Failure Analysis

Unwelcome problems in new concrete construction can include cracks, delaminations, or honeycombs in formed surfaces to name a few. Low compressive strength results can suggest overwatering or improper curing. However, petrographic examination coupled with other supplementary tests such as chloride content determination are used to investigate a much wider range of possible root causes including mix design inconsistencies, unsound components, deposition failures, and improper finishing.

When investigating causes of failure in new masonry walls, our clients turn to us for scientific support. Highbridge can assist with a wide range of concerns - from investigating the source of efflorescence and potential for damage through x-ray diffraction analysis to evaluating features like step cracking, face spalling, or crumbling mortar through a more complex investigation into material properties and compatibilities.

Our laboratory testing regularly supplements our client's field investigations of failures in newly-installed dimension stone. Highbridge uses a combination of mechanical properties testing, petrographic examination, and instrumental analysis to assess inherent material features that can contribute to cracking, bowing, and other physical defects. Durability testing can also be performed to evaluate future behavior and compare sound and defective units.

There is nothing more frustrating than when an intended fix does not go as planned, and Highbridge can help evaluate why. The success of concrete and masonry repairs depend on a multitude of factors. We employ physical property testing, microscopical evaluations, and chemical analysis to assess the compatibility of the repairs with the substrate and adjacent materials as well as whether the repair may be appropriate for a given application or service environment.

Post-holes used to anchor handrails are a common point of failure in concrete balconies. The use of expansive grouts, gypsum grouts, or cements that react with uncoated aluminum may all result in spalling of adjacent concrete. Any investigation of concrete cracking or spalling should include an evaluation of these materials and a careful determination of whether residues of older reactive repairs have been properly removed.

There are cases of catastrophic concrete loss or masonry collapse that are clearly structural in nature. Still, due diligence demands an evaluation of all constituent materials to help understand their role in resisting or accelerating the failure. Our laboratory staff are always prepared to support forensic engineers, construction attorneys, and insurance investigators when the need arises.