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chloride content of fresh concrete

chloride content of fresh concrete

Chloride Content of Fresh Concrete - cdn.ymaws

2019-4-22  The chloride content of fresh concrete is calculated by adding together the amounts of acid soluble chloride contributed by each constituent by the formula shown on page 3.

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Concrete, fresh: Chloride content (NT BUILD 199) -

2020-9-1  This NORDTEST method specifies a method for the determination of the chloride content in fresh concrete, (see Note 1). The method is a reference method for other test used to determine the chlorides in fresh concrete, for instance, when there is reason to question the results obtained from other, simpler, methods about the suitability of the concrete.

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Determining Chloride Content of Concrete The

Determining Chloride Content of Concrete The water-soluble chloride ion content is limited by specifications in order to provide corrosion protection of the reinforcing steel. Limits for the chloride ion content are predicated upon the exposure conditions of the concrete

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Analysis of total chloride content in concrete -

2015-12-1  Theoretical and measured total chloride in the actual concrete mixtures: (A) water chloride content is 250 ppm, (B) water chloride content is 750 ppm, and (C) water chloride content is 1250 ppm. 5 .

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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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Analysis of total chloride content in concrete

2020-3-3  Total chloride content:is the total amount of chloride ion in a sample of concrete, including bound in the solid phases and free chlorides in the pore solution. Free chloride content:is the amount of chloride ion in the pore solution as obtained by squeezing con-crete samples at high pressures. Water soluble chloride content:is the amount of

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RCT and RCTW - GERMANN

2014-6-7  Measuring the chloride ion content of fresh concrete or its constituents Principle A powder sample of hardened concrete is obtained by drilling or grinding from the structure, or a sample is obtained from the fresh concrete. The sample is mixed into a distinct amount of extraction liquid and shaken for five minutes. The extraction liquid ...

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Chloride Content - an overview ScienceDirect Topics

Tests have shown (Concrete Society, 1998) that the threshold chloride content of concrete for corrosion of ferritic stainless steels is higher than for plain carbon steel. However, the susceptibility of ferritic stainless steels to corrosion with increasing chloride content suggests that, unless the level of chloride contamination can be contained below the threshold level (which has yet to be defined but is likely to

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Chlorides and concrete.

Chlorides have little effect on hardened concrete but they increase the risk of reinforcement corrosion. Corrosion of the reinforcement will be initiated when the chloride ion concentration at the steel reaches the so called ‘threshold level’. The subject of a safe level of chloride is somewhat controversial A fairly traditional view is ...

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Chloride limits in the ACI 318 ... - Concrete Construction

of chloride detected by the water-soluble test is usually about 50% to 75% of the total amount of chloride in concrete, depending on the nature of the ingredients and

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Determining Chloride Content of Concrete The

However if the calculated chloride ion content exceeds the prescribed limits then testing for the water-soluble chloride ion content per option (2) would be required at a test age of 28 to 42 days. ACI 318-19 also further clarified the method of calculating and reporting the chloride ion content of concrete.

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Chloride Content of Concrete - Atlantic Testing

2020-1-29  The most common source of chloride ions is deicing salts but they can also come from aggregates, mix water, accelerating admixtures, and even from adjacent soils. There are three commonly used test methods of chloride content determination of hardened concrete: ASTM C 1218 for determining water-soluble content; ASTM C 1152 for determining the ...

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Measuring chloride ion contents in new concrete: how to ...

2018-4-4  The chloride ion content of new concrete may be determined by testing the concrete, or by calculating the contribution of chlorides from the aggregates, admixtures and mix water used to make the concrete. NZS 3101 specifies methods of measuring the acid-soluble chloride ion content of new concrete.

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Chloride content and pH value in the pore solution of ...

2017-8-27  Chloride content and pH value in the pore solution of concrete under carbonation* ... the fresh mix on chloride content in the pore solution has been determined by ion chromatography. At the same time the pH value ... added chloride concentration in concrete. In the tests on cement paste specimens, Arya and Newman (1990) ...

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RCT and RCTW - GERMANN

2014-6-7  Measuring the chloride ion content of fresh concrete or its constituents Principle A powder sample of hardened concrete is obtained by drilling or grinding from the structure, or a sample is obtained from the fresh concrete. The sample is mixed into a distinct amount of extraction liquid and shaken for five minutes. The extraction liquid ...

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Chloride in cement Advances in Cement Research

2015-3-2  The total chloride content in concrete can, it is claimed, only be determined by XRF (Dhir et al., 1990). A round-robin chloride test was carried out in 30 laboratories and the results of 64 measurements of total chloride content were reported by Castellote and Andrade (2001a). Three methods were used for extracting chlorides from the solid ...

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Strength and Chloride Content of Nanoclayed Ultra-High ...

2015-4-21  of fresh concrete, strength properties and chloride content of UHPC and UHPC-NCs specimens. The strength performance namely compressive strength and tensile strength were conducted. For chloride content, the amount of chloride penetrating UHPC and UHPC-NCs specimens were determined. The following sub-sections explain each test.

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Chloride content limits recommended by ACI Committee

tests for total chloride content (of the hardened concrete) be made first, according to the method of ASTM C 114. (If desired, the chlori d e content of any of the ingre d i e n t s may be determined separa t e l y.) If the total chloride content exc e e d s the allowable limits, then the water-soluble portion should be mea-s

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Chlorides and concrete.

Chlorides have little effect on hardened concrete but they increase the risk of reinforcement corrosion. Corrosion of the reinforcement will be initiated when the chloride ion concentration at the steel reaches the so called ‘threshold level’. The subject of a safe level of chloride is somewhat controversial A fairly traditional view is ...

get price

Chloride limits in the ACI 318 ... - Concrete Construction

chloride ion (Cl-) content chloride corrosion in concrete, percent by threshold (0.15% weight of cement by weight of cement) Prestressed concrete 0.06 40 Reinforced concrete exposed to chloride in service 0.15 100 Reinforced concrete that will be dry or protected from moisture in service 1.00 666 Other reinforced concrete construction 0.30 200 ...

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Chloride Content of Concrete - Atlantic Testing

2020-1-29  The most common source of chloride ions is deicing salts but they can also come from aggregates, mix water, accelerating admixtures, and even from adjacent soils. There are three commonly used test methods of chloride content determination of hardened concrete: ASTM C 1218 for determining water-soluble content; ASTM C 1152 for determining the ...

get price

Measuring chloride ion contents in new concrete: how to ...

2018-4-4  The chloride ion content of new concrete may be determined by testing the concrete, or by calculating the contribution of chlorides from the aggregates, admixtures and mix water used to make the concrete. NZS 3101 specifies methods of measuring the acid-soluble chloride ion content of new concrete.

get price

RCT and RCTW - GERMANN

2014-6-7  Measuring the chloride ion content of fresh concrete or its constituents Principle A powder sample of hardened concrete is obtained by drilling or grinding from the structure, or a sample is obtained from the fresh concrete. The sample is mixed into a distinct amount of extraction liquid and shaken for five minutes. The extraction liquid ...

get price

Chloride in cement Advances in Cement Research

2015-3-2  The total chloride content in concrete can, it is claimed, only be determined by XRF (Dhir et al., 1990). A round-robin chloride test was carried out in 30 laboratories and the results of 64 measurements of total chloride content were reported by Castellote and Andrade (2001a). Three methods were used for extracting chlorides from the solid ...

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The Influence of C3A Content in Cement on the

2016-11-7  The present study concerns the influence of C 3 A in cement on chloride transport in reinforced concrete. Three modified cement was manufactured in the variation of the C 3 A content, ranging from 6.0 and 10.5 up to 16.9%. The setting time of fresh concrete was measured immediately after mixing, together with the temperature at the time of initial set.

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Chloride content limits recommended by ACI Committee

tests for total chloride content (of the hardened concrete) be made first, according to the method of ASTM C 114. (If desired, the chlori d e content of any of the ingre d i e n t s may be determined separa t e l y.) If the total chloride content exc e e d s the allowable limits, then the water-soluble portion should be mea-s

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FORMULATION OF AN EQUATION FOR SURFACE

The content is as follows: (1) From chloride concentration data of concrete structures, boundary condition for diffusion equation is assumed to be a linear function of square root of the age of the structure concerned; (2) The constant coefficient for the linear function is assumed according to the environment of the structure, and (3) From the ...

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Chlorides and concrete.

Chlorides have little effect on hardened concrete but they increase the risk of reinforcement corrosion. Corrosion of the reinforcement will be initiated when the chloride ion concentration at the steel reaches the so called ‘threshold level’. The subject of a safe level of chloride is somewhat controversial A fairly traditional view is ...

get price

Chloride limits in the ACI 318 ... - Concrete Construction

chloride ion (Cl-) content chloride corrosion in concrete, percent by threshold (0.15% weight of cement by weight of cement) Prestressed concrete 0.06 40 Reinforced concrete exposed to chloride in service 0.15 100 Reinforced concrete that will be dry or protected from moisture in service 1.00 666 Other reinforced concrete construction 0.30 200 ...

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Effect of Cement Content on Concrete Performance

2020-10-13  correlations between fresh and hardened properties of concrete and cement content. 2.1. Mix Proportioning In the most basic of terms concrete is made up of water, aggregate, and cementitious materials. Portland cement reacts with water to become the binder holding the mixture together.

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