Thermal Cracking of Massive Concrete Structures

2019 ◽  
Keyword(s):  
Concrete Structures ◽  
Thermal Cracking ◽  
Massive Concrete

scholarly journals XFEM for Thermal Crack of Massive Concrete

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Guowei Liu ◽  
Yu Hu ◽  
Qingbin Li ◽  
Zheng Zuo
Keyword(s):  
Cooling System ◽  
Concrete Structures ◽  
Thermal Cracking ◽  
Pipe System ◽  
Degree Of Hydration ◽  
Thermal Cracks ◽  
Massive Concrete ◽  
Cooling Pipe ◽  
Equivalent Equation ◽  
Viscoelastic Constitutive Model

Thermal cracking of massive concrete structures occurs as a result of stresses caused by hydration in real environment conditions. The extended finite element method that combines thermal fields and creep is used in this study to analyze the thermal cracking of massive concrete structures. The temperature field is accurately simulated through an equivalent equation of heat conduction that considers the effect of a cooling pipe system. The time-dependent creep behavior of massive concrete is determined by the viscoelastic constitutive model with Prony series. Based on the degree of hydration, we consider the main properties related to cracking evolving with time. Numerical simulations of a real massive concrete structure are conducted. Results show that the developed method is efficient for numerical calculations of thermal cracks on massive concrete. Further analyses indicate that a cooling system and appropriate heat preservation measures can efficiently prevent the occurrence of thermal cracks.

Thermal Cracking Resistance in Massive Concrete Structures in the Winter Building Period

2015 ◽  
Vol 725-726 ◽  
pp. 431-441 ◽  
Author(s):  
Kirill Semenov ◽  
Yuri Barabanshchikov
Keyword(s):  
Concrete Structures ◽  
Thermal Cracking ◽  
Electric Heating ◽  
Winter Period ◽  
Temperature Influence ◽  
Technological Parameters ◽  
Cracking Resistance ◽  
Massive Concrete ◽  
Calculation Results ◽  
Concrete Hardening

The article deals with issues of the thermal cracking resistance in massive concrete and reinforced concrete structures during the building period. The paper lists the calculation results of the NPP reactor foundation mat thermal stressed state and thermal cracking resistance. The research also considers the concrete hardening temperature influence on its thermo-physical and deformation characteristics. The deformation criterion is used to calculate the concrete thermal cracking resistance. In addition, the paper focuses on the assignment of safe concrete pouring technological parameters in the winter period. Furthermore, the article estimates the necessity of the structure peripheral electric heating during the building period.

New experimental approach to accelerate the development of internal swelling reactions (ISR) in massive concrete structures

2021 ◽  
Vol 313 ◽  
pp. 125388
Author(s):  
Jacques Jabbour ◽  
Aveline Darquennes ◽  
Loic Divet ◽  
Rachid Bennacer ◽  
Jean-Michel Torrenti ◽  
...  
Keyword(s):  
Experimental Approach ◽  
Concrete Structures ◽  
Massive Concrete

Comparison of thermal cracking potential evaluation criteria for mass concrete structures

2021 ◽  
Vol 54 (6) ◽  
Author(s):  
Jianda Xin ◽  
Yi Liu ◽  
Guoxin Zhang ◽  
Zhenhong Wang ◽  
Ning Yang ◽  
...  
Keyword(s):  
Evaluation Criteria ◽  
Concrete Structures ◽  
Thermal Cracking ◽  
Mass Concrete ◽  
Cracking Potential ◽  
Potential Evaluation
Sign in / Sign up

Export Citation Format

Share Document