Concrete
  • Aggregate cement ratio.
  • Presence of HAC & confirmation by silica/aluminium and calcium oxide/aluminium ratios.
  • Chloride content, acid & water soluble.
  • Sulfate content acid & water soluble.
  • Sulfide content (ggbs).
  • Alkalis.
  • Capillary porosity.
  • Original water cement ratio.
  • Depth of carbonation.
  • pH.
  • Aggregate recovery & grading.
  • Alkaline hydrolysis.
  • Visual examination of concrete. Description, aggregate type etc, with photo (normally accompanies compressive strength test)
  • Initial surface absorption (ISAT)
  • Water absorption
  • Loss on ignition
  • UPV testing for fire damage.
  • Microcracking.
  • Compressive strength.#
  • Petrographic examination.#
  • Admixtures.#

# Subcontracted testing

 

Mortar
  • Mix proportions.
  • Sulfate content.
  • Sulfide content (ggbs).
  • Fine aggregate, silt & clay content & grading.
  • Iron oxide, aluminium oxide & magnesium oxide content.
  • Chloride content.

 

Screed
  • Mix proportions.
  • Sulfate.
  • Fine aggregate, silt & clay content & grading.
  • Analysis of magnesium oxychloride and calcium sulfate based screeds .

 

Gypsum building plasters
  • Sulfate & calcium oxide content
  • Soluble sodium & magnesium content.
  • Loss on ignition.
  • Free lime content
  • Contamination with cement.

 

Aggregate
  • Water & acid soluble sulfate content.
  • Water soluble chloride content.
  • Total sulfur content.
  • Sulfide content.
  • Carbon dioxide (carbonate) content.
  • Loss on ignition.
  • Sand equivalent
  • Methylene blue value.
  • Lightweight contaminators.
  • Initial consumption of lime
  • Shell content
  • ASR to ASTM C289.
  • Petrographic examination.#

# Subcontracted testing

Clay masonry units
  • Soluble salts content.
  • Sulfate content.
  • Water absorption.
  • Compressive strength.#

# Subcontracted testing

Soil
  • Organic matter content.
  • Acid & water soluble sulfate content.
  • Acid & water soluble chloride content.
  • pH value.
  • Loss on ignition.
  • Metals (excluding mercury & selenium).
  • Calcium content.
  • BOD & COD.
  • Moisture content.

Water
  • Qualitative preliminary inspection & quantative appraisal to BS EN 1008:2002.
  • Sulfate content
  • Chloride content
  • pH.
  • Total dissolved solids.