How it Works

One Stop Solution for Construction Materials Testing

At A & S Laboratories, Inc., we specialize in chloride testing and corrosion materials testing with prompt, accurate results.

A & S Laboratories, Inc. Microscope

Chloride Testing

Acid-Soluble[~lander] and Water-Soluble[~lander] tests are the two most common forms of chloride testing.

Chloride ions are one of the most common pollutants in concrete and can cause reinforcement corrosion thus, quality chloride testing is first line of defense against corrosion.

ASTM C-1152 Acid-Soluble Chlorides Test

The Acid Soluble is a complete extraction method for construction materials. The results of this test can be used to assess the degree of corrosion that may occur in concrete or mortar containing chloride ions.

ASTM C-1218 Water-Soluble Chlorides Test

ASTM C-1218 is an essential tool for ensuring the quality of water-soluble chlorides. Water-Soluble chlorides (ASTM C1218) requires an extra day of testing.


The presence of a large number of chlorides will degrade structures and drastically reduce their lifespan.


The corrosion of steel in concrete has received a lot of attention because of the high cost of repairs. As a result of the vast study into the components that contribute to steel corrosion, we now have a better knowledge of corrosion, particularly the involvement of chloride ions. Chloride ions are abundant in nature, and minor quantities are frequently found in concrete mix materials.

Chloride ions can be the primary cause of steel reinforcement corrosion. That is why research has shown the need for high-quality concrete, as well as meticulous testing and reasonable limits on chloride in concrete and the concrete components used to make it.

A & S Laboratories, Inc.


Carbonation is a slow process in concrete with a low water-cement ratio, and it is less prevalent than corrosion caused by chloride ions. Environmental conditions have a significant impact on the rate of corrosion of steel reinforcement implanted in concrete. If electrochemical corrosion occurs, both oxygen and moisture must be present. Dissolved chloride ions can penetrate unprotected hardened concrete in structures open to marine environments or deicing salts.

Macrocell Corrosion

Macrocell corrosion can occur in reinforced concrete with a high chloride ion concentration, especially when subjected to wetting and drying cycles. Corrosion causes concrete to deteriorate because the corrosion products, such as rust, occupy a larger volume than the steel and, as a result, put significant loads on the surrounding concrete. The corrosion's visible impacts include concrete discoloration, cracking, and spalling.

Useful Options

To date, no corrosion research has yielded a steel or other form of reinforcement that will not corrode in concrete that is both cost-effective and technically possible. Other options being considered include corrosion inhibitors, steel protective coatings, and cathodic protection. Although there has been considerable progress in each area, issues originating from embedded metal corrosion have not been completely removed.

Concrete, Mortar, and Grout

  • ASTM C 1260
    Alkali-silica reactivity( ASR) by mortar-bar
  • ASTM C 1567
    Alkali-silica reactivity( ASR) combinations by chemical method
  • ASTM C 1293
    Alkali-silica reactivity( ASR) by length change
  • ASTM C 39/42
    Compressive strength test
  • ASTM C 109
    Compressive strength of mortar cubes
  • ASTM C 642
    density, absorption, voids


  • Whole Rock1
    Whole rock analysis by ICP
  • Whole Rock2
    Whole rock analysis by XRF
  • ASTM C 88
    Sodium & magnesium sulfate soundness
  • ASTM C 1524
    Soxhlet method water-extractable chlorides
  • ASTM C 128
    Specific gravity and absorption of fine aggregate
  • ASTM C 136
    Sieve analyses of fine and coarse aggregates

Concrete Water Testing ASTM C1602

  • Batch/Mix1
    (Alkalinity, chlorides, organic & inorganic solids, sulfates)
  • Batch/Mix2
    (Alkalinity, chlorides, organic & inorganic solids, sulfates) + mortar cubes
  • Reclaimed/Recycled1
    (Alkalies, chlorides, total solids, sulfates)
  • Reclaimed/Recycled2
    (Alkalies, chlorides, total solids, sulfates) + mortar cubes
A & S Laboratories, Inc.