Chemistry

The Chemical Services Division at Schmitt Technical Services, Inc. (STS) is comprised of two, full-time dedicated chemists. We take pride in helping our clients solve whatever complicated and challenging problems they may encounter. Our laboratory staff can investigate material failures using a variety of instrumental techniques, including:

  • Fourier Transform Infrared (FT-IR) spectroscopy
  • X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) spectroscopy
  • Gas Chromatography/Mass Spectrometry (GC/MS)
  • High Pressure Liquid Chromatography/Mass Spectrometry (HPLC/MS)
  • Ion Chromatography (IC)

Additionally, we can perform a multitude of wet chemistry methods (primarily from ASTM), valuable in determining the composition of construction materials. These various materials can include cement, concrete, swimming pool/spa plaster or historic mortar. As a part of this area of expertise, we also are able to provide technical support in terms of product development.

  • Chemical Analysis of Hydraulic Cement, ASTM Method C 114
  • Heat of Hydration of Hydraulic Cement, ASTM Method C 186
  • Acid Soluble Chloride in Mortar and Concrete, ASTM Method C 1152
  • Water Soluble Chloride in Mortar and Concrete, ASTM Method C 1218
  • Examination and Analysis of Hardened Masonry Mortar, ASTM Method C 1324
  • Water Soluble Sulfate Content in Soil, AASHTO Method T 290
  • Water Soluble Chloride Content in Soil, AASHTO Method T 291

While the primary wet chemistry methods employed listed are readily available from ASTM or AASHTO, the experienced chemists at Schmitt Technical Services, Inc. can actually provide context to their results. We provide solutions-not just data.

Schmitt Technical Services Chemistry
We can analyze practically any material using Fourier Transform Infrared Spectroscopy (FTIR)


Schmitt Technical Services Chemistry
Performing Loss on Ignition as part of Cement Content Determination by ASTM C 1084


Schmitt Technical Services Chemistry
Analysis of a cement sample for phase-type by X-Ray Diffraction (XRD)


Schmitt Technical Services Chemistry

 

 

 

 

 

 

 

 

 

 

 

 

Performing daily standard and quality check measurements for the X-Ray Fluorescence (XRF) instrumentation

Chemistry

 

FAQ

Q: What does the "Chemistry Services" division at Schmitt Technical Services, Inc. do?

A: The Chemical Service division at Schmitt Technical Services, Inc. acts as both a stand-alone and collaborating partner with the Petrographic Service division. We study the chemistry behind structural material failures and present solutions.

Q: I have an old mortar from the early 1900's that is part of a restoration project. What do I need done in order to determine the mortar type and composition?

A: Chemical composition of mortar is determined using ASTM Method C 1324. Results from this analysis are evaluated alongside petrographic analysis to determine the constituency of the mortar.

Q: How much material is required for a mortar analysis?

A: In order to perform a full chemical analysis by ASTM Method C 1324, approximately 10 grams of intact mortar sample is required by Schmitt Technical Services, Inc.

Q: How long does it take to complete the chemical portion of a mortar analysis?

A: This will generally take at least three to four working days to complete. Variations in time frame may be incurred, depending upon the nature of the material.

Q: I'm wondering whether the correct admixture and/or sealing compounds were used in my concrete structure, is there a way to analyze for them?

A: Yes, there are many instrumental techniques we can use to evaluate construction materials for the presence of different products. We typically will use a mixture of analytical techniques; Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD), X-Ray Fluorescence (XRF) and/or Chromatographic (Gas, Liquid or Ion). These chromatographic techniques can be combined with Mass Spectroscopy (MS) for exceptionally accurate material detection and evaluation.

Q: I want to send in some samples from my plaster swimming pool/spa for evaluation, where should I take them from in the pool?

A: Sampling location in an environment such as a pool or spa is crucial to obtaining scientifically robust results. Additionally, multiple locations within the pool or spa should be sampled for comparison purposes. Suggested sampling locations would be from the interior wall of the pool, away from water returns, pool chemical "floaters" or other areas of potential environmental contamination. These should be at least 10-15 in.2 (2"x5" – 3"x5"), with removal down to the subsurface wall.

Q: I know I need some kind of chemical analysis performed, but I'm just not too sure what it is!

A: Our staff at Schmitt Technical Services, Inc. has the type of expertise to be able to quickly ascertain what sort of analysis is required to solve your problem(s). The goal of Schmitt Technical Services, Inc. is providing you with answers that have a practical application for your project.

Q: This all sounds great, but I'm concerned about costs on my project. What sort of fees do you charge for your Chemistry Services?

A: The fee schedule at Schmitt Technical Services, Inc. will vary depending upon a number of factors, including the technical research required, analysis time, type of analysis, etc. Just as each project is unique, so too are fees associated with a project. However, all projects are quoted and agreed upon prior to any beginning sample analysis at Schmitt Technical Services, Inc.