JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Characteristics of the 80MPa High Strength Concrete according to the Hot Weather Outside Temperature conditions
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Characteristics of the 80MPa High Strength Concrete according to the Hot Weather Outside Temperature conditions
Jung, Yong-Wook; Lee, Seung-Han;
  PDF(new window)
 Abstract
This paper evaluates the effect of hot weather conditions on the fresh concrete characteristics of 80-MPa high-strength concrete. The slump flow, packing ability, setting time, hydration heat, and compressive strength were evaluated under exterior temperatures of , , and . The slump flow, arrival speed of 500 mm, and their changes with the elapsed time were found to bring the occurrence of rapid slump loss forward by about 30 minutes when increasing the temperature by from . The initial and final setting times of the concrete at were 7 hours and 12 hours, which were reduced by 1 hour and 3 hours at and by 2 hours and 5 hours at , respectively. The hydration heat characteristics at and were similar in terms of the highest temperature of the concrete casting depth and the time when the maximum temperature occurred. However, at , the maximum temperature occurred about 4 hours earlier, and the highest temperature per the concrete casting depth increased by about . Therefore, it is concluded that the characteristics can vary according to the exterior temperature. Thus, quality assurance should consider workability, temperature cracks due to hydration heat, the properties of strength development, and other characteristics.
 Keywords
Hot weather;Exterior temperature;High strength;Elapsed time change;
 Language
Korean
 Cited by
 References
1.
Yu Shin Sohn, Ho Wang, Gyu Sik Lee and Seung Hoon Lee, (2006). An Application of 150MPa Ultra High Strength Concrete on a Residential-Commercial Building. Magazine of the korea concrete institute, 18(5), 59-64.

2.
Kwang Soo Youm, Hun Kyu Jeon and Heung Youl Kim. (2009). Fire Test of Fiber Cocktail Reinforced High Strength Concrete Columns with Loading. Journal of the Korea Concrete Institute, 21(4), 473-480. DOI: http://dx.doi.org/10.4334/JKCI.2009.21.4.473 crossref(new window)

3.
Kyoung Min Kim, Cheon Goo Han, (2005), Technical Application for Cold weather and Hot weather Concretes, Magazine of the korea concrete institute, 17(1), 28-33.

4.
Chae Yong Lim, Young Jun Son, Jae Dam Ha, Chang Woon Kang(2012), Study on the Effect of Hot Weather on Concrete Strength, Proceedings of the Korea Concrete Institute, Vol. 24, No. 2, 749-750.

5.
Park, C. G., Won, J. P., &Kang, J. W. (2004). Recommendations of Environmental Reduction Factor of FRP Rebar for Durability Design of Concrete Structure. Journal of the Korea Concrete Institute, 16(4), 529-539. DOI: http://dx.doi.org/10.4334/JKCI.2004.16.4.529 crossref(new window)

6.
Park, S. (2005). A Study on Concrete Material Quality Management Based on Various Test of Construction Condition under Hot Weather Circumstance. Journal of the Korea Institute of Building Construction, 5(3), 91-99. DOI: http://dx.doi.org/10.5345/JKIC.2005.5.3.016 crossref(new window)

7.
Seung Han Lee, Yong Wook Jung. (2007), Mix design of high performance concrete using maximum density theory. Journal of the Korea Concrete Institute, 19(3), 377-383. DOI: http://dx.doi.org/10.4334/JKCI.2007.19.3.377 crossref(new window)

8.
Se Jin Jeon, Myung Sung Choi and Young Jun Kim, (2006), An Advanced Assessment Strategy of Thermal Cracks Induced by Hydration Heat and Internal Restraint, Journal of the Korea Concrete Institute, 18(5), 677-685. DOI: http://dx.doi.org/10.4334/JKCI.2006.18.5.677 crossref(new window)