Abstract
Tensile creep of concrete at early ages is one of the important factors that affect the stress of restrained and partly restrained concrete. But only few data are available on tensile creep of concrete. The effect of ground slag on tensile creep was studied using lever-type tensile creep tester. Early age tensile basic creep of concrete loaded at the age of 3 days was researched. Results show that concrete exhibits large creep deformation when loaded at the age of 3 days. And the addition of ground slag decreases the early age tensile creep of concrete and tensile creep of concrete decreases with the increase of the content of ground slag. But the basic rule of the development of basic tensile creep in concrete has not been changed.
Highlights
Ground slag is obtained from ground melt generated in blast furnace iron making
The splitting tensile strength of concrete with different ground slag content at the age of 3 days is shown in Fig. (2)
As can be seen from Fig. (2), the strength of mix A〜D at the age of 3 days is less than that of reference concrete. This is because the activity of ground slag is less than that of cement, so the initial reaction rate of concrete mixed with ground slag is less than reference concrete, and the splitting tensile strength of concrete gradually decreases with the increase in the mixing amount of ground slag at the age of 3 days
Summary
Ground slag is obtained from ground melt generated in blast furnace iron making. It contains chemical components such as SiO2, CaO, Al2O3, Fe2O3 and MnO with higher activity, which can react with cement hydration product of. With the development of concrete towards high strength and high performance, larger autogenous shrinkage will occur at early age. The deformation capacity of tensile creep must be studied so as to analyze the cracking sensitivity of early-age concrete. The current research on the effect of ground slag on tensile creep of early-age concrete is less and imperfect. This paper will mainly research on the effect of ground slag on tensile creep of concrete at early age
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Open Construction and Building Technology Journal
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
