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老化和养护温度对含石灰石 quarry 粉尘和工业花岗岩污泥的砂浆抗压强度的影响。 注:原文中“quarry”疑有误,可能是“crushed”(破碎的),若为“crushed”,译文为“老化和养护温度对含石灰石破碎粉尘和工业花岗岩污泥的砂浆抗压强度的影响” 。

Aging and Curing Temperature Effects on Compressive Strength of Mortar Containing Lime Stone Quarry Dust and Industrial Granite Sludge.

作者信息

Amin Muhammad Nasir, Khan Kaffayatullah, Saleem Muhammad Umair, Khurram Nauman, Niazi Muhammad Umar Khan

机构信息

Department of Civil and Environmental Engineering, College of Engineering, King Faisal University (KFU), P.O. Box 380, Al-Hofuf, Al-Ahsa 31982, Saudi Arabia.

出版信息

Materials (Basel). 2017 Jun 11;10(6):642. doi: 10.3390/ma10060642.

DOI:10.3390/ma10060642
PMID:28772999
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5554023/
Abstract

In this study, the researchers investigated the potential use of locally available waste materials from the lime stone quarry and the granite industry as a partial replacement of cement. Quarry sites and granite industry in the eastern province of Saudi Arabia produces tons of powder wastes in the form of quarry dust (QD) and granite sludge (GS), respectively, causing serious environmental problems along with frequent dust storms in the area. According to ASTM C109, identical 50-mm3 specimens were cast throughout this study to evaluate the compressive strength development of mortars (7, 28 and 91 days) containing these waste materials. Experimental variables included different percentage replacement of cement with waste materials (GS, QD), fineness of GS, various curing temperatures (20, 40 and 60 °C as local normal and hot environmental temperatures) and curing moisture (continuously moist and partially moist followed by air curing). Finally, the results of mortar containing waste materials were compared to corresponding results of control mortar (CM) and mortar containing fly ash (FA). The test results indicated that under normal curing (20 °C, moist cured), the compressive strength of mortar containing the different percentage of waste materials (QD, GS, FA and their combinations) remained lower than that of CM at all ages. However, the compressive strength of mortar containing waste materials slightly increased with increased fineness of GS and significantly increased under high curing temperatures. It was recommended that more fineness of GS be achieved to use its high percentage replacement with cement (30% or more) incorporating local environmental conditions.

摘要

在本研究中,研究人员调查了利用当地石灰石采石场和花岗岩工业产生的废料作为水泥部分替代品的可能性。沙特阿拉伯东部省份的采石场和花岗岩工业分别产生大量的粉末废料,即采石场粉尘(QD)和花岗岩淤泥(GS),这不仅造成了严重的环境问题,还导致该地区频繁出现沙尘暴。根据ASTM C109标准,在本研究中浇筑了尺寸相同的50立方毫米试件,以评估含有这些废料的砂浆(7天、28天和91天)的抗压强度发展情况。实验变量包括用废料(GS、QD)替代水泥的不同百分比、GS的细度、不同的养护温度(20℃、40℃和60℃,分别代表当地正常和炎热环境温度)以及养护湿度(持续潮湿、部分潮湿后空气养护)。最后,将含有废料的砂浆的结果与对照砂浆(CM)和含有粉煤灰(FA)的砂浆的相应结果进行了比较。试验结果表明,在正常养护(20℃,潮湿养护)条件下,含有不同百分比废料(QD、GS、FA及其组合)的砂浆在所有龄期的抗压强度均低于CM。然而,含有废料的砂浆的抗压强度随着GS细度的增加而略有提高,并且在高温养护条件下显著提高。建议根据当地环境条件,进一步提高GS的细度,以便能够以较高百分比(30%或更高)替代水泥使用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/3dabd950fdd2/materials-10-00642-g010a.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/92d919df0202/materials-10-00642-g009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/f0e6dbcb1d25/materials-10-00642-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/5648653b2e4d/materials-10-00642-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/1502df2291cc/materials-10-00642-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/f3b3938baf74/materials-10-00642-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/815be739aede/materials-10-00642-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/526c4386a351/materials-10-00642-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/5e51c0065bce/materials-10-00642-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/dc0f459f926d/materials-10-00642-g008a.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5210/5554023/3dabd950fdd2/materials-10-00642-g010a.jpg

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