 |
시험체 평면 |
|||
응력 |
0.528×10-9 ~ 0.2×10-7 |
0.537×10-6 ~ 0.33×10-5 |
0.905×10-6 ~ 0.316×10-5 |
Claims (9)
- 다음의 각 단계로 이루어지는 판상-링형 구속시험방법에 의한 콘크리트의 수축균열 평가방법.(a) 평판 위에서 동심원을 이루도록 외부링과 내부링을 배치하는 단계;(b) 상기 외부링과 내부링 사이에 콘크리트를 타설, 양생하여 시험체를 제작하는 단계; 및(c) 육안 또는 센서에 의해 상기 시험체 상면의 균열발생시점을 측정하고, 크랙스케일(Crack Scale)로 상기 시험체 상면에 발생한 균열선의 폭과 길이를 재어 균열면적을 계산함으로서 균열발생량을 측정하고, 다음의 식에 의해 구속수축응력을 산정하는 단계;MPa = ε×E×AMPa : 구속수축응력ε : 콘크리트의 변형(mm)E : 콘크리트의 탄성계수(N/㎟)A : 콘크리트의 노출 면적(㎟)
- 제1항에서,상기 (b)단계는 고온 건조기를 사용하여 강제적인 급속 건조환경을 조성하여 초기재령에 콘크리트 표면균열이 유발되도록 양생함을 특징으로 하는 판상-링형 구속시험방법에 의한 콘크리트 수축균열 평가방법.
- 삭제
- 삭제
- 삭제
- 제1항에서,상기 (c)단계는, 상기 콘크리트 시험체 상면에 등간격의 동심원 4개를 긋고 상기 동심원들과 균열선이 만나는 점을 균열포인트로 정하여 상기 균열포인트의 갯수를 산정하는 과정; 을 더 포함하는 것을 특징으로 하는 판상-링형 구속시험방법에 의한 콘크리트 수축균열 평가방법.
- 제1항 또는 제2항 또는 제6항에서,상기 외부링은 직경이 400mm이고, 높이가 50mm인 것을 특징으로 하는 판상-링형 구속시험방법에 의한 콘크리트 수축균열 평가방법.
- 제1항 또는 제2항 또는 제6항에서,상기 내부링은 직경이 150mm이고, 높이가 70mm인 것을 특징으로 하는 판상-링형 구속시험방법에 의한 콘크리트 수축균열 평가방법.
- 제7항에서,상기 내부링은 하면 바깥쪽으로 콘크리트를 떠받치는 플랜지가 형성된 몰드형태로 구성된 것을 사용함을 특징으로 하는 판상-링형 구속시험방법에 의한 콘크리트 수축균열 평가방법.
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Cited By (1)
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CN102539656A (zh) * | 2011-12-24 | 2012-07-04 | 福州大学 | 一种水泥基材料抗裂性能快速评价方法 |
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KR101291504B1 (ko) * | 2011-05-24 | 2013-08-01 | 고려대학교 산학협력단 | 콘크리트 구속 수축 시험 장치 및 방법 |
CN102323397B (zh) * | 2011-07-29 | 2014-08-13 | 舟山市博远科技开发有限公司 | 一种混凝土开裂风险评价指数的测定方法 |
KR101331015B1 (ko) * | 2011-11-25 | 2013-11-19 | 한국건설생활환경시험연구원 | 콘크리트의 온도균열저항 측정장치 및 온도균열저항 측정방법 |
CN107020687B (zh) * | 2017-04-21 | 2018-03-20 | 河海大学 | 风速‑温度‑湿度三场可调控的混凝土养护系统及方法 |
CN111912686B (zh) * | 2020-08-11 | 2021-08-17 | 中南大学 | 混凝土水热养护及其应力应变一体化测试装置与测试方法 |
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US7331242B2 (en) | 2002-08-23 | 2008-02-19 | Ohio University | System for testing paving materials |
JP2004093402A (ja) | 2002-08-30 | 2004-03-25 | Yoshiaki Sato | コンクリートの収縮ひび割れ試験装置 |
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CN102539656A (zh) * | 2011-12-24 | 2012-07-04 | 福州大学 | 一种水泥基材料抗裂性能快速评价方法 |
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