DOI: 10.11799/ce201707012
Application of high-strength-low-heat concrete in main shaft freezingsection of Zhaogu No.2 Mine
YAN Shao-yang
JIAO Hua-zhe
CHEN Xin-ming
ZHAO Lu
LIU Zi-lu
HAN Zhen-yu
Abstract：The paper took the application of C40~C80 high strength concrete with low freezing section in Zhaogu No.2 Mine shaft as the background,cement,sand,gravel,fly ash,slag and chemical admixtures were mixed in different ratio,to prepare early strength crack compacting high performance concrete with low hydration heat and different strength,the actual strength of which was 5% greater than design.It improves the strength reserve of the shaft wall,effectively prevents the shaft wall destruction.As the hydration heat reduces 15~17℃,the inner and outer wall mass concrete temperature crack expansion is well controlled,ensuring the construction safety of freezing section.
Keywords：shaft constructionhigh-strength-low-heat concretealluviumfreezing section
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 41-44 )