Special-Uses-Alkali - Expanded Shale & Clay

only the material origin and definition will not apply. In addition to the requirements, metakaolinused in production must have a silicon dioxide content with a range of +/- 7% from theacceptance value and the chloride content should not be more than 0.20% as determined byAASHTO T 260 Procedure B. For gradation, a maximum of 5% retained on the #325 sieve isrequired.For metakaolin to be used, it must be shown to conform to the specifications herein by anindependent testing laboratory. The product must be on the state’s APL.3.7. North CarolinaNorth Carolina’s only provision for Class N fly ash is adherence to ASTM C 618, except that theLOI is limited to 4%. However, the state DOT has never been approached about using a Class Nfly ash. However, the product PowerPozz by Advanced Cement Technologies is on the state’sQualified Product List.3.8. OregonFly ash must conform to AASHTO M 295, Class C, F, or N. Except that LOI is limited to1.5%,shall not have a moisture content greater than 1%, and the amount retained on the #325 sieveshould not exceed 30%. For any fly ash to be placed on the Qualified Products List, a copy of theProduct Evaluation Form, a copy of the Material Safety Data Sheet (MSDS), testing results of 3different batches showing conformance to the specifications, and a copy of the specificationsheet shall be provided.3.9. PennsylvaniaFor use with Portland cement concrete, fly ash must conform to AASHTO M 295, except that theLOI is limited to 6%. If a known or potentially reactive aggregate is used, the fly ash shouldconform to the optional chemical requirements in Table 1 of AASHTO M 295, have an alkalicontent of less than 1.5%, and show a 50% reduction in mortar expansion when tested inaccordance to ASTM C 441. If the fly ash is used to reduce ASR, it should replace 15-25% ofthe total cementitious material by weight. If aggregate expansion is above 0.40%, use areplacement level of 20% fly ash of cementitious material by weight in which no more than 15%15