tests and criteria for concrete resistant to chloride ion

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Tests and Criteria for Concrete Resistant to Chloride Ion ...

Stanish et al. (1997) discuss the mechanisms of chloride TItle No. 113-M56 Tests and Criteria for Concrete Resistant to Chloride Ion Penetration by Karthik H. Obla, Colin L. Lobo, and Haejin Kim ACI Materials Journal, V. 113, No. 5, September-October 2016. MS No. M-2015-254.R1, doi: 10.14359/51689107, received January 21, 2016, and

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Tests And Criteria For Concrete Resistant To Chloride Ion ...

permeability test (RCPT). Measured apparent chloride diffusion coefficients were correlated with results of rapid index test methods that provide an indication of the characteristics of concrete. A set of rapid chloride test methods and specification criteria that can reliably classify mixtures based on their resistance to chloride ion ...

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Sep 01, 2016  Rapid index test methods included were rapid chloride permeability, rapid migration, conductivity, absorption, and initial and secondary sorptivity. A set of rapid index test methods and specification criteria that can reliably classify mixtures based on their resistance to chloride ion penetration are proposed.

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Performance Criteria for Concrete Resistant to Chloride ...

% of all cases that meet criteria for very low chloride penetration 24.4 % of cases that meet criteria but not expected to give very low chloride Dalevel 8.1 0.50SL25SF5, 0.60SL25SF5, 0.40SL25-I, 0.40FA15-I, 0.5SL35-II, 0.60 SL50-V1 If only56 day moist cure is allowed only 0.50SL25SF5 mixture met the strength/RCPT criteria for very low chloride

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Sep 01, 2019  The efficacy of using both approaches to categorize 44 concrete mixtures prepared from different portland cements, types and dosages of supplementary cementitious materials, and w/cm is examined. It is found that either approach can be used to categorize mixtures based on their resistance to chloride ion penetration.

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Note 1: This test method can produce misleading results when calcium nitrite has been admixed into a concrete. The results from this test on some such concretes indicate lower resistivity values, that is, lower resistance to chloride ion penetration, than from tests on identical concrete mixtures (controls) without calcium nitrite were at least ...

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SURFACE RESISTIVITY INDICATION OF CONCRETE’S ABILITY

Note 1: This test method can produce misleading results when calcium nitrite has been admixed into a concrete. The results from this test on some such concretes indicate lower resistivity values, that is, lower resistance to chloride ion penetration, than from tests on identical concrete mixtures (controls) without calcium nitrite were at least ...

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Test Methods of Concrete Resistance to Chloride Ingress ...

Corrosion of concrete is caused by expansive products obtained in the reaction of chloride ions with components of concrete and mainly Ca(OH) 2 , e.g. expansive alkaline calcium chloride Ca(OH) 2 ...

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Standard Test Method for Electrical Indication of Concrete ...

4.1 This test method covers the laboratory evaluation of the electrical conductance of concrete samples to provide a rapid indication of their resistance to chloride ion penetration. In most cases the electrical conductance results have shown good correlation with chloride ponding tests, such as AASHTO T259, on companion slabs cast from the same concrete mixtures (Refs 1-5).

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Standard Test Method for Electrical Indication of Concrete ...

test on some such concretes indicate low resistance to chloride ion penetration, while 90-day chloride ponding tests on com-panion slabs show a higher resistance. 4.8 The details of the test method apply to 4-in. (102-mm) nominal diameter specimens. This includes specimens with actual diameters ranging from 3.75 in. (95 mm) to 4.0 in. (102

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TESTING THE CHLORIDE PENETRATION RESISTANCE OF CONCRETE

The ability of chloride ions to penetrate concrete must be known for design as well as quality control purposes. This document reviews the current common methods for determining chloride penetrability of concrete. First, some theoretical background of what influences the penetration of chlorides into concrete is presented. The different mechanisms of chloride penetration are presented ...

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T 358-15 - Surface Resistivity Indication of Concrete s ...

Concrete’s Ability to Resist Chloride Ion Penetration AASHTO Designation: T 358-151 1. SCOPE 1.1. This test method covers the determination of the electrical resistivity of water-saturated concrete to provide a rapid indication of its resistance to the penetration of chloride ions. This test method

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Improving the Reliability of Resistivity Tests of Concrete

correlation between apparent chloride diffusion coefficient, determined in accordance with ASTM C1556, and the results from ASTM C1202, Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration (RCPT). However, the RCPT result, like all electrical tests , is impacted by the pore solution conductivity .

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Chloride Resistance of Concrete

6 Chloride Resistance of Concrete Figure 3.2 Variation of porosity with depth of concrete slabs cured using different methods (Gowripalan et al 5) The porosity or permeability of insitu concrete is highly dependent on the degrees of compaction and curing during placing and the early life of concrete

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Mechanical properties and resistance to chloride ion ...

Nov 30, 2017  Rahman et al. found that rice husk ash could improve the anti-chloride ion permeability and mechanical properties of epoxy resin mortar and epoxy resin concrete . The inorganic fillers could not only improve the resistance to chloride ion permeability of epoxy emulsion cement mortar, but also benefit for mechanical properties.

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Types and Causes of Concrete Deterioration

concrete to chloride ions is the primary cause of premature corrosion of steel reinforcement. The intrusion of chloride ions, present in deicing salts and seawater, into reinforced concrete can cause steel corrosion if oxygen and moisture are also available to sustain the reaction (Fig. 4). Chlorides dissolved in water can permeate

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Condition Assessment Testing of concrete in laboratory ...

When you apply 60 volt, essentially what happens is, it drives the chloride ions from the left side to the right side as in the picture. The negatively charged ions in the left side cell, which is the chloride ions, it moves or gets transported into the concrete, based on that

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Coating Concrete: Performance ... - Laboratory Testing

Dec 28, 2018  Protective coatings enhance the durability of concrete structures by providing resistance to penetration of chloride ions into the concrete matrix. This property is tested through saline ponding (3% chloride solution) of concrete slabs for 90 days and measuring chloride ingress at four depths, as shown in Figure 1.

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AASHTO T 259 : Standard Method of Test for Resistance of ...

AASHTO T 259, 2002 Edition, 2002 - Standard Method of Test for Resistance of Concrete to Chloride Ion Penetration This method covers the determination of the resistance of concrete specimens to the penetration of chloride ion. It is intended for use in determining the effects of variations in the properties of concrete on the resistance of the concrete to chloride ion penetration.

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SULPHATE ATTACK AND CHLORIDE ION PENETRATION:

From ASTM (Ref 9) was developed a rapid chloride permeability test with an electric charge being used to accelerate chloride ion penetration through a thin section of concrete. The American Association of State Highway and Transportation Officials (AASHTO) (Ref 10) developed the other approach. This involves a chloride ponding test of much ...

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T 358-15 - Surface Resistivity Indication of Concrete s ...

Concrete’s Ability to Resist Chloride Ion Penetration AASHTO Designation: T 358-151 1. SCOPE 1.1. This test method covers the determination of the electrical resistivity of water-saturated concrete to provide a rapid indication of its resistance to the penetration of chloride ions. This test method

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Criteria for rapid set concrete patch materials Mass.gov

RAPID SET CONCRETE PATCH MATERIALS APPROVAL PROCESS ... Resistance to Freeze Thaw (Applies to 3. rd. Party Independent Testing) Freeze Thaw Mass Loss 300 cycles . ≤ 6% T 161/ C 666 (Procedure A) Durability Factor ≥ 90% Chloride Ion Penetration 28 days ≤ 2000 Coulombs T 277/ C 1202 * As modified by ASTM C928. Author: dwood Created Date:

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Water absorption, permeability, and resistance to chloride ...

Jan 01, 2011  Resistance of concrete to chloride-ion penetrationResistance of the concrete to chloride-ion penetration was evaluated by the following three methods. 2.3.3.1. Rapid chloride penetrability test (RCPT)The test was carried out at 28 days according to ASTM C

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CS1 : 2010 Testing Concrete and Quality Scheme for the ...

Durability Tests in CS1:2010 (1) Determination of depth of penetration of water under pressure; (2) Determination of concrete’s ability to resist chloride ion penetration; (3) Determination of alkali silica reaction potential by ultra-accelerated mortar bar test; and (4) Determination of alkali silica reaction potential by concrete prism test.

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Prediction of the Chloride Resistance of Concrete Modified ...

The aim of the study was to generate rules for the prediction of the chloride resistance of concrete modified with high calcium fly ash using machine learning methods. The rapid chloride permeability test, according to the Nordtest Method Build 492, was used for determining the chloride ions’ penetration in concrete containing high calcium fly ash (HCFA) for partial replacement of Portland ...

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SULPHATE ATTACK AND CHLORIDE ION PENETRATION:

From ASTM (Ref 9) was developed a rapid chloride permeability test with an electric charge being used to accelerate chloride ion penetration through a thin section of concrete. The American Association of State Highway and Transportation Officials (AASHTO) (Ref 10) developed the other approach. This involves a chloride ponding test of much ...

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A comparison of methods to assess the resistance of ...

Jul 16, 2021  The critical chloride content C crit is an indicator for the corrosion resistance of reinforcing steels in concrete. In this article, several experimental methods for determining the critical chloride content C crit of mild and an alloyed (12% Cr) steel in cementitious materials are compared. The methods used include accelerated polarization tests and tests using more natural (unpolarized ...

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Coating Concrete: Performance ... - Laboratory Testing

Dec 28, 2018  Protective coatings enhance the durability of concrete structures by providing resistance to penetration of chloride ions into the concrete matrix. This property is tested through saline ponding (3% chloride solution) of concrete slabs for 90 days and measuring chloride ingress at four depths, as shown in Figure 1.

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Chloride in concrete (BS 8500)

Chloride in concrete (BS 8500) BS 8500 Concrete – Complementary British Standard to BS EN 206 requires that concrete should have a maximum chloride ion content by mass of cement depending on certain criteria. This is expressed as a chloride class e.g. Cl 0,40 The use of a comma , instead of a full stop . is how it is expressed in the main Standard BS EN 206.

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Condition Assessment Testing of concrete in laboratory ...

When you apply 60 volt, essentially what happens is, it drives the chloride ions from the left side to the right side as in the picture. The negatively charged ions in the left side cell, which is the chloride ions, it moves or gets transported into the concrete, based on that

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(PDF) Electrical Resistivity of Concrete

criteria required for the durability-based quality control of . ... “Method of Test for Resistance of Concrete to . ... concrete with chloride ions had a comparatively lower resistivity ...

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RES2013-18

which were directed toward evaluating the quality of concrete being placed on Tennessee bridge decks in terms of the ability of the concrete to resist the penetration of chloride ions. This resistance was measured by the conventional method known as the Rapid Chloride Ion Penetration Test (RCP Test) and the newer Surface Resistivity Test (SR Test).

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FINAL REPORT Application of Sealing Agents in Concrete ...

FIGURE 17. Sampling and Testing for Chloride Ion Penetration in Concrete and Concrete Raw Materials: AASHTO T 260-97 Standards. FIGURE 18a. Sealer Aided Resistance of Concrete to Chloride Ion Penetration at 0.5 Inch Depth. FIGURE 18b. Sealer Aided Resistance of Concrete to Chloride Ion Penetration at 1.0 Inch Depth. FIGURE 19.

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Evaluation of Corrosion Resistance of Different Steel ...

EVALUATION OF CORROSION RESISTANCE OF DIFFERENT STEEL REINFORCEMENT TYPES Final Report May 2006 Co-Principal Investigators Terry J. Wipf Professor of Civil Engineering, Iowa State University Director of the Bridge Engineering Center, Center for Transportation Research and Education

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