Partner: Jitendra Jain |
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Recent publications
1. | Jain J.♦, Janusz A.♦, Olek J.♦, Jóźwiak-Niedźwiedzka D., Effects of Deicing Salt Solutions on Physical Properties of Pavement Concretes, TRANSPORTATION RESEARCH RECORD, ISSN: 0361-1981, DOI: 10.3141/2290-09, Vol.2290, pp.69-75, 2012 Abstract: Salt solutions are used on pavement surfaces during wintry weather events to guarantee safe driving conditions. In addition to sodium chloride (NaCl) which continues to be traditionally used as deicer, the usage of solutions of calcium chloride (CaCl2) and magnesium chloride (MgCl2) is on the increase due to need provide a more consistent ice and snow control and thus ensure safety of the travelling public. This paper assesses the effects of three different salt solutions (NaCl, CaCl2, and MgCl2) on several physical and mechanical properties of pavement concretes. These deicing solutions were used under simulated wetting-drying (WD) and freezing-thawing (FT) exposure regimes with total ion concentration of the deicers was 10.5 molal for WD exposure and 5.5 molal for FT exposure. Deicing Salt Solutions, Pavement Concretes Affiliations:
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Conference papers
1. | Jain J.♦, Olek J.♦, Janusz A.♦, Jóźwiak-Niedźwiedzka D., Effects of Salt Solutions on Physical Parameters of Pavement Concretes, 91st Annual Meeting, Transportation Research Board, 2012-01-22/01-26, Washington (US), No.2735-12, pp.1-13, 2012 Abstract: Salt solutions are employed on pavement surfaces throughout wintry weather environment to guarantee safe driving conditions. Recently, deicing solutions of CaCl2 or MgCl2 (or sometimes rock salt (NaCl) pretreated with CaCl2 or MgCl2 brines,) are used to provide a more consistent ice and snow control. This paper assesses the effects of more prevalently used salt solutions on the microstructure and physical parameters (strength, expansion and mass) of pavement concretes. Deicing solutions of NaCl, CaCl2, and MgCl2 were used for wetting-drying (WD) and freezing-thawing (FT) conditions with total ion molality of 10.5 and 5.5 respectively. Physical Parameters, Pavement Concretes, Salt Solutions Affiliations:
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2. | Jain J.♦, Janusz A.♦, Olek J.♦, Jóźwiak-Niedźwiedzka D., Physico-chemical Changes in Plain and Fly Ash Modified Concretes Exposed to Different Deicing Chemicals, XIII ICCC, 13th International Congress on the Chemistry of Cement, 2011-07-03/07-08, Madrid (ES), pp.1-7, 2011 Abstract: The deicing/anti-icing chemicals are routinely used during cold weather to ensure safe driving conditions. Traditionally, solid rock salt (NaCl) or NaCl brines have been used for these purposes but their efficiency is reduced at lower temperatures. In order to provide a more reliable means of ice and snow control, chemicals with lower freezing points, such as CaCl2 or MgCl2 (or sometimes rock salts pretreated with CaCl2 or MgCl2 brines) are increasingly being applied. The extent and magnitude of chemical reactions of these “new-generation” deicers with pavement concrete is still somewhat unclear. This paper presents the results of investigation of the physicochemical changes in the microstructure of pavement concrete exposed to different deicers and subjected to both wetting/drying (W/D) and freezing/thawing (F/T) regimes. plain concrete, fly ash concrete, deicing salts, pavement concrete Affiliations:
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