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A Concrete Strength Testing Technician is an individual who has demonstrated the knowledge and ability to properly perform, record, and report the results of four basic laboratory procedures related to the determination of concrete compressive and flexural strength. According to section 19.2.1.3 of ACI 318-19 the specified compressive strength shall be based on the 28-day test results unless otherwise specified in the construction documents. 3- or 7-day test results are used to monitor early strength gain, especially when high early-strength concrete is used. concrete strength test results. Procedures described are applicable to the compressive strength test results required by ACI 301, ACI 318, and similar specifications and codes. Statistical concepts described are applicable for the analysis of other common concrete test results, including flexural The test represents the best available estimate for the sample strength. 6.4-Additional test requirementsNormally, potential compressive strength and variability of concrete are based on test results using cylinders that have been sampled, molded, and standard cured in accordance with ASTM C31/C31M until the specified test age, which is concrete strength test results. Procedures described are applicable to the compressive strength test results required by ACI 301, ACI 318, and similar specifications and codes. Statistical concepts described are applicable for the analysis of other common concrete test results, including flexural
Concrete Strength Testing Technician
Standards for 7-day and 28-day strength test results
Guide to Evaluation of Strength Test Results of Concrete
(PDF) ACI 214R-11 Guide to Evaluation of Strength Test
ACI 214R-11 Guide to Evaluation of Strength Test Results