Home xin What are the main technical requirements for common cement? How to distinguish between scrap and nonconforming products

What are the main technical requirements for common cement? How to distinguish between scrap and nonconforming products

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waste cement refers to the cement that cannot be hardened or basically cannot be hardened, and unqualified cement is often the original qualified cement, which cannot reach the original index after hardening due to improper storage. This kind of cement can be degraded
according to the current specification, all cement with free magnesium oxide, sulfur trioxide, which can be seen during initial setting and any index of stability does not meet the relevant provisions are waste cement. When the fineness, final setting time and loss on ignition of ordinary portland cement do not meet the technical requirements listed in the cement standard, or the mixing amount of mixed materials exceeds the maximum limit and the strength is lower than the indexes specified in the commodity strength grade, it is called unqualified products. If the cement type, strength grade, factory name and factory number in the cement packaging mark are incomplete, they also belong to unqualified products.

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