Title
High filler concrete using pulverized fuel ash: Chloride penetration and microstructure
Author
Valcke, S.L.A.
Polder, R.B.
Nijland, T.G.
Leegwater, G.A.
Visser, J.H.M.
Bigaj-Van Vliet, A.A.J.
Publication year
2010
Abstract
The strength of concrete is linked to the amount of cement used. In many applications, concrete has a considerably higher strength than designed and structurally required. Lowering cement contents, thus reducing strength, significantly reduces the ecological impact of any concrete in terms of raw materials use and CO 2 output. A lower cement content may be achieved by replacing cement using high amounts of filler (e.g., fly ash) and simultaneously lowering the total amount of cement + filler (powder). The question arises how the required durability of such High Filler (HiFi) concrete for a specific application should be achieved. In the current paper HiFi concrete is tested for chloride penetration, using rapid chloride migration and diffusion tests. Also the microstructure is investigated using polarization-and-fluorescence microscopy on both laboratory samples and samples from pilot projects. The results show possibilities and limitations of HiFi concrete for making a design for long service life.
Subject
Building Engineering & Civil Engineering
BM - Building Materials
TS - Technical Sciences
Materials
Built environment
To reference this document use:
http://resolver.tudelft.nl/uuid:a20b69b2-c5a2-42c5-a054-fbe209a07dcc
TNO identifier
460800
ISBN
9781450714907
Source
2nd International Conference on Sustainable Construction Materials and Technologies, 28 June 2010 through 30 June 2010, Ancona, 1231-1242
Document type
conference paper