Chemical admixtures have become an important part of everyday concrete production. Thanks to admixtures we are able to alter the performance of concrete in ways that previously were not possible. There are several types of admixtures such as:

  • Water Reducing Admixtures (low range, mid-range and high range) that allow you to reduce water in concrete, therefore increasing the strength of the concrete
  • Retarding and Accelerating Admixtures allow you vary the setting time of the concrete
  • Shrinkage-Reducing Admixtures are used to minimize shrinkage in concrete and subsequently the tendency of cracking
  • Alkali-Silica (ASR) Suppressing Admixtures help mitigate or suppress ASR
  • Air Entraining Admixtures which allow the concrete producer to control the amount of air in a concrete mix. The air content in concrete often determines how well it will withstand freezing and thawing

These are just a few of the admixtures available for helping concrete performance.

TEC Services' laboratory is audited and/or inspected by AMRL (AASHTO Materials Reference Laboratory), CCRL (Cement and Concrete Reference Laboratory) and the US Army Corps of Engineers for admixture testing. Our laboratory accreditations include: ISO 17025, AASHTO R18 and we are an approved laboratory for the US Army Corps of Engineers. TEC Services can submit data to ICC-ES (International Code Council - Evaluation Service) for AC 198 Acceptance Criteria for Chemical Admixtures Used in Concrete. TEC Services works closely with ASTM in the development of test methods, testing guidelines and specification for all types of admixtures.

Our laboratory has performed research, quality control, and certification testing with just about every type of admixture produced. Here at TEC Services, we pride ourselves in the quality of our work and our capabilities in working with the admixture and concrete industry. A basic list of some of the admixture testing our laboratory provides is listed below.

This list consists of tests that we perform on a regular basis. If a test is desired that is not listed below please call and inquire for further details.

Specification for Concrete Aggregates
Compressive Strength of Cylindrical Concrete Specimens
Flexural Strength of Concrete
Sieve Analysis of Fine and Coarse Aggregates
Density, Yield, and Air Content of Concrete
Slump of Hydraulic Cement Concrete
Specification for Portland Cement
Length Change of Hardened Hydraulic-Cement Mortar and Concrete
Air Content of Hydraulic Cement Mortar
Making and Curing Concrete Test Specimens in the Laboratory
Air Content of Freshly Mixed Concrete by the Pressure Method
Air-Entraining Admixtures for Concrete
Specification for Air-Entraining Admixtures for Concrete
Time of Setting of Concrete Mixtures by Penetration Resistance
Specification for Chemical Admixtures for Concrete
Resistance of Concrete to Rapid Freezing and Thawing
Specification for Chemical Admixtures for Use in Producing Flowing Concrete
ASTM C1610
Standard Test Method for Static Segregation of Self Consolidating Concrete Using Column Technique
ASTM C1611
Standard Test Method for Slump Flow of Self Consolidating Concrete
ASTM C1621
Standard Test Method for Passing Ability of Self Consolidating Concrete by J-Ring
ASTM G109
Determining Effects of Chemical Admixtures on Corrosion of Embedded Steel Reinforcement in Concrete Exposed to Chloride Environments
ICC-ES AC 198
Acceptance Criteria for Chemical Admixtures Used in Concrete
CRD-C12
Air-Entraining Admixtures for Concrete
CRD-C13
Specification for Air-Entraining Admixtures for Concrete
CRD-C61
Test Method for Determining the Resistance of Freshly Mixed Concrete to Washing Out in Water
CRD-C87
Specification for Chemical Admixtures for Concrete
CRD-C88
Specification for Chemical Admixtures for Use in Producing Flowing Concrete
CRD-C661
Specification for Anti-washout Admixtures for Concrete
   
Slump Testing Slump Testing
Making Slump Test Sample Making Slump Test Sample
Length Change Testing Length Change Testing
Freeze Thaw Cabinets Freeze Thaw Cabinets