不同碳酸盐填料对砂浆耐久性的影响

IF 3.4 3区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Antonela Di Salvo Barsi, Gisela Cordoba, Mónica A. Trezza, Edgardo F. Irassar
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引用次数: 0

摘要

本文研究了含有不同含量的白云石或石灰石填料(0-30%(质量))的砂浆的耐久性能,以及含有白云石填料的砂浆在两年内的稳定性。测定了抗压强度、总孔隙率、毛细吸水率和氯离子迁移系数。结果表明,无论填料成分如何,随着填料含量的增加,抗压强度会降低,总孔隙率会增加,这是由于稀释效应造成的。填料含量为 20-30% 的砂浆的毛细吸水率和氯离子迁移系数显著上升。不过,白云石填料水泥的氯化物系数低于石灰石混合水泥。体积稳定性评估显示没有明显的膨胀,X 射线衍射和傅立叶变换红外分析表明形成了类似水滑石的相。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of different carbonate fillers on the durability of mortars

Effect of different carbonate fillers on the durability of mortars

This paper investigates the durability performance of mortars with varying replacement levels of dolostone or limestone filler (0–30% by mass) and the stability of mortars with dolostone filler for 2 years. Compressive strength, total porosity, capillary water absorption, and chloride migration coefficients were determined. Results show that compressive strength decreases and the total porosity increases with increasing filler content due to a dilution effect, regardless of the filler composition. The capillary water absorption and the chloride migration coefficients rise significantly for mortars with 20–30% filler. However, the dolostone filler cements have lower chloride coefficients than those with limestone blended cement. Volumetric stability assessments reveal no significant expansion, and XRD and FT-IR analyses suggest the formation of hydrotalcite-like phases.

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来源期刊
Materials and Structures
Materials and Structures 工程技术-材料科学:综合
CiteScore
6.40
自引率
7.90%
发文量
222
审稿时长
5.9 months
期刊介绍: Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.
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