Effects of Wood Ash on Properties of Concrete and Flowable Fill - Journal of Materials Science and Chemical Engineering

MSCE > Vol.4 No.7, July 2016

Effects of Wood Ash on Properties of Concrete and Flowable Fill ()

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Download as PDF (Size: 512KB) PP. 101-114

DOI: 10.4236/msce.2016.47013 2,672 Downloads 14,796 Views Citations

Author(s)

Zhifu Yang, Jon Huddleston, Heather Brown

Affiliation(s)

Department of Concrete Industry Management, Middle Tennessee State University, Murfreesboro, TN, USA.

ABSTRACT

This research investigated the use of wood ash to partially replace cement or sand in conventional concrete, roller compacted concrete (RCC), and flowable fill. The main focus was to determine how the wood ash addition affected the main fresh and hardened properties of these materials. It was found that the wood ash could be successfully incorporated into the conventional concrete. In particular, the wood ash addition not only accelerated the setting, but also improved the early and the 28-day compressive strength of concrete that contained the blast furnace slag. It was also observed that the wood ash could be positively added into RCC to facilitate the compaction and reduce the risk of segregation. In addition, the wood ash can be beneficially introduced into the flowable fill mixtures to facilitate flow, to alleviate bleeding and subsidence, as well as to achieve controlled strength especially when combined with the class C or the class F fly ash.

KEYWORDS

Wood Ash, Conventional Concrete, Roller Compacted Concrete, Flowable Fill, Setting, Workability, Compressive Strength

Share and Cite:

Yang, Z. , Huddleston, J. and Brown, H. (2016) Effects of Wood Ash on Properties of Concrete and Flowable Fill. Journal of Materials Science and Chemical Engineering, 4, 101-114. doi: 10.4236/msce.2016.47013.

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