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探讨了高烧失量（１２．８％）粉煤灰对砂浆强度的影响，用不同掺量的粉煤灰做了两组实验，测试结果表明：粉煤灰砂浆的用水量随着粉煤灰掺量的增加而增加；在蒸养后，粉煤灰砂浆试块的抗压和抗折强度比无粉煤灰试块有较大的提高；当粉煤灰掺量占水泥量的３０％时，其抗压和抗折强度最高；在标养２８ｄ后，粉煤灰掺量大于３０％的砂浆试块抗压和抗折强度比无粉煤灰试块有所降低。
The effects of fly ash with high ignition loss (12.8%) on the strength of mortar were discussed. Two sets of experiments were carried out with fly ash with different contents. The test results showed that: the water consumption of fly ash mortar followed fly ash Increase in the amount of addition; After steaming, the compressive strength and flexural strength of the fly ash mortar block have been greatly improved compared with no fly ash test block; When the fly ash content accounts for 30% of the cement volume At the same time, the compressive strength and flexural strength were the highest. After 28 days of standard cultivation, the compressive strength and flexural strength of mortar specimens with fly ash content greater than 30% were lower than those without fly ash specimens.