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几年来,我厂在不断加强质量控制中,除了努力提高熟料质量外,对于出厂水泥28天耐压强度,一般都是根据3天耐压强度来推算。但由于3天耐压强度与28天耐压强度之間的关系比較間接,同时,由3天耐压强度到得出28天耐压强度实际結果的时間較长,一旦3～28天之間耐压强度增进规律发生变化,推算出的28天强度就不准确,容易发生质量事故。因此,由3天耐压强度直接估算28天耐压强度是有一定缺点的。根据有关資料介紹和我們的摸索,水泥7天耐压强度与28天耐压强度之間的关系比較直接,可以用7天耐压强度比較准确地推算出28天耐压强度。虽然7天耐压强度与3天耐压强度之間的关系也比較間接,
Over the past few years, our factory has continuously strengthened its quality control. In addition to efforts to improve the quality of clinker, the 28-day compressive strength of cement delivered from the factory is generally calculated based on the three-day compressive strength. However, because the relationship between the compressive strength of 3 days and the compressive strength of 28 days is relatively indirect, at the same time, from the 3 days compressive strength to the actual result of 28 days of compressive strength, the time is longer, once 3 to 28 days The regularity of the increase in the compressive strength between the two sides is inaccurate, and the calculated 28-day strength is inaccurate and is prone to quality accidents. Therefore, a direct estimation of the 28-day compressive strength from the 3-day compressive strength has certain disadvantages. According to the relevant information and our exploration, the relationship between the 7-day compressive strength of cement and the 28-day compressive strength is relatively straightforward, and the 28-day compressive strength can be accurately calculated from the 7-day compressive strength. Although the relationship between the 7-day compressive strength and the 3-day compressive strength is also relatively indirect,