地质聚合物激发剂及其激发原理

doi:10.19964/j.issn.1006-4990.2021-0211

Abstract

Abstract:

The activator plays an important role in the process of preparing geopolymers.The three types of stimulators of acid,alkali and salt and their stimulating effects were summarized firstly.By introducing the stimulating effects of common al-kali stimulators such as sodium hydroxide,potassium hydroxide and water glass,the difference in the effects of various alkali stimulators was analyzed in detail.The research progress on typical acid stimulants such as acetic acid,hydrochloric acid,sul-furic acid and phosphoric acid was described,as well as the activation ability of sulfate,silicate and aluminate as salt stimu-lants.On this basis,the advantages and disadvantages of three kinds of activators were summarized and analyzed.At the same time,by discussing the excitation principles of the three types of activators of acid,base and salt,it was further confirmed that the three types of activators had the ability to stimulate the activity of geopolymer raw materials,and could accelerate the hydration reaction process of geopolymerization system to different degrees,and significantly improved the strength of the geopolymer system.Finally,the future development of stimulants in the field of geopolymers was prospected.

Key words: geopolymer, stimulants, excitation principle, stimulating effect, hydration reaction

CLC Number:

TQ172

WANG Lei,LI Jincheng,ZHANG Xiaowei,ZHANG Dongliang,WANG Mitang. Geopolymer activator and its excitation principle[J]. Inorganic Chemicals Industry, 2022, 54(2): 16-20.

Figures/Tables 5

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References 40

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激发剂	原料	抗压强度/MPa
氢氧化钠^[5]	硅灰+粉煤灰	23.89
氢氧化钾^[5]	硅灰+粉煤灰	19.26
水玻璃^[8]	矿渣	60.10
氢氧化钠^[10]	煤矸石	21.27
氢氧化钠^[11]	粉煤灰	43.00
氢氧化钠+水玻璃^[12]	粉煤灰	109.84
氢氧化钠+水玻璃^[13]	粉煤灰+煤矸石	58.00

激发剂	原料	抗压强度/MPa
磷酸^[16]	偏高岭土	93.80
磷酸二氢铝^[17]	偏高岭土	53.07
磷酸^[18]	偏高岭土	166.73
乙酸^[20]	水泥	57.92
硫酸^[20]	水泥	54.67
盐酸^[23]	水泥	56.00
磷酸^[24]	硅铝酸盐	78.40

激发剂	原料	抗压强度/MPa
明矾^[27]	水泥熟料	34.00
硫酸钙^[28]	矿渣+石灰石	20.00
硫酸钠^[29]	粉煤灰+矿渣	25.80
硫酸钙^[30]	粉煤灰+水泥	60.50
氯化钙^[30]	粉煤灰+水泥	61.20
硅酸盐^[31]	沸石	43.00

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Inorganic Acid-Base-Salt Committee of CIESC

Geopolymer activator and its excitation principle

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