Calcium Chloride Test ASTM F-1869 The calcium chloride test long considered the standard for testing concrete moisture vapor emissions has been in use since the 1940s This test produces a moisture vapor emissions rate (MVER) which is a reading of how much moisture content is released from 1000 square feet of concrete slab over a 24-hour
Annua Concrete Sem nar 2005 Annual Concrete Seminar 2005 1 Carbonation Chloride Penetration of Concrete Structures Dr Tommy oo City University of Hong Kong Annual Concrete Seminar 2005Annua Concrete Sem nar 2005 2 Durable concrete must have the ability to withstand the potentially deteriorative conditions to which it can reasonably be
Usage of sea sand for concrete development is the possible alternative for river sand and avoids the excessive sand mining which may cause ecological and environmental problems Sea sand is not used in concrete since it contains chloride ions which can corrode steel In order to avoid the corrosion the salt content of the sea sand must be eliminated before being utilized in concrete Present
The estimated initial chloride content determined by calculation of the chloride content of concrete materials and the concrete mixture proportions can be used to ensure that proposed mixtures will conform to the chloride limits stated in the Building Code and specifications This permits the concrete producer to make adjustments to the mixture
used to measure the content deeper in the concrete A hole is drilled and a plastic plug is placed in it The probe of the hu-midity gauge is inserted into the plug and left to stabilize RH readings are then taken Measuring Moisture in Concrete JPCL – PMC/ MARCH 1998 53 Fig 1 - Calcium chloride test
DETERMINING CHLORIDE IN CONCRETE TXDOT DESIGNATION TEX-617-J CONSTRUCTION DIVISION 3 – 14 LAST REVIEWED OCTOBER 2014 Note 4—Test the filtrate for chloride by adding one to two drops of filtrate from the funnel to dilute silver nitrate solution Any turbidity indicates chlorides present 2 3 5 Cool the solution to 77 2F (25 1C)
Calcium chloride (CaCl2) is the most commonly used accelerant The concrete formed has a high compressive strength due to the tight bonding of the materials but a low tensile strength (stress exerted in force per unit area before strain is observed) Due to the low tensile strength steel is often added to reinforce the concrete
4 1 AASHTO T259 Standard Method of Test for Resistance of Concrete to Chloride Ion Penetration (Salt Ponding Test) The AASHTO T259 test (commonly referred to as the salt ponding test) is a long- term test for measuring the penetration of chloride into concrete The test
Energy Dispersive X-ray Spectrometry for Determining Chloride Concentration Profiles in Concrete Liam Holloway1 2and Nimue Pendragon 1Principal Engineer MEnD Consulting 2Lead Consulting Scientist Microanalysis Australia Abstract Assessing the condition or durability performance of existing reinforced concrete infrastructure can involve a broad range of investigation techniques
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
This has necessitated the need to check the effect admixtures have on some properties of concrete This study investigated the effect of calcium chloride (CaCl2) as an admixture on the compressive strength of concrete produced from Dangote Elephant and Burham brands of cement available in Nigeria
Chloride Content Test on Concrete Structures Chloride content can be determined from broken samples or core samples of concrete Primarily the level of chloride near the steel-concrete interface is of prime importance Chloride present in concrete are
BS-EN-14629 Products and systems for the protection and repair of concrete structures Test methods Determination of chloride content in hardened concrete - Concretes Structures Repair Corrosion protection Maintenance Reinforcing steels Chemical analysis and testing Determination of content Chlorides Volumetric analysis Potentiometric methods Test specimens Specimen preparation
chloride in hardened concrete based on the extraction with distilled water 3 DEFINITIONS 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
AASHTO T 260 Standard Method of Test for Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials This standard provides for the determination of chloride ion content by two procedures Procedure A Determination of Acid-Soluble Chloride Ion Content and Water-Soluble Chloride Ion Content by Potentiometric Titration or
BS 1377 Part 3 BRE Chemical and electro-chemical tests BS 1377 Part 4 Compaction-related tests BS 1377 Part 5 Compressibilty permeability and durability tests BS 1377 Part 6 Consolidation and permeability tests with pore pressure measurement BS 1377 Part 7 Shear strength tests (total stress) BS 1377 Part 8 Shear strength tests (effective
BS EN 14629 2007 Products and systems for the protection and repair of concrete structures Test methods Determination of chloride content in hardened concrete (British Standard) This standard describes two methods for the determination of the total (free and bound) acid soluble chloride content of hardened concrete or mortar
test  is the only input parameter which needs to be measured and there is no requirement for the surface chloride content of the concrete which can significantly influence the result when using the erfc solution As chloride transport is modelled by pure diffusion the model will only predict the s
Withdrawn Rationale This test method determines the penetration of chloride ion into concrete from a sodium-chloride solution pond This method is applicable to all types of concrete as well as to concretes treated with systems such as sealants penetrating sealers or thin-bonded overlays
Aug 05 2015It shall be cured and placed inside the curing tank for 28 days prior to testing The sample is to be tested in accordance with BS 1881-208 The water permeability test Rapid Chloride Ion Penetration test water absorption test and the initial surface absorption test tests to determine the durability of concrete
IS 1199-1959 Method of sampling and analysis of concrete ASTM C42/C42 M-04 Standard test method for obtaining and testing drilled cores and sawed beams of concrete BS 1881 Part 120 1983 Method for determination of the compressive strength of concrete cores Concrete core testing for strength Tech Report 11 Concrete Society London 1987
The British and European standard BS EN 1504 "Products and systems for the repair and protection of concrete structures – definitions requirements quality control and evaluation of conformity" defines appropriate procedures and characteristics of products used to repair maintain and protect concrete
Acceptable Use of Calcium Chloride in Concrete ASCC Position Statement #31 ACI 318-08 "Building Code Requirements for Structural Concrete " with some exceptions allows calcium chloride as an accelerating admixture for cast-in-place concrete But many specifications prohibit its use This is unfortunate because calcium
6 4 Limits of chloride content of concrete 6 5 Minimum periods of curing and protection 6 6 Minimum period before striking formwork (concrete METHOD OF NORMAL CURING OF TEST SPECIMENS (20 DEGREES C METHOD) BS 1881-116(1983) 1983 TESTING CONCRETE - METHOD FOR DETERMINATION OF COMPRESSIVE STRENGTH OF CONCRETE CUBES
Sulphate Attack and Chloride Ion Penetration Their Role in Concrete Durability March 99 subject of much debate (Refs 11 12) The key issues here appear to be associated with pore chemistry and heat generated The end result is of concern in particular with regard to the test data obtained when there are materials such as fly ash
DETERMINING CHLORIDE AND SULFATE CONTENTS IN SOIL TXDOT DESIGNATION TEX-620-J CONSTRUCTION DIVISION 3 – 11 LAST REVIEWED OCTOBER 2014 PART I—ION CHROMATOGRAPHY METHOD 3 SCOPE 3 1 This method for the determination of chloride and sulfate ions in water by chromatography is similar to the method described in ASTM D 4327
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