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Graphene nanoplatelet for enhancement the mechanical properties and durability characteristics of alkali activated binder

机译：石墨烯纳米纳薄用于提高碱活性粘合剂的力学性能和耐久性特性

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The effects of the addition of graphene nanoplatelets (GNPs) on the microstructure, heat of hydration, mechanical properties and durability characteristics of alkali activated binders were investigated. A simple mixing process led to reasonably uniform dispersion of GNPs in the matrix, with minor agglomeration of GNPs detected via scanning electron microscopy. Tests on engineering properties indicated that the compressive strength of the alkali activated binder increased with the addition of GNPs at relatively low concentrations. Gains were also realized in the abrasion resistance and moisture sorptivity of the binder with GNPs addition. The heat of hydration investigations indicated that the addition of GNPs accelerates the hydration process and increases the amount of hydration products, especially at early ages. Scanning electron microscope investigations further indicated that GNPs could impede the development of microcracks and mitigate their propagation within matrix; indications of good bonding between the GNPs and the alkali activated matrix were also noted. (C) 2020 Elsevier Ltd. All rights reserved.
机译：研究了将石墨烯纳米片（GNPS）加入微观结构，水合热，机械性能和耐久性特性的效果。一种简单的混合过程导致基质中GNP的合理均匀分散，通过扫描电子显微镜检测的GNP分解。工程性质的试验表明，碱活性粘合剂的抗压强度随着相对低浓度的加入GNP而增加。在粘合剂的耐磨性和水分吸附性中也意识到了GNPS加入的增长。水合研究的热量表明，添加GNP加速了水合过程并增加了水合产物的量，特别是在早期的年龄。扫描电子显微镜调查进一步表明GNP可能会妨碍微裂纹的发展并减轻基质内的传播;还注意到GNP与碱活化基质之间良好键合的适应症。 （c）2020 elestvier有限公司保留所有权利。

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