ASTM C1240-20 - 15.1.2020
 
1. Scope

1.1 This specification covers silica fume for use in concrete and other systems containing hydraulic cement.

1.2 In the cases of slurried or densified silica fume, perform the tests on the raw silica fume from which these products have been made.

1.3 The units stated in SI are to be regarded as the standard. No other units of measurement are included in this standard.

1.4 The following safety hazards caveat pertains only to the test methods portions, Sections 10 – 19, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Read the material safety data sheets for materials used.

1.5 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes (excluding those in tables) shall not be considered as requirements of this standard.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

C219-20a

Standard Terminology Relating to Hydraulic and Other Inorganic Cements (Includes all amendments and changes 8/28/2020).

C1437-20

Standard Test Method for Flow of Hydraulic Cement Mortar

C183-13

Standard Practice for Sampling and the Amount of Testing of Hydraulic Cement

C135-96(2022)

Standard Test Method for True Specific Gravity of Refractory Materials by Water Immersion

C125-21a

Standard Terminology Relating to Concrete and Concrete Aggregates (Includes all amendments and changes 10/14/2021).

C114-23

Standard Test Methods for Chemical Analysis of Hydraulic Cement

C311/C311M-24

Standard Test Methods for Sampling and Testing Coal Ash or Natural Pozzolans for Use in Concrete

C109/C109M-23

Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 50?mm [2 in.] Cube Specimens)

C430-17

Standard Test Method for Fineness of Hydraulic Cement by the 45-µm (No. 325) Sieve

C441/C441M-17

Standard Test Method for Effectiveness of Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive Expansion of Concrete Due to the Alkali-Silica Reaction

C494/C494M-19e1

Standard Specification for Chemical Admixtures for Concrete (Includes all amendments and changes 8/11/2022).

C604-18(2023)

Standard Test Method for True Specific Gravity of Refractory Materials by Gas-Comparison Pycnometer

C670-24a

Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials (Includes all amendments and changes 3/11/2024).

C1005-20

Standard Specification for Reference Masses and Devices for Determining Mass and Volume for Use in Physical Testing of Hydraulic Cements

C1012/C1012M-18b

Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution (Includes all amendments and changes 1/9/2019).

C1069-09(2022)

Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption

C1157/C1157M-23

Standard Performance Specification for Hydraulic Cement

C185-20

Standard Test Method for Air Content of Hydraulic Cement Mortar