ACI 546.4R-2020 Guide for Jobsite Quality Control and Quality Assurance of Cementitious Packaged Materials.
5.2—Verification of material properties
Tests can be conducted to verify the test results indicated on the technical data sheets. If the material manufacturer uses modified or in-house test methods, details of the modification or protocols should be obtained from the manufacturer so that the results may be verified.
Contractors should perform trials and mockups that demonstrate handling of materials, weighing of materials, use of equipment and mixing, material testing, placement, finishing, curing, and other steps in accordance with the contract documents. The trials and mockups of the mixed materials should be tested to demonstrate conformance with the contract documents. Surface preparation, mixing, placement. finishing, and curing should he performed in accordance with the contract documents. Typically, a mockup is accepted if the inspection and testing of the packaged material meets the requirements of the contract documents. A mockup log should be kept that documents the materials, mixing procedures, tests, environmental conditions, and other conditions. Conduct another mockup and additional testing if the properties of the mixed materials appear to change during use, or if either the mixed material testing or the inspection and testing of the cured material indicate noncompliance with the requirements of the contract documents. Placement should not begin until acceptable test results are obtained for the packaged material.
The weight tolerances of the packaged materials can have an impact on the use and performance of the material and should he taken into account in the quality control and quality assurance testing. As part of testing, a representative number of the packaged materials should be weighed to verify that the package weight is within the industry accepted tolerances (Fig. 4.Xa and 5.4). ASThI C928-13. Section 14.1.6, states “The contents of any container shall not vary by more than 2% from the weight stated in the markings. The average weight of tilled containers in a lot shall he not less than the weight stated in the markings.” Although ASTM (928-l3 is intended for rapid setting materials, the 2 percent variance for weight is reasonable for most packaged materials. If the weight of the packaged material is out of 2 percent tolerance, contact the manufacturer for recommendations. In addition. NIST Handbook 133 may be referenced as a guide for the compliance testing of net content statements on the packaged material.ACI 546.4R pdf download.