tests and criteria for concrete resistant to chloride ion

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

Jun 09, 2020  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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Tests and Criteria for Concrete Resistant to Chloride Ion ...

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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Performance Criteria for Concrete Resistant to Chloride ...

Sep 01, 2019  Based on that research, a combination of RCPT and strength criteria was proposed to categorize mixtures based on their resistance to chloride ion penetration. This article proposes specification criteria based on a formation factor to categorize mixtures. The efficacy of using both approaches to categorize 44 concrete mixtures prepared from ...

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When to Test for Chloride Ion? - Concrete Construction

Apr 01, 1988  A. Building Code Requirements for Reinforced Concrete" (ACI 318-83) sets limits on water-soluble chloride ion content as a precaution against possible corrosion of reinforcing steel. The 0.15 percent limit called for by your specification applies to reinforced concrete exposed to chlorides during its service life.

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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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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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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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ACCEPTABLE CHLORIDE ION LIMIT IN CONCRETE

total chloride ion content by the weight of cementitious materials determined by acid-soluble method was preferred as the representation of chloride content in concrete. 17.Key Words Acceptable Chloride Limit, Chloride Threshold, Corrosion, Linear Polarization Resistance, Acid-Soluble Chloride, Water-Soluble Chloride, Chloride Binding 18.

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Comparison of Two Methods to Assess the Resistance of ...

Apr 04, 2014  The industry standard currently accepted method for assessing the resistance of concrete to penetration of chloride ions is commonly known as the rapid chloride permeability (RCP) test. The test is time-consuming and laborious and the user must be extremely careful to ensure accuracy, making it problematic for inclusion as a performance ...

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

Jan 01, 2002  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. Variations in the concrete may include, but are not limited to, changes in the cement type and content, water/cement ratio, aggregate type and proportions, admixtures, treatments, curing ...

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Evolving Acceptance Criteria for Concrete Durability Tests ...

Transport and. Highways. Tests and standards of acceptance: cube c ompressive strength, chloride and sulphate content, density of fresh concrete and. hardened concrete, permeability tests. Water ...

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Research Articles - NRMCA

Concrete International, ACI, V. 39, No. 1, 2017 “Criteria for Freeze-Thaw Resistant Concrete Mixtures” Advanced Civil Engineering Materials, V. 5, No. 2, 2016 “Tests and Criteria for Concrete Resistant to Chloride Ion Penetration” ACI Materials Journal, V. 113, No. 5, Sep-Oct 2016; Publications by Staff in Journals/Magazines

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ASTM C1556 - Beton Consulting Engineers

ASTM C1556: Bulk Chloride Diffusion (Diffusion Coefficient) . ASTM C1556 is a respected method for determining the bulk diffusion coefficient of concrete. We’ve performed this test hundreds of times, both for research and for developing concrete that is resistant to chloride ion penetration.

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ASTM-C1202 Standard Test Method for Electrical ...

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 ...

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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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Testing the Chloride Penetration Resistance of Concrete: A ...

The ability of chloride ions to penetrate the concrete must then be known for design as well as quality control purposes. The penetration of the concrete by chloride ions, however, is a slow process. It cannot be determined directly in a time frame that would be useful as a quality control measure.

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When to Test for Chloride Ion? - Concrete Construction

Apr 01, 1988  A. Building Code Requirements for Reinforced Concrete" (ACI 318-83) sets limits on water-soluble chloride ion content as a precaution against possible corrosion of reinforcing steel. The 0.15 percent limit called for by your specification applies to reinforced concrete exposed to chlorides during its service life.

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Prediction of the Chloride Resistance of Concrete Modified ...

Dec 11, 2015  magnitude, the temperature of the anolyte measured at the beginning and the end of test and the depth of chloride ions’ penetration. The criteria for evaluating the resistance of concrete against chloride penetration proposed by L. Tang [21] are shown in Table3. Table 1.

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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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Corrosion Resistance of Concrete - PCA

With regards to corrosion resistance, the specifier indicates the method of curing and duration of aging of test specimens and the maximum charge allowed using ASTM C1202 (AASHTO T 277), Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration. The resistance to chloride ion penetration is used ...

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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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Concrete Durability: Review of Rapid Chloride Permeability ...

the concrete. 2.3 Chloride Ion Resistance Testing 2.3.1 Background Steel in concrete is normally stable due to the formation of a passive iron oxide film on the steel surface. Corrosion initiation due to the presence of chloride ions is thought to be the primary mechanism leading

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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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Electrical Resistivity of Concrete

voltage. While it does provide an indication of the concrete’s ability to resist chloride ion penetration, the RCP method is neither rapid nor capable of direct measurement of chloride permeability. Rather, the test was developed by correlating a measured charge to the total chloride penetrating to a depth of

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ASTM-C1202 Standard Test Method for Electrical ...

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 ...

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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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Performance-based criteria to assess the suitability of ...

Oct 22, 2018  10%  The ASTM C1556 standard diffusion test (or its equivalent NT Build 443) is often considered as the most accurate method to assess the resistance of concrete against chloride ion penetration. However, the chloride diffusion test takes around 6 weeks to complete (saline solution exposure, grinding and titration) and is a labour intensive process.

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ASTM C1202-2017a 混凝土抗氯离子渗透能力的电指示的标准试验

ASTM C1202-2017a, 4.1x00a0;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

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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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