E3S Web Conf.
Volume 283, 20212021 3rd International Conference on Civil, Architecture and Urban Engineering (ICCAUE 2021)
|Number of page(s)||5|
|Section||Research on Civil Engineering and Geotechnical Hydrological Structure|
|Published online||07 July 2021|
Application of hydration heat inhibitor in crack control of mass concrete of tunnel side wall
1 China University of Mining and Technology-Beijing, School of mechanics and civil engineering, Beijing, China
2 CCCC Tianjin Harbor Engineering Research Institute Co., Ltd., Tianjin, China
The structural deformation caused by temperature change is the main reason for cracking of mass concrete. In order to avoid or reduce the crack of the side wall of cast-in-place mass concrete in tunnel, the effects of different dosage of hydration heat inhibitor on the internal temperature rise curve of concrete, strength and the properties of the mixture are analyzed through experimental research, and the optimal dosage of 1% of cementing material is finally determined. The engineering application results show that after adding hydration heat inhibitor to the tunnel side wall concrete, the maximum temperature rise in the tunnel side wall is obviously reduced, and the arrival time of the temperature peak is delayed. No cracks appear in the tunnel side wall, and the crack control effect is good.
© The Authors, published by EDP Sciences, 2021
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