Alkali-activated fly ash: Effect of thermal curing conditions on mechanical and micro structural development - Part Ⅱ

G. Kovalchuk; A. Fernandez-Jimenez; A. Palomo

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Alkali-activated fly ash: Effect of thermal curing conditions on mechanical and micro structural development - Part Ⅱ

机译：碱活化粉煤灰：热固化条件对机械和微观结构发展的影响-第二部分

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The development of mechanical strength and the mineral and microstructural characteristics of the alkali activated fly ash (AAFA), reveal the importance of the role played by the curing conditions prevailing during setting and hardening process: curing in a covered mould (CCM) at 95℃; dry curing (DC) at 150℃, or steam curing (ST) at 95℃. CCM yields the highest compressive strength (up to 102 MPa after 8 h of curing) and can be readily used in any AAFA system. DC is only recommended for NaOH-based systems (low SiO_2/Al_2O_3 ratio), since waterglass-based mixes tend to retard reaction kinetics. SC, in turn, has an intermediate effect on strength development, between CCM and DC.

机译：碱活化粉煤灰（AAFA）的机械强度以及矿物和微观结构特征的发展，揭示了固化和硬化过程中普遍存在的固化条件所起的作用的重要性：在覆盖模具（CCM）中于95℃固化;在150℃下进行干固化（DC），或在95℃下进行蒸汽固化（ST）。 CCM产生最高的抗压强度（固化8小时后高达102 MPa），可轻松用于任何AAFA系统。仅建议将直流电用于基于NaOH的系统（低SiO_2 / Al_2O_3比），因为基于水玻璃的混合物往往会阻碍反应动力学。反过来，SC对CCM和DC之间的强度发展具有中间影响。

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来源
《Fuel》 |2007年第3期|p.315-322|共8页
作者
G. Kovalchuk; A. Fernandez-Jimenez; A. Palomo;
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作者单位

V. D. Glukhovskiy Scientific Research Institute on Binders and Materials, Kyiv, Ukraine;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类燃料化学工业（总论）;热力工程、热机;
关键词
alkaline cements; alkaline activation; curing conditions;

机译：碱性水泥;碱活化;固化条件;

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Alkali-activated fly ash: Effect of thermal curing conditions on mechanical and micro structural development - Part Ⅱ

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