A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures
Ground granulated blast furnace slag, which is a byproduct obtained during steel manufacture, has been widely used for concrete structures in order to reduce carbon dioxide emissions and improve durability. This paper presents a numerical model to evaluate compressive strength development of slag bl...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/1738417 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550409742319616 |
|---|---|
| author | Li-Na Zhang Wang Xiao-Yong Kyung-Taek Koh |
| author_facet | Li-Na Zhang Wang Xiao-Yong Kyung-Taek Koh |
| author_sort | Li-Na Zhang |
| collection | DOAJ |
| description | Ground granulated blast furnace slag, which is a byproduct obtained during steel manufacture, has been widely used for concrete structures in order to reduce carbon dioxide emissions and improve durability. This paper presents a numerical model to evaluate compressive strength development of slag blended concrete at isothermal curing temperatures and time varying curing temperatures. First, the numerical model starts with a cement-slag blended hydration model which simulates both cement hydration and slag reaction. The accelerations of cement hydration and slag reaction at elevated temperatures are modeled by Arrhenius law. Second, the gel-space ratios of hardening concrete are calculated using reaction degrees of cement and slag. Using a modified Powers’ gel-space ratio strength theory, the strength of slag blended concrete is evaluated considering both strengthening factors and weakening factors involved in strength development process. The proposed model is verified using experimental results of strength development of slag blended concrete with different slag contents and different curing temperatures. |
| format | Article |
| id | doaj-art-3bba449e25b040de98c6da57297168c8 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-3bba449e25b040de98c6da57297168c82025-02-03T06:06:46ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/17384171738417A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing TemperaturesLi-Na Zhang0Wang Xiao-Yong1Kyung-Taek Koh2Department of Architectural Engineering, Kangwon National University, Chuncheon-Si 200-701, Republic of KoreaDepartment of Architectural Engineering, Kangwon National University, Chuncheon-Si 200-701, Republic of KoreaStructural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si 411-712, Republic of KoreaGround granulated blast furnace slag, which is a byproduct obtained during steel manufacture, has been widely used for concrete structures in order to reduce carbon dioxide emissions and improve durability. This paper presents a numerical model to evaluate compressive strength development of slag blended concrete at isothermal curing temperatures and time varying curing temperatures. First, the numerical model starts with a cement-slag blended hydration model which simulates both cement hydration and slag reaction. The accelerations of cement hydration and slag reaction at elevated temperatures are modeled by Arrhenius law. Second, the gel-space ratios of hardening concrete are calculated using reaction degrees of cement and slag. Using a modified Powers’ gel-space ratio strength theory, the strength of slag blended concrete is evaluated considering both strengthening factors and weakening factors involved in strength development process. The proposed model is verified using experimental results of strength development of slag blended concrete with different slag contents and different curing temperatures.http://dx.doi.org/10.1155/2016/1738417 |
| spellingShingle | Li-Na Zhang Wang Xiao-Yong Kyung-Taek Koh A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures Advances in Materials Science and Engineering |
| title | A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures |
| title_full | A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures |
| title_fullStr | A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures |
| title_full_unstemmed | A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures |
| title_short | A Microstructure Based Strength Model for Slag Blended Concrete with Various Curing Temperatures |
| title_sort | microstructure based strength model for slag blended concrete with various curing temperatures |
| url | http://dx.doi.org/10.1155/2016/1738417 |
| work_keys_str_mv | AT linazhang amicrostructurebasedstrengthmodelforslagblendedconcretewithvariouscuringtemperatures AT wangxiaoyong amicrostructurebasedstrengthmodelforslagblendedconcretewithvariouscuringtemperatures AT kyungtaekkoh amicrostructurebasedstrengthmodelforslagblendedconcretewithvariouscuringtemperatures AT linazhang microstructurebasedstrengthmodelforslagblendedconcretewithvariouscuringtemperatures AT wangxiaoyong microstructurebasedstrengthmodelforslagblendedconcretewithvariouscuringtemperatures AT kyungtaekkoh microstructurebasedstrengthmodelforslagblendedconcretewithvariouscuringtemperatures |