SOIL TESTING

Chemical Testing of Soil & Water

Chemical Testing involves a comprehensive laboratory analysis to identify the presence of aggressive ions and chemical constituents in soil and groundwater. This evaluation is vital to assess the long-term durability of foundations and structural materials against corrosion and chemical degradation.

📷 Laboratory Titration and pH Measurement Setup

Test Objectives

  • Quantify Sulfates ($SO_3/SO_4$), Chlorides ($Cl$), and $pH$ levels
  • Identify Organic Matter and total dissolved solids (TDS)
  • Assess the risk of acid or salt attack on underground structures

Design Utility

  • Selection of Sulfate-Resisting Cement (SRC) or specific concrete mixes
  • Design of protective coatings for steel piles and reinforcement
  • Evaluation of groundwater effects on curing and longevity

Asset Protection

  • Ensures a structural design life exceeding 50+ years
  • Prevents reinforcement corrosion and concrete spalling
  • Avoids costly remedial repairs to buried foundations

Reporting Metrics

  • Chemical Concentration (mg/L or %)
  • Categorization of Aggressive Environment (AS/BS Standards)
  • Recommended concrete exposure class (e.g., DC-1 to DC-4)
📷 Close-up of Soil Extract Filtration

Underground environments are often chemically active. Chlorides are the primary cause of steel reinforcement corrosion, while Sulfates react with concrete to cause expansion and disintegration.

By testing both soil and groundwater samples, we determine the Exposure Class of your site. Our engineering reports provide specific guidance on cement types (such as OPC vs. SRC) and the required Water-Cement ratio to ensure that your foundation remains impervious to the "silent" threat of chemical attack from the soil.

Subsurface Durability Validation

Our Methodology

  • 1 Collection of representative soil and water samples from site
  • 2 Precision chemical titration and electrochemical pH analysis
  • 3 Interpretation of aggressive agents against construction codes
  • 4 Protection recommendations for concrete and structural steel
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