Influence of Hydrated Lime Addition on the Self-Healing Capability of High-Volume Fly Ash Incorporated Cementitious Composites

AbstractThis paper comprehensively studies the influence of hydrated lime usage on the repeatability and pervasiveness of the self-healing mechanism in engineered cementitious composites (ECC) incorporating high-volume fly ash (HVFA). Repeatability of self-healing was evaluated by repeatedly preloading the specimens up to 70% of their original deformation capacities at the end of each specified cyclic wet/dry exposure. Resonant frequency (RF) and rapid chloride permeability tests (RCPT) were used to assess the extent of deterioration. Crack characteristics were also presented to account for the changes observed in cracks throughout the RF tests. To monitor the pervasiveness of self-healing, RF measurements were recorded from both the top and middle portions of the specimens. Experimental results strongly suggest that the self-healing mechanism in cementitious composites can be made far more repeatable and pervasive with the addition of hydrated lime to the HVFA-ECC mixtures; this can have a significant im...

[1]  Carolyn M. Dry,et al.  Three designs for the internal release of sealants, adhesives, and waterproofing chemicals into concrete to reduce permeability , 2000 .

[2]  H. Reinhardt,et al.  Permeability and self-healing of cracked concrete as a function of temperature and crack width , 2003 .

[3]  S. Antiohos,et al.  Influence of quicklime addition on the mechanical properties and hydration degree of blended cements containing different fly ashes , 2008 .

[4]  Victor C. Li,et al.  Engineered Cementitious Composites with High-Volume Fly Ash , 2007 .

[5]  En-Hua Yang,et al.  Use of High Volumes of Fly Ash to Improve ECC Mechanical Properties and Material Greenness , 2007 .

[6]  M. Arik,et al.  Combined Effect of Aggregate and Mineral Admixtures on the Tensile Ductility of ECC , 2012 .

[7]  S. Ghosh,et al.  Self-Healing Materials , 2008 .

[8]  Carola Edvardsen,et al.  Water Permeability and Autogenous Healing of Cracks in Concrete , 1999 .

[9]  S. Ghosh,et al.  Self‐Healing Materials: Fundamentals, Design Strategies, and Applications , 2009 .

[10]  S. Luding,et al.  Discrete element modeling of self-healing processes in damaged particulate materials , 2007 .

[11]  S. V. D. Zwaag.  Self healing materials : an alternative approach to 20 centuries of materials science , 2007 .

[12]  G. Muyzer,et al.  Application of bacteria as self-healing agent for the development of sustainable concrete , 2010 .

[13]  Victor C. Li,et al.  Durability properties of micro-cracked ECC containing high volumes fly ash , 2009 .

[14]  Zheng-wu Jiang,et al.  Internal Relative Humidity Distribution in High-Performance Cement Paste Due to Moisture Diffusion and Self-Desiccation , 2006 .

[15]  John S. Popovics,et al.  EXTENT OF HEALING OF CRACKED NORMAL STRENGTH CONCRETE. TECHNICAL NOTE , 2000 .

[16]  Victor C. Li,et al.  Engineered Cementitious Composites , 2010, Learning and Analytics in Intelligent Systems.

[17]  C A Clear,et al.  THE EFFECTS OF AUTOGENOUS HEALING UPON THE LEAKAGE OF WATER THROUGH CRACKS IN CONCRETE , 1985 .

[18]  Henk M. Jonkers,et al.  Bacteria-based self-healing concrete , 2011 .

[19]  Ns Pandian,et al.  Permeability and consolidation behavior of fly ashes , 1999 .

[20]  M. Arik,et al.  Combined Effect of Aggregate and Mineral Admixtures on Tensile Ductility of Engineered Cementitious Composites , 2012 .

[21]  Victor C. Li,et al.  De-icing Salt Scaling Resistance of Mechanically Loaded Engineered Cementitious Composites , 2007 .

[22]  Yun Mook Lim,et al.  Feasibility study of a passive smart self-healing cementitious composite , 1998 .

[23]  Mustafa Sahmaran,et al.  Self-healing capability of cementitious composites incorporating different supplementary cementitious materials , 2013 .

[24]  Victor C. Li,et al.  Robust Self-Healing Concrete for Sustainable Infrastructure , 2012 .

[25]  Salim Barbhuiya,et al.  Properties of fly ash concrete modified with hydrated lime and silica fume , 2009 .

[26]  Tomoya Nishiwaki,et al.  Development of Self-Healing System for Concrete with Selective Heating around Crack , 2006 .

[27]  Toshiharu Kishi,et al.  Crack Self-healing Behavior of Cementitious Composites Incorporating Various Mineral Admixtures , 2010 .

[28]  Michael D.A. Thomas,et al.  The effects of fly ash composition on the chemistry of pore solution in hydrated cement pastes , 1999 .