Use of Limestone Fines to Reduce Permeability of Concrete for Durability Improvement

Traditionally, the use of limestone fines (LF) in concrete is to replace either part of the cement or part of the fine aggregate, notwithstanding this, the authors are advocating that the LF should be better used as cement paste replacement, which is expected to improve the durability and sustainability of concrete at the same time. To verify this new strategy of using LF, 9 nos. concrete mixes of the same powder paste volume ratio and variable LF contents and W/C ratios were produced for permeability and strength measurement. The results proved that the strategy of using LF to partially replace cement paste could effectively decrease the permeability and increase the strength at the same W/C ratio. Furthermore, even when the W/C ratio is allowed to slightly increase while keeping the concrete at the same strength, the permeability can also be significantly reduced for better durability by using LF as cement paste replacement.

[1]  Ali A. Aliabdo,et al.  Impact of organic carbon on hardened properties and durability of limestone cement concrete , 2016 .

[2]  Glykeria Kakali,et al.  The permeability of Portland limestone cement concrete , 2003 .

[3]  Abd Elmoaty M. Abd Elmoaty,et al.  Long term study of mechanical properties, durability and environmental impact of limestone cement concrete , 2016 .

[4]  Galal Fares,et al.  Effect of slump cone orientation on the slump flow time (T50) and stability of sustainable self-compacting concrete containing limestone filler , 2015 .

[5]  D. Bentz,et al.  Limestone Fillers Conserve Cement; Part 2: Durability issues and the effects of limestone fineness on mixtures , 2009 .

[6]  L. G. Li,et al.  Adding limestone fines as cementitious paste replacement to improve tensile strength, stiffness and durability of concrete , 2015 .

[7]  H. Houari,et al.  BEHAVIOUR OF LIMESTONE SAND BASED CONCRETE WITH VARIABLE FILLER CONTENT , 2002 .

[8]  T. Okamoto,et al.  The effects of limestone aggregate on concrete properties , 2010 .

[9]  G. D. Schutter,et al.  Cement Hydration In The Presence Of High Filler Contents , 2005 .

[10]  Jamal M. Khatib,et al.  Strength and durability of concrete incorporating crushed limestone sand , 2009 .

[11]  S. Esterby.  American Society for Testing and Materials , 2006 .

[12]  V. S. Ramachandran,et al.  Handbook of Analytical Techniques in Concrete Science and Technology: Principles, Techniques and Applications , 2000 .

[13]  D. Bentz,et al.  Limestone Fillers Conserve Cement; Part 1: An analysis based on Powers’ model , 2009 .