Welcome to visit us!
Online services
2019-11-6EFFECTS OF DEICERS ON CONCRETE DETERIORATION By David Darwin JoAnn Browning Lien Gong Sean R. Hughes A Report on Research Sponsored by the and Materials Laboratory University of Kansas Structural Engineering and Materials Laboratory SL Report 07-3 December 2007 THE UNIVERSITY OF KANSAS CENTER FOR RESEARCH INC
2012-6-20YANG Quan-bingYANG Qian-rong.Effects of Salt-crystalliation of Sodium Sulfate on Deterioration of ConcreteJ.Journal of the Chinese Ceramic Society2007357877-885. 11.J.2007104392-396
2019-4-8JOINt DeterIOrAtION IN CONCrete PAvemeNtS 13 joints before sealing could also contribute to joint deterioration problem. The material properties of effects of deicers on concrete deterioration conclude that calcium chloride is the most aggressive deicer followed by magnesium chloride and sodium chloride Jain Janus Olek Jowiak
2013-3-22properties of concrete will review the recently completed laboratory study on the effects of magnesium and calcium chlorides on the properties of concrete Part 2 J. Weiss will review the impact of fluid transport on pavement joint deterioration and will discuss the issues related to applicability of accelerated tests to field conditions
2008-5-16The Deleterious Chemical Effects of Concentrated Deicing Solutions on Portland Cement Concrete Guidelines - 3 - Concrete Deterioration in the Presence of Deicing Chemicals There are two general forms of deterioration that can occur when concrete is exposed to high concentrations of chloride-based deicing chemicals
2013-10-30Deleterious Chemical Effects of Deicing Solutions on Concrete Pavements NOVEMBER 2010 Deterioration of the concrete specimens resembled that seen for the mortar specimens gures 7-8. In all cases the cubes exposed to different deicers. by deicing chemicals concrete mixtures containing 15 Class F y ash were next best and
The results of a study conducted in the mid-1950s show that its not high concentrations of deicers that cause the heaviest scaling but relatively low amounts in the range of 2 to 4. In the study non-air-entrained concrete was tested after exposure to 25 freee-thaw cycles and air-entrained concrete was tested after exposure to 50 and 200
2019-1-15Agencies should be aware of the deleterious effects magnesium chloride deicers can pose on the concrete strength even though the inhibited magnesium chloride deicers can pose less corrosion risk for steel in concrete relative to sodium-chloride-based deicers with or without inhibitor
2013-5-30Concrete Deterioration Reinforced concrete is a very versatile construction material. Properly designed concrete structures are both strong and durable. However concrete structures are vulnerable to a number of factors that can cause deterioration. Deterioration can result in
2020-5-21Types and Causes of Concrete Deterioration The exceptional durability of portland cement concrete is a major reason why it is the worlds most widely used construction material. But material limitations design and construction practices and severe exposure conditions can cause concrete to deteriorate which may result in aesthetic
2018-11-14THE EFFECTS OF CALCIUM MAGNESIUM ACETATE DEICERS ON PORTLAND CEMENT MORTAR BARS A Thesis Presented to the Graduate School of Clemson University In Partial Fulfillment of the Requirements for the Degree Master of Science Civil Engineering by Jeffrey M. Davis December 2006 Accepted by Prasad Rangaraju Committee Chair Serji Amirkhanian Brad Putman
Chemical Damage to Concrete. Despite what is often advertised most deicers do chemical damage to concrete. All salts including calcium chloride sodium chloride ammonium nitrate and even magnesium chloride do chemical damage123
2015-7-27The Deleterious Chemical Effects of Concentrated Deicing Solutions on Portland Cement Concrete Larry Sutter Professor and Director Michigan Tech Transportation Institute Director University Transportation Center for Materials in Sustainable Transportation Infrastructure Michigan Tech and the U.P. Largest undergraduate Civil and Environmental
The deleterious effects of deicers on concrete pavements and bridges have concerned concrete researchers for several decades. The present study experimentally investigates the effects of different
Effects of Deicers on Concrete Deterioration. For periods of up to 95 weeks concrete specimens were exposed to weekly wetting and drying cycles in either distilled water or in solutions of sodium chloride NaCl calcium chloride CaCl sub 2 magnesium chloride MgCl sub 2 and calcium magnesium acetate CMA with either a 1.06 molal ion concentration equivalent in iron concentration to a 3
2018-7-18Evaluation of the Effects of Deicers on Concrete Durability Author WisDOT Research Library Unit Subject 0092-17-03 2018. This research brief summaries the WHRP project Evaluation of the Effects of Deicers on Concrete Durability. Keywords
2018-12-10Salt solutions are used on pavement surfaces during wintry weather events to ensure safe driving conditions. In addition to sodium chloride NaCl which continues to be traditionally used as a deicer solutions of calcium chloride CaCl 2 and magnesium chloride MgCl 2 are being increasingly used to provide a more consistent ice and snow control and thus ensure safe driving
Such risks of deicers on the durability of Portland cement concrete PCC structures and pavements exist through three main pathways 1 physical deterioration of the concrete through such effects as salt scaling 2 chemical reactions between deicers and cement paste a cation-oriented process especially in the presence of Mg 2 and Ca 2
According to this model magnesium from any source either from reacting dolomite or from magnesium road deicers has a major role in highway concrete deterioration. Consequently magnesium deicers should be used with caution and long-term testing of the effects of magnesium deicers on highway concrete should be implemented to determine their
2014-9-19dolomite or from magnesium road deicers has a major role in highway concrete deterioration. Consequently magnesium deicers should be used with caution and long term testing of the effects of magnesium deicers on highway concrete should be implemented to determine their effects
2016-3-16The main objective of this investigation was to evaluate the relative destructive effects of various deicers on the asphalt concrete pavement. First the effect of these types of deicers was assessed for the aggregate materials then its destructive effect on the asphalt concrete
2018-6-1Chemical Deicers and Concrete Pavement Impacts and Mitigation In the last decade concerns have been raised regarding the potential for deleterious effects of certain chemical deicers most notably MgCl. 2. and CaCl. 2 on concrete. Chemical deicers based on MgCl. 2. and CaCl. 2. are becoming increasingly popular due to their relatively low
Concrete specimens were exposed to weekly cycles of wetting and drying in distilled water and in solutions of sodium chloride calcium chloride magnesium chloride and calcium magnesium acetate with either a 6.04 molal ion concentration equivalent in ion concentration to a 15 solution of NaCl or a 1.06 molal ion concentration equivalent in ion concentration to a 3 solution of NaCl for
The physical effects of deicers on concrete are mainly manifested in increased damage from freee-thaw cycling while the chemical effects include detrimental reactions between the deicers and the cement paste aggravation of expansive aggregate-cement reactions
Effects of deicers typestemperature and soak time on the asphalt mixture with AH-70 and SBS modified asphalt are studied.The results indicate that the deicers can increase the tension strength.But the fracture energy of asphalt mixture decreased.The intension
Copyright © 2020.Henan Roboco Heavy Machinery Co., Ltd. All rights reserved.