|
|
|
한국건축시공학회 / v.6, no.3, 2006년, pp.99-105 
|
고온조건하에서 플라이애시를 사용한 콘크리트의 압축강도증진 해석
( Estimation of Compressive Strength of Fly Ash Concrete subjected to High Temperature ) |
| 한민철; 청주대학교 건축공학부;
|
|
|
 |
|
| |
| 초 록 |
|
|
| In this paper, the estimation of compressive strength of concrete incorporating fly ash subjected to high temperature is discussed. Ordinary Portland cement and fly ash cement(30% of fly ash) were used, respectively. Water to binder ration ranging from 30% to 60% and curing temperature ranging from $20^{circ}C{sim}65^{circ}C$ were also adopted for the experimental parameters. According to results, at the high temperature, FAC had higher strength development at early age than OPC concrete and it kept its high strength development at later age due to accelerated pozzolanic reaction subjected to high temperature. For strength estimation, Logistic model based on maturity equation and Carino model based on equivalent age were applied to verify the availability of estimation model. It shows that fair agreements between calculated values and measured values were obtained evaluating compressive strength with logistic curve. The application of logistic model at high temperature had remarkable deviations in the same maturity. Whereas, the application of Carino model showed good agreements between calculated values and measured ones regardless of type of cement and W/B. However, some correction factors should be considered to enhance the accuracy of strength estimation of concrete. |
| |
| 키워드 |
| 고온조건;적산온도;강도증진;플라이애시;로지스틱모델;등가재령;High temperature;Maturity;Strength development;Fly ash;Logistic model;Equivalent age; |
| |
|
|
|
|
한국건축시공학회지 / v.6, no.3, 2006년, pp.99-105
한국건축시공학회
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634741682670)
언어 : 한국어 |
|
| 논문 제공 : KISTI 한국과학기술정보연구원 |
|
|
|
|
|
|
