The International Information Center for Geotechnical Engineers

Stabilization/Solidification - 7.0 Quality Assurance/Quality Control (QA/QC)

 

 

7.0 Quality Assurance/Quality Control (QA/QC) for S/S

 

QA/QC are operations conducted to ensure that the S/S product meets requirements. Typical objectives for S/S treatment of wastes include (Shi, 2004):

  • Contaminant mobility (leachate) reduction
  • Support strength
  • Environmental durability
  • Low hydraulic conductivity

QA/QC plans are necessary to ensure these objectives can be achieved. QA/QC plans usually involve a series of pre-treatment and post-treatment tests. These include tests on the cement and additives, wastes, mixing water, freshly mixed wastes, and hardened wastes. (Shi, 2004)

  • Pre-treatment testing

Components of cement and wastes (physical and chemical characteristics)

Mixing water (no substances, detrimental to the S/S treatment process, present)

Bench- and pilot-scale treatment testing: a demonstration of the effectiveness of the selected treatment method.

  • Post-treatment testing on freshly mixed wastes

Content of cement or additives

Volume increase

Bulk density and moisture content

Consistency

Concentration of contaminants

  • Post-treatment testing on hardened treated wastes

Strength/penetration resistance

Hydraulic conductivity

Leachability

Durability



Add comment

NOTE: The symbol < is not allowed in comments. If you use it, the comment will not be published correctly.

Security code
Refresh
*Please insert the above-shown characters in the field below.

The Geoengineer.org Corporate Sponsors: