CAN/CSA-A362-98

1. Scope 1.1 General This Standard addresses the definition of blended hydraulic cement; its chemical and physical requirements; the tests required; the procedures for inspection and sampling; the units of measurement; and its packaging, marking, and storage. The intent of this Standard is to define the properties of the blended product; it does not include cases in which the supplementary cementing material is stored, weighed, and batched separately from the cement in the concrete mix at a concrete production facility or at a job site. 1.2 Types 1.2.1 Basic Types The four types of blended hydraulic cement addressed in this Standard are (a) Portland blast furnace slag cement (S); (b) Portland flyash cement (F); (c) Portland silica fume cement (SF); and (d) ternary blend cement. 1.2.2 Nomenclature The naming practice is as follows: TE-A\b where T = the equivalent performance to Type 10, 20, 30, 40, or 50 Portland cement; E = an indication that the cement has equivalent performance for the proterties stipulated in Table 2; A = the predominant supplementary material; and B = the secondary supplementary material, only specified in a ternary blend. Examples: 10E-S - a Portland blast furnace slag cement having equivalent performance to that of a Type 10 Portland Cement. 40E-F - a Portland flyash cement having equivalent performance to that of a type 40 Portland cement; and 50E-S\SF - a ternary blend cement having equivalent performance to that of a Type 50 Portland cement with slag being the predominant supplementary cementing material and silica fume the secondary supplementary cementing material. Note: Blended hydraulic cement may develop lower early compressive strengths than the corresponding Portland cement. This effect is more pronounced as the proportion of slag or fly ash is increased. When a Portland silica fume cement is used, experience indicates that early strengths are frequently higher than the strength of the corresponding Portland cement.