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磷渣的改性及其在混凝土中的应用研究
Study on Modification of Phosphorus Slag and Its Application in Concrete
2023年第2期
磷渣;辅助胶凝材料;凝结时间;活性;混凝土性能
Phosphorus slag; Auxiliary cementitious material; Setting time; Activity; Concrete performance
2023年第2期
10.19761/j.1000-4637.2023.02.079.05
彭文彬,张荣华,崔贺龙
四川华西绿舍建材有限公司,四川 成都 610051

彭文彬,张荣华,崔贺龙

彭文彬,张荣华,崔贺龙.磷渣的改性及其在混凝土中的应用研究[J].混凝土与水泥制品,2023(2):79-83.

PENG W B,ZHANG R H,CUI H L.Study on Modification of Phosphorus Slag and Its Application in Concrete[J].China Concrete and Cement Products,2023(2):79-83.

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摘   要:研究了单掺化学试剂(甲酸钙、碳酸钠、硫酸钠、石灰)、单掺固硫灰(10%、20%、30%)、复掺固硫灰与甲酸钙对磷渣性能的影响,在此基础上,制备了改性磷渣基辅助胶凝材料,并研究了其对混凝土工作性、力学性能和耐久性能的影响。结果表明:相比单掺其他化学试剂,单掺3%甲酸钙对磷渣水泥凝结时间的改善效果最好;单掺固硫灰时,随着固硫灰掺量的增加,磷渣水泥的凝结时间呈降低趋势;复掺固硫灰与甲酸钙时,综合考虑凝结时间、流动性、活性,复掺20%固硫灰与2%甲酸钙对磷渣的改性效果最好;制备的改性磷渣基辅助胶凝材料可替代常用辅助胶凝材料(矿粉、粉煤灰等)制备混凝土。 Abstract: The effects of single addition of chemical reagents (calcium formate, sodium carbonate, sodium sulfate, lime), single addition of circulating fluidized bed ash (10%, 20%, 30%), multiple addition of circulating fluidized bed ash and calcium formate on the properties of phosphorus slag were studied. On this basis, the modified phosphorus slag based auxiliary cementitious materials were prepared, and the effects of phosphorus slag based auxiliary cementitious materials on the workability, mechanical properties and durability of concrete were studied. The results show that the setting time of phosphorous slag cement is improved better by adding 3% calcium formate alone than by adding other chemical reagents alone. The setting time of phosphorous slag cement decreases with the increase of circulating fluidized bed ash content when the circulating fluidized bed ash is added only. When mixed with circulating fluidized bed ash and calcium formate, considering the setting time, fluidity and activity, mixing 20% circulating fluidized bed ash and 2% calcium formate has the best modification effect on phosphorus slag. The prepared modified phosphorus slag based auxiliary cementitious materials can replace the common auxiliary cementitious materials (mineral powder, fly ash, etc.) to prepare concrete.
英文名 : Study on Modification of Phosphorus Slag and Its Application in Concrete
刊期 : 2023年第2期
关键词 : 磷渣;辅助胶凝材料;凝结时间;活性;混凝土性能
Key words : Phosphorus slag; Auxiliary cementitious material; Setting time; Activity; Concrete performance
刊期 : 2023年第2期
DOI : 10.19761/j.1000-4637.2023.02.079.05
文章编号 :
基金项目 :
作者 : 彭文彬,张荣华,崔贺龙
单位 : 四川华西绿舍建材有限公司,四川 成都 610051

彭文彬,张荣华,崔贺龙

彭文彬,张荣华,崔贺龙.磷渣的改性及其在混凝土中的应用研究[J].混凝土与水泥制品,2023(2):79-83.

PENG W B,ZHANG R H,CUI H L.Study on Modification of Phosphorus Slag and Its Application in Concrete[J].China Concrete and Cement Products,2023(2):79-83.

摘要
参数
结论
参考文献
引用本文

摘   要:研究了单掺化学试剂(甲酸钙、碳酸钠、硫酸钠、石灰)、单掺固硫灰(10%、20%、30%)、复掺固硫灰与甲酸钙对磷渣性能的影响,在此基础上,制备了改性磷渣基辅助胶凝材料,并研究了其对混凝土工作性、力学性能和耐久性能的影响。结果表明:相比单掺其他化学试剂,单掺3%甲酸钙对磷渣水泥凝结时间的改善效果最好;单掺固硫灰时,随着固硫灰掺量的增加,磷渣水泥的凝结时间呈降低趋势;复掺固硫灰与甲酸钙时,综合考虑凝结时间、流动性、活性,复掺20%固硫灰与2%甲酸钙对磷渣的改性效果最好;制备的改性磷渣基辅助胶凝材料可替代常用辅助胶凝材料(矿粉、粉煤灰等)制备混凝土。

Abstract: The effects of single addition of chemical reagents (calcium formate, sodium carbonate, sodium sulfate, lime), single addition of circulating fluidized bed ash (10%, 20%, 30%), multiple addition of circulating fluidized bed ash and calcium formate on the properties of phosphorus slag were studied. On this basis, the modified phosphorus slag based auxiliary cementitious materials were prepared, and the effects of phosphorus slag based auxiliary cementitious materials on the workability, mechanical properties and durability of concrete were studied. The results show that the setting time of phosphorous slag cement is improved better by adding 3% calcium formate alone than by adding other chemical reagents alone. The setting time of phosphorous slag cement decreases with the increase of circulating fluidized bed ash content when the circulating fluidized bed ash is added only. When mixed with circulating fluidized bed ash and calcium formate, considering the setting time, fluidity and activity, mixing 20% circulating fluidized bed ash and 2% calcium formate has the best modification effect on phosphorus slag. The prepared modified phosphorus slag based auxiliary cementitious materials can replace the common auxiliary cementitious materials (mineral powder, fly ash, etc.) to prepare concrete.

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(1)与硫酸钠、石灰相比,单掺甲酸钙、碳酸钠对磷渣水泥凝结时间的改善效果较好,其中,单掺3%甲酸钙对磷渣水泥凝结时间的改善效果最好。
(2)单掺固硫灰时,随着固硫灰掺量的增加,磷渣水泥的凝结时间呈降低趋势。
(3)复掺固硫灰与甲酸钙时,综合考虑凝结时间、流动性、活性,复掺20%固硫灰与2%甲酸钙对磷渣的改性效果最好,此时,改性磷渣的流动度比为97%、28 d活性指数为95%,满足JG/T 486—2015中Ⅲ级复合矿物掺合料的要求(流动度比≥95%、28 d活性指数≥70%)。
(4)本文制备的2种改性磷渣基辅助胶凝材料产品J1、J2方便实际生产应用。

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[5] 廖建勋,李军,卢忠远.磷渣-粉煤灰复合辅助性胶凝材料性能研究[J].混凝土与水泥制品,2016(2):86-90. 
[6] 包明,吴雄,杨文,等.黄磷渣改性对水泥复合胶凝材料性能的影响[J].矿产综合利用,2019(4):122-125,97.
[7] 徐迅,宋晓岚,卢忠远,等.磷渣对混凝土性能影响的研究[J].混凝土,2010(3):95-99.
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[9] 苏泽淳,曾三海,郑正旗,等.超细磷渣粉对水泥性能的影响[J].硅酸盐通报,2020,39(8):2536-2541.
[10] 张惠忠.夏特水电站水工混凝土抗硫酸盐侵蚀耐久性试验研究[J].西南民族大学学报(自然科学版),2020,46(4):415-422.
[11] 郭成洲.氟、磷对硅酸盐水泥熟料矿物水化过程影响机理研究[D].武汉:武汉理工大学,2012.
[12] 郝晋高.磷渣中磷和氟对硅酸盐水泥的水化影响机理[D].武汉:武汉理工大学,2010.
[13] 陈霞,杨华全,石妍,等.磷渣粉水泥基复合胶凝体系的水化特性[J].建筑材料学报,2016,19(4):619-624.
[14] 程麟,盛广宏,皮艳灵.磷渣对硅酸盐水泥凝结时间的影响及机理[J].南京工业大学学报(自然科学版),2004(5):5-8,24.
[15] 廖建勋,李军,卢忠远,等.磷渣对固硫灰性能的影响研究[J].武汉理工大学学报,2015,37(9):14-20.

彭文彬,张荣华,崔贺龙.磷渣的改性及其在混凝土中的应用研究[J].混凝土与水泥制品,2023(2):79-83.

PENG W B,ZHANG R H,CUI H L.Study on Modification of Phosphorus Slag and Its Application in Concrete[J].China Concrete and Cement Products,2023(2):79-83.

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