脱硫石膏用作干混砂浆矿物掺合料改性剂的研究

doi:10.19698/j.cnki.1001-6171.20224087

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摘要试验研究了脱硫石膏对改性粉煤灰与矿渣粉复合掺合料的性能影响，以及含脱硫石膏“低水泥-高掺合料”干混砂浆的结构性能。试验结果显示，改性后的矿物掺合料有利于提高干混砂浆的早期和后期强度，复合矿物掺合料的掺加量可达胶凝材料总量的50%以上，脱硫石膏最佳掺加量为5%~7%；改性矿物掺合料可改善砂浆内部结构，增加无害孔数量；配制的各种砂浆性能均能满足JG/T 230 2007标准要求；与市场普通干混砂浆相比，成本下降10%以上。

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	张冠军
	李涛

关键词: 脱硫石膏干混砂浆粉煤灰矿渣粉改性剂

Abstract: The effects of desulfurized gypsum on the properties of modified fly ash and slag powder composite admixtures, and the structural properties of low-cement-high admixture dry-mixed mortar containing desulfurized gypsum were studied experimentally. The test results show that the modified mineral admixture is beneficial to improve the early and late strength of dry-mixed mortar. The addition amount is 5%~7%; the modified mineral admixture can improve the internal structure of the mortar and increase the number of harmless pores; the properties of the prepared mortar can meet the requirements of the JG/T 230 2007 standard. Compared with mixed mortar, the cost is reduced by more than 10%.

Key words: desulfurized gypsum dry mixed mortar fly ash slag powder modifier

收稿日期: 2021-11-24 修回日期: 2022-07-25 出版日期: 2022-07-25 发布日期: 2022-07-25 整期出版日期: 2022-07-25

ZTFLH:

TQ172.462

引用本文:

张冠军, 李涛. 脱硫石膏用作干混砂浆矿物掺合料改性剂的研究[J]. 水泥技术, 2022, 1(4): 87-96.
ZHANG Guanjun, LI Tao. Study on the Use of Desulfurized Gypsum as Modifier of Mineral Admixtures in Dry-mixed Mortar. Cement Technology, 2022, 1(4): 87-96.

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http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20224087 或 http://www.cemteck.com/CN/Y2022/V1/I4/87

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