Modulus of Rupture Test Log for Brick (ASTM C67)
This log records ASTM C67 modulus of rupture test results for brick, including sample identity, fixture setup, specimen condition, and acceptance review. Use it to document flexural strength checks for qualification, incoming verification, or lot release.
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Built for: Brick Manufacturing · Construction Materials Testing · Masonry Supply · Quality Control Laboratories
Overview
This template is a test log for recording modulus of rupture results on brick sampled and tested under ASTM C67. It is built to capture the full chain of evidence around a flexural strength test: when the sample was taken, which lot and product it came from, how the fixture and supports were set up, whether the specimens were sound and properly conditioned, and what the individual and average results were.
Use it when you need a defensible record for product qualification, incoming verification, supplier acceptance, or lot release. The log helps you show not just the final number, but the conditions that produced it, including calibration status, span, loading arrangement, specimen dimensions, and any anomalies during loading. That makes it easier to compare results across lots and to investigate borderline or failed tests.
Do not use this template as a substitute for the ASTM C67 procedure itself, and do not use it for unrelated masonry tests such as compressive strength, absorption, or efflorescence. It is also not the right record if your organization does not perform flexural testing or if the acceptance decision is based on a different standard or customer-specific method. The value of this log is in traceability: it turns a one-off test into a clear quality record that can support release, rejection, or follow-up action.
Standards & compliance context
- This log supports ASTM C67 documentation by preserving the test conditions, specimen details, and calculated results needed for traceable quality records.
- The acceptance review section helps align release decisions with internal quality procedures and ISO 9001-style control of inspection evidence.
- Calibration and equipment checks support good laboratory practice and help demonstrate that test equipment was suitable for use at the time of testing.
- If the brick is used in regulated construction work, retain the record with the project quality file so it can support supplier verification and non-conformance review.
- Use customer specifications or internal acceptance criteria alongside the test method, since ASTM C67 provides the test framework but not every pass/fail threshold.
General regulatory context for orientation only — verify current requirements with counsel or the relevant agency before relying on this template for compliance.
What's inside this template
Inspection Identification
This section ties the test result to a specific sample, lot, and purpose so the record stays traceable.
- Test date and time recorded
- Sample ID, lot number, and product designation recorded
- Test purpose identified as product qualification, incoming verification, or lot release
Test Method and Equipment
This section confirms the ASTM C67 method and the test setup used to generate the result.
-
Test method reference documented as ASTM C67
Confirm the modulus of rupture test is performed and recorded under ASTM C67.
- Flexural test fixture and supports inspected and suitable for use
- Calibration status current for force measurement equipment
- Span, loading configuration, and specimen support arrangement documented
Specimen Condition and Preparation
This section documents whether the specimens were suitable for testing and prepared consistently.
- Number of specimens tested
- Specimens free of visible damage, chips, or pre-test cracks
- Specimen dimensions measured and recorded
- Conditioning or storage environment documented
Modulus of Rupture Results
This section captures the measured values and any unusual behavior observed during loading.
- Individual modulus of rupture values recorded
- Average modulus of rupture calculated
- Lowest measured modulus of rupture recorded
- Test anomalies or specimen failures during loading documented
Acceptance Review and Non-Conformance
This section records the pass/fail decision and what happens when results do not meet criteria.
- Results meet applicable product specification or internal acceptance criteria
- Non-conformance documented when results are below acceptance criteria
- Disposition selected for failed or inconclusive results
Review and Sign-Off
This section provides the final human review, comments, and signature needed to close the record.
- Inspector comments complete and legible
- Inspector signature captured
How to use this template
- Create a new record for each test event and enter the test date and time, sample ID, lot number, product designation, and the purpose of the test before any specimens are loaded.
- Confirm that the test method is ASTM C67, then record the fixture condition, support arrangement, span, loading configuration, and calibration status of the force-measurement equipment.
- Inspect each specimen for visible damage, chips, or pre-test cracks, measure and record the dimensions, and note the conditioning or storage environment before testing.
- Run the test, record each individual modulus of rupture value, calculate the average and lowest measured value, and document any anomalies or unusual specimen failures during loading.
- Compare the results against the applicable product specification or internal acceptance criteria, then document any non-conformance and select the correct disposition for failed or inconclusive results.
- Review the completed log for legibility and completeness, then capture the inspector signature and retain the record with the lot or quality file.
Best practices
- Record the sample identity and lot number before the first specimen is tested so the results cannot be separated from the source material.
- Document the span, support arrangement, and loading configuration exactly as used, because small setup differences can change the result.
- Verify calibration status for the force-measurement equipment before testing and stop the run if the status is expired or unclear.
- Measure and record specimen dimensions consistently, since dimension errors can distort the calculated modulus of rupture.
- Note visible chips, cracks, or edge damage before loading, even if the specimen is still tested, so the result can be interpreted correctly.
- Capture the lowest individual result, not only the average, because a weak specimen can drive the acceptance decision.
- Write down any break pattern, slippage, or fixture issue at the time of the test rather than reconstructing it later from memory.
- Keep acceptance criteria in the same record or linked specification reference so the reviewer can confirm the decision without searching elsewhere.
What this template typically catches
Issues teams running this template most often surface in practice:
Common use cases
Frequently asked questions
What is this template used for?
This template is used to record modulus of rupture test results for brick tested under ASTM C67. It captures the sample identity, test setup, specimen measurements, individual results, and the final acceptance decision. It is meant for quality verification, incoming inspection, product qualification, and lot release decisions.
Who should complete the log?
A trained lab technician, quality inspector, or materials testing technician should complete it. The person recording results should understand the test setup, specimen handling, and how to identify anomalies such as pre-test cracks or support misalignment. A reviewer or supervisor should sign off when the results affect release or disposition.
How often should this log be used?
Use it every time a brick sample is tested for modulus of rupture, whether the test is part of routine quality control, supplier verification, or a qualification program. It is especially useful when each lot needs traceable documentation. If your specification requires multiple specimens per lot, complete one record set for each test event.
Does this template replace ASTM C67?
No. The template is a recordkeeping tool, not the test method itself. ASTM C67 still governs how the test is performed, including specimen preparation, loading, and result calculation. This log helps you document that the test was run consistently and that the results were reviewed against your acceptance criteria.
What are the most common mistakes when using this log?
Common mistakes include leaving out the sample ID or lot number, failing to record the span and loading configuration, and not noting specimen damage before testing. Another frequent issue is recording only the average result and omitting the lowest individual value. Those gaps make it harder to defend a release decision or investigate a non-conformance later.
How should failed or borderline results be handled?
If a result falls below the acceptance criterion or looks questionable, document the non-conformance and select a disposition such as hold, re-test, reject, or engineering review. Record the anomaly clearly, including any specimen failure during loading or unusual break behavior. Do not overwrite or hide the original result; preserve the traceable test record.
Can this template be customized for different brick products?
Yes. You can adapt the product designation field, acceptance criteria, and disposition options to match your brick type, supplier requirements, or internal quality plan. Many teams also add fields for project name, plant location, kiln batch, or customer specification reference. Keep the ASTM C67 reference intact if the test method remains the same.
How does this log fit into a quality system?
It supports traceability and objective evidence within a quality management system, including ISO 9001-style control of inspection records. It also helps standardize review of test data so acceptance decisions are based on documented criteria rather than ad hoc judgment. If your organization uses supplier scorecards or lot traceability, this log can feed those workflows.
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