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Chapter B: Using Reclamation's Concrete Maintenance and Repair System

Concrete samples provide valuable information to assess the cause and extent of damage when visual examination alone is insufficient. Obtaining concrete cores allows for testing of physical properties and petrographic examination to determine the source of issues. This information is important to support decisions about repairs.

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41 views1 page

Chapter B: Using Reclamation's Concrete Maintenance and Repair System

Concrete samples provide valuable information to assess the cause and extent of damage when visual examination alone is insufficient. Obtaining concrete cores allows for testing of physical properties and petrographic examination to determine the source of issues. This information is important to support decisions about repairs.

Uploaded by

Anonymous BAzcBzWu
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© © All Rights Reserved
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Chapter B: Using Reclamation’s Concrete Maintenance and Repair System

Figure 5. Poor quality aggregate used in concrete placed in the late


1960s led to the need for expensive repairs in the 2000s.

Unfortunately, it is often difficult or impossible to confirm a cause of damage by


visual examination alone. Evaluating several samples of concrete by obtaining
concrete cores provides very valuable information (figure 6). The information is
very important to support any decisions to make or to postpone repairs. The
concrete cores can be tested for physical properties. In addition, a petrographic
exam of representative concrete cores helps to determine the cause and extent of
damage. Refer to Appendix IB, “Petrographic Analysis for Concrete,” and
section B.2. for more information about the uses of petrographic exams of
concrete.

Figure 6. Obtaining concrete samples is very important to properly


assess the cause and extent of damage. In this case, the concrete
apron was a few inches below the water surface.

I-15

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