1905.3.4 Materials.
BC § 1905.3.4
The type and source of the materials used in the concrete shall be identified in the proposed concrete mix design. In order for materials in field strength test records or trial mixtures to be considered the same as those proposed for use, the materials shall, at a minimum, comply with the following: 1. Cementitious materials. Cementitious materials shall be used in the same quantities for each individual component and shall be of the same type and shall be from the same source and mill. Upon request, the concrete producer shall provide mill certificates for the cementitious materials proposed for use and cementitious materials represented by the field strength test records or trial mixtures to the registered design professional of record and the department.
2.Aggregates. Coarse and fine aggregates shall be the same nominal maximum size and shall be used in the same volume for each individual component. The aggregate supplier shall attest that the aggregates proposed are not alkali-silica reactive. The aggregate supplier is permitted to rely on New York State Department of Transportation approval of the supplier's aggregate source.
3.Admixtures. Admixtures shall meet the requirements of the same admixture type in accordance with ASTM C 494 or ASTM C 260 and there shall be no change in air content or water content from the previously specified mix. Exception: Addition or removal of retarding or accelerating admixtures as described in Section 1905.3.5 is acceptable.
4.Additional testing. Differences or changes in materials that are proposed for use, not meeting the requirements of Items 1 through 3 above, shall require new testing demonstrated by either field strength test records or trial mixtures. Exception: Field changes to concrete proportions specified in Section 1905.3.5.
