| 温度和激发剂浓度对碱激发矿渣净浆流变特性的影响 |
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| 引用本文： | 陶俊,唐建辉,李平,白银,刘健,温东辉. 温度和激发剂浓度对碱激发矿渣净浆流变特性的影响[J]. 硅酸盐通报, 2021, 40(10): 3442-3449 |
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| 作者姓名： | 陶俊 唐建辉 李平 白银 刘健 温东辉 |
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| 作者单位： | 河海大学土木与交通学院,南京210098;南京水利科学研究院,南京210029;中国电建市政建设集团有限公司,天津300384 |
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| 基金项目： | 国家自然科学基金(41977240);国家重点研发计划(2020YFC1511902) |
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| 摘 要： | 为了获得温度和激发剂浓度对碱激发矿渣净浆流变特性的影响,以NaOH为激发剂,S95粒化高炉矿渣为被激发组分,探讨了不同激发剂浓度(1 mol/L、2 mol/L和3 mol/L)和温度(20 ℃、30 ℃和40 ℃)下矿渣净浆在凝结硬化过程中屈服应力和表观黏度的变化特征。结果表明:以NaOH为激发剂的矿渣净浆表现出非牛顿体特征,屈服应力的发展符合Bingham流体模型。激发剂浓度和温度越高,碱激发矿渣净浆的屈服应力发展越快,并且屈服应力平稳期和增长期时长均随激发剂浓度和的提高而缩短;表观黏度时变模型可通过η=η0+e-btn表示,且初始表观黏度η0、b和n值均随温度和激发剂浓度的提高而提高。
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| 关 键 词： | 碱激发矿渣 温度 激发剂浓度 流变特性 屈服应力 时变模型 |
| 收稿时间： | 2021-04-25 |
Effects of Temperature and Activator Concentration on Rheological Properties of Alkali Activated Slag Paste |
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| TAO Jun,TANG Jianhui,LI Ping,BAI Yin,LIU Jian,WEN Donghui. Effects of Temperature and Activator Concentration on Rheological Properties of Alkali Activated Slag Paste[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(10): 3442-3449 |
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| Authors: | TAO Jun TANG Jianhui LI Ping BAI Yin LIU Jian WEN Donghui |
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| Affiliation: | 1. College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China; 2. Nanjing Hydraulic Research Institute,Nanjing 210029, China; 3. Stecol Corporation, Tianjin 300384, China |
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| Abstract: | In order to obtain the effects of temperature and activator concentration on the rheological properties of alkali activated slag paste, NaOH was used as the activator and S95 granulated blast furnace slag was used as the activated component. The variation characteristics of yield stress and apparent viscosity of slag paste during setting and hardening were discussed at different activator concentrations (1 mol/L, 2 mol/L and 3 mol/L) and temperatures (20 ℃, 30 ℃ and 40 ℃). The results show that the slag paste with NaOH as the activator shows non-Newtonian characteristy, and the yield stress development conforms to the Bingham fluid model. The higher the concentration and temperature of the activator, the faster the alkali activated slag paste yield stress develops, but the duration of the yield stress stability period and growth period are shortened with the increase of the concentration and temperature of the activator. The time-varying model of apparent viscosity can be represented by η=η0+e-btn, and the initial apparent viscosity η0, b and n values all increase with the increase of temperature and the concentration of activator. |
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| Keywords: | alkali activated slag temperature activator concentration rheological property yield stress time varying model |
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