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Uganda Notifies Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, Flexural Strength of Concrete, Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete, slump of hydraulic-cement concrete, Length Change of Hardened Hydraulic-Cement Mortar and Concrete, Making and Curing Concrete Test Specimens in the Laboratory, Air Content of Freshly Mixed Concrete by the Pressure Method, Air- Entraining Admixtures for Concrete, Time of Setting of Concrete Mixtures by Penetration Resistance, Resistance of Concrete to Rapid Freezing and Thawing, Specific Gravity, Apparent, of Liquid Industrial Chemicals, Reagent Water, General Techniques for Obtaining Infrared Spectra for Qualitative Analysis

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Uganda Notifies Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens, Flexural Strength of Concrete, Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete, slump of hydraulic-cement concrete, Length Change of Hardened Hydraulic-Cement Mortar and Concrete, Making and Curing Concrete Test Specimens in the Laboratory, Air Content of Freshly Mixed Concrete by the Pressure Method, Air- Entraining Admixtures for Concrete, Time of Setting of Concrete Mixtures by Penetration Resistance, Resistance of Concrete to Rapid Freezing and Thawing, Specific Gravity, Apparent, of Liquid Industrial Chemicals, Reagent Water, General Techniques for Obtaining Infrared Spectra for Qualitative Analysis

Compressive Strength of Cylindrical Concrete Specimens.

The Standard covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a density in excess of 800 kg/m3 [50 lb/ft3].

Products covered: Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810). Concrete and concrete products, Concrete structures.

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Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)

The Standard covers the determination of the flexural strength of concrete by the use of a simple beam with third-point loading.

Products covered: Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810). Concrete and concrete products, Concrete structures

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Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete

The Standard covers determination of the density of freshly mixed concrete and gives formulas for calculating the yield, cement content, and air content of the concrete. Yield is defined as the volume of concrete produced from a mixture of known quantities of the component materials.

Products covered: Concrete. Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products

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slump of hydraulic-cement concrete, both in the laboratory and in the field

The Standard covers determination of slump of hydraulic-cement concrete, both in the laboratory and in the field.

Products covered: Hydraulic-cement concrete. Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products

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Length Change of Hardened Hydraulic-Cement Mortar and Concrete

The Standard covers determination of length Change of Hardened Hydraulic-Cement Mortar and Concrete.

Products covered: Hardened Hydraulic Cement Mortar, Hardened Hydraulic Concrete. Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810). Concrete and concrete products.

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Making and Curing Concrete Test Specimens in the Laboratory

The Standard covers procedures for making and curing test specimens of concrete in the laboratory under accurate control of materials and test conditions using concrete that can be consolidated by rodding or vibration as described herein.

Products covered: Concrete Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products.

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Air Content of Freshly Mixed Concrete by the Pressure Method.

The Standard covers determination of the air content of freshly mixed concrete from observation of the change in volume of concrete with a change in pressure. This test method is intended for use with concretes and mortars made with relatively dense aggregates for which the aggregate correction factor can be satisfactorily determined by the technique described in Section 6. It is not applicable to concretes made with lightweight aggregates, air-cooled blast-furnace slag, or aggregates of high porosity. In these cases, Test Method C173/C173M should be used. This test method is also not applicable to non-plastic concrete such as is commonly used in the manufacture of pipe and concrete masonry units.

Products covered: Freshly Mixed Concrete Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products.

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Air- Entraining Admixtures for Concrete

The Standardcovers materials proposed for use as air-entraining admixtures to be added to concrete mixtures in the field.

Products covered: Concrete admixtures. Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products.

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Time of Setting of Concrete Mixtures by Penetration Resistance

The Standardcovers the determination of the time of setting of concrete, with slump greater than zero, by means of penetration resistance measurements on mortar sieved from the concrete mixture. This test method is suitable for use only when tests of the mortar fraction will provide the information required. This test method may also be applied to prepared mortars and grouts. This test method is applicable under controlled laboratory conditions, as well as under field conditions.

Products covered: Concrete mixtures. Refractory cements, mortars, concretes and similar compositions, other than products of heading 38.01. (HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products

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Resistance of Concrete to Rapid Freezing and Thawing

The Standardcovers the determination of the resistance of concrete specimens to rapidly repeated cycles of freezing and thawing in the laboratory by two different procedures: Procedure A, Rapid Freezing and Thawing in Water, and Procedure B, Rapid Freezing in Air and Thawing in Water. Both procedures are intended for use in determining the effects of variations in the properties of concrete on the resistance of the concrete to the freezing-and-thawing cycles specified in the particular procedure. Neither procedure is intended to provide a quantitative measure of the length of service that may be expected from a specific type of concrete.

Products covered: Refractory cements, mortars, concretes and similar compositions(HS 3816), Articles of cement, of concrete or of artificial stone, whether or not reinforced. (HS 6810), - Non-refractory mortars and concretes (HS 382450). Concrete and concrete products

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Specific Gravity, Apparent, of Liquid Industrial Chemicals

The Standard covers the determination of the specific gravity, apparent, of liquid industrial chemicals. Two test methods are covered as follows: Test Method A, specific gravity, apparent, by means of a hydrometer and Test Method B, specific gravity, apparent, by means of a pycnometer.

Products covered: Liquid industrial chemicals. Products of the chemical industry

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Reagent Water

The Standard describes the required characteristics of waters deemed suitable for use with the Standards under the jurisdiction of ASTM. The alphanumeric characters ascribed to water types and grades are specified in the ASTM Format and Style Manual. These have been assigned in order of historical precedence and should not be taken as an indication of a progression in water purity. Four types of waters have been specified, with three additional grades that can be applied to the four types. The grade specifications specifically address contaminants of microbiological origin.

Products covered: Reagent water

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General Techniques for Obtaining Infrared Spectra for Qualitative Analysis

The Standard covers the spectral range from 4000 to 50 cm–1 and includes techniques that are useful for qualitative analysis of liquid-, solid-, and vapor-phase samples by infrared spectrometric techniques for which the amount of sample available for analysis is not a limiting factor. These techniques are often also useful for recording spectra at frequencies higher than 4000 cm–1, in the near-infrared region.

Products covered: Liquid, solid and vapour. Physicochemical methods of analysis

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Proposed date of adoption: December 2017

Proposed date of entry into force: Not applicable

Final date for comments: 60 days from notification

If the Proposal/Notification/Regulation will affect your International Business please send us your representation with facts and figures , so that these can be taken up suitably.

 

 


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