Effect of nano carbon and fly ash on shrinkage and crack resistance of ultra-high performance concrete

  • Văn Viết Thiên Ân Khoa Vật liệu Xây dựng, Trường Đại học Xây dựng, 55 đường Giải Phóng, quận Hai Bà Trưng, Hà Nội, Việt Nam
  • Lê Đăng Hải Khoa Vật liệu Xây dựng, Trường Đại học Xây dựng, 55 đường Giải Phóng, quận Hai Bà Trưng, Hà Nội, Việt Nam

Abstract

The present study aims to evaluate the effects of fly ash and nano carbon on properties of ultra-high performance concrete (UHPC) such as workability, compressive strength, shrinkage, and crack resistance. Ring-Test method was used to measure the crack resistance of concrete samples. The results showed that increasing fly ash content in UHPC will result in higher flowability of concrete mixture and lowers shrinkage of UHPC. However, the maximum compressive strength at the age of 28d and crack resistance of UHPC can be possibly obtained by using 20\% to replace cement by volume. The addition of nano carbon enhances the 28d compressive strength and crack resistance of UHPC.The present study aims to evaluate the effects of fly ash and nano carbon on properties of ultra-high performance concrete (UHPC) such as workability, compressive strength, shrinkage, and crack resistance. Ring-Test method was used to measure the crack resistance of concrete samples. The results showed that increasing fly ash content in UHPC will result in higher flowability of concrete mixture and lowers shrinkage of UHPC. However, the maximum compressive strength at the age of 28d and crack resistance of UHPC can be possibly obtained by using 20\% to replace cement by volume. The addition of nano carbon enhances the 28d compressive strength and crack resistance of UHPC.

Keywords:

ultra-high performance concrete; fly ash; nano carbon; shrinkage; crack resistance.

Downloads

Download data is not yet available.
Published
31-05-2019
How to Cite
Ân, V. V. T., & Hải, L. Đăng. (2019). Effect of nano carbon and fly ash on shrinkage and crack resistance of ultra-high performance concrete. Tạp Chí Khoa Học Công Nghệ Xây Dựng (KHCNXD) - ĐHXD, 13(2V), 32-40. https://doi.org/10.31814/stce.nuce2019-13(2V)-04
Section
Research Papers