Setting Time, Compressive Strength and Photon Attenuation Properties of Cement Mortars Produced with Nano-SiO2

Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi Pub Date : 2023-09-18 DOI:10.53433/yyufbed.1329695

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Abstract

In this study, initial and final setting time, compressive strength and photon attenuation properties of cement mortar samples produced with 0.5%, 1%, 2%, and 4% nanoscale SiO2 addition were investigated. For this purpose, cement mortar samples were prepared and cured for 1, 2, 7, 28, and 90 days. Increases in compressive strength values were observed in the early curing ages, with a slight decrease of 3,17% and 0,33% for low nano SiO2 rates (0.5% and 1%) in later ages. In addition, these results were evaluated with Scanning Electron Microscope (SEM) images. In the samples added 4% nano-SiO2, there was a 13.3% and 9.09% reduction in the initial and final setting times, respectively. Furthermore, mass attenuation coefficients were compared for different cure ages.

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用纳米二氧化硅生产的水泥砂浆的凝结时间、抗压强度和光子衰减特性

本研究调查了添加 0.5%、1%、2% 和 4% 纳米级 SiO2 的水泥砂浆样品的初凝和终凝时间、抗压强度和光子衰减特性。为此，制备了水泥砂浆样品，并分别固化了 1、2、7、28 和 90 天。在早期固化龄期，抗压强度值有所增加，而在后期固化龄期，低纳米二氧化硅添加量（0.5% 和 1%）的抗压强度值则略有下降，降幅分别为 3.17% 和 0.33%。此外，这些结果还通过扫描电子显微镜（SEM）图像进行了评估。在添加了 4% 纳米二氧化硅的样品中，初凝时间和终凝时间分别缩短了 13.3% 和 9.09%。此外，还比较了不同固化时间的质量衰减系数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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