Effect of steel slag on the mechanical behavior of surficial yellow marl of Tabriz

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-08-16 DOI:10.28927/sr.2022.071821

Hossein Soltani-Jigheh, Hamed Golmohammadi, Manouchehr Tajrostami

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引用次数: 0

Abstract

Fine-grained soils usually have low shear strength and bearing capacity and high swelling potential in the wet state, therefore, they have often to be stabilized by additives. The main objective of this study is to determine the possible effects of ground-granulated blast-furnace slag on the physical and mechanical properties of fine-grained soil. For this purpose, a number of Atterberg, compaction, California bearing ratio (CBR), unconfined compression and freeze-thaw tests were conducted on fine-grained soil. Steel slag (SS) inclusion reduced plasticity index of soil from 44% to 20% when slag content increased from 0% to 55.0%. Moreover, the slag addition improved soil CBR with maximum improvement rate in the sample consists to 55% slag. This increment in CBR was about 140% and 154% for 2.54 mm and 5.08 mm penetration respectively. In addition, slag inclusion raised soil strength with a maximum increment of 132% for clay mixed with 55% slag. Water content and volume changes in freeze-thaw cycles also decreased with increasing percentage of SS, therefore mixtures durability increased.

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钢渣对大不里士表层黄色泥灰岩力学性能的影响

细粒土通常具有较低的抗剪强度和承载力，在潮湿状态下具有较高的膨胀潜力，因此，它们通常必须通过添加剂来稳定。本研究的主要目的是确定磨细高炉矿渣对细粒土物理力学性能的可能影响。为此，对细粒土进行了大量的阿太堡、压实、加州承载比（CBR）、无侧限抗压和冻融试验。当矿渣含量从0%增加到55.0%时，钢渣（SS）夹杂使土壤的塑性指数从44%降低到20%。此外，矿渣的加入提高了土壤的CBR，最大改善率为55%。对于2.54mm和5.08mm的穿透，CBR的增量分别约为140%和154%。此外，掺入55%矿渣的粘土，掺入矿渣可提高土壤强度，最大增量为132%。冻融循环中的含水量和体积变化也随着SS百分比的增加而减少，因此混合物的耐久性增加。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.