The Resistivity Method is Used to Evaluate The Curing Degree of High-performance Concrete
[1]LI Meili,XU Shanshan,QIAN Jueshi,et al.The Resistivity Method is Used to Evaluate The Curing Degree of High-performance Concrete[J].Journal of Zhengzhou University (Engineering Science),2009,30(01):106-110.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
30卷
Number of periods:
2009 01
Page number:
106-110
Column:
Public date:
1900-01-01
- Title:
- The Resistivity Method is Used to Evaluate The Curing Degree of High-performance Concrete
- Keywords:
- resistivity; evaluation; conservation; High-performance concrete
- CLC:
- -
- DOI:
- -
- Abstract:
- A new resistivity method for judging the degree of concrete curing is proposed: using built-in copper electrode and improved resistivity measurement method, three typical conservation systems are selected: natural curing, standard curing and water curing, and the change of resistivity at different depths reflects the humidity gradient change inside concrete, and then reflects the curing status of concrete. The test results show that the resistivity of concrete is significantly affected by the curing conditions, and the curing degree of concrete can be well reflected by the difference in resistivity at different depths from the surface, and different curing systems mainly affect the resistivity of concrete at 3~1 cm from the surface. Based on the resistivity of concrete, the curing quality can be divided into three grades, namely adequate curing, general curing and poor curing. For fly ash high-performance concrete, the resistivity at 3 cm away from the surface of concrete at 28 days < 2 kΩ·cm is fully cured, 15 kΩ·cm~15 kΩ·cm is generally cured, and the > 100 kΩ·cm is poorly maintained. The resistivity method can be effectively applied to on-site concrete engineering testing.
- References:
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Last Update:
1900-01-01