ASTM C430
Full Name
ASTM C430 – Standard Test Method for Fineness of Hydraulic Cement by the 45-μm (No. 325) Sieve
Scope
ASTM C430 outlines the procedure for determining the fineness of hydraulic cement using a 45-μm sieve.
The scope of ASTM C430 includes:
- Purpose: the main purpose is to determine the percentage of cement particles retained on the 45-μm sieve, which is an indicator of the cement’s fineness. Finer cement generally reacts faster and contributes to early strength development in concrete.
- Principle: a known mass of cement is washed through a 45-μm sieve using a gentle stream of water. The residue retained on the sieve is dried and weighed to calculate the percentage retained.
- Apparatus: specifies the requirements for the sieve frame, sieve cloth or electroformed sheet, spray nozzle, and pressure gauge used in the test.
- Procedure: details the step-by-step process of preparing the sample, wetting the sieve, washing the cement through the sieve, drying the residue, and calculating the percentage retained.
- Precision and bias: provides information on the precision and bias of the test method.
This test method is important for quality control in cement production and for ensuring that the cement used in construction meets the specified fineness requirements. The fineness of cement can affect its workability, hydration rate, and strength development in concrete.
ASTM C430 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C430 standard.
Contact us today to learn more about our testing capabilities and how we can support your business.
Resources
Keywords
fineness; sieve; hydraulic cement; 45-μm sieve; residue; particle size; washing