Improvement of CBR of gypsum subgrade soil by cement kiln dust and granulated blast-furnace slag

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY

Open Engineering Pub Date : 2023-01-01 DOI:10.1515/eng-2022-0397

Asaad Mohammed Baqir Al-Gharrawi, Tawfek Sheer Ali, A. K. Alzerjawi, M. K. Fakhraldin, H. A. Abdul-Husain

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引用次数: 0

Abstract

Abstract Most construction projects face the problem of a high percentage of gypsum in the soil. To get rid of the unwanted effects of gypsum, which lead to the dissolution of gypsum in the presence of water and the settlement of the foundations of buildings and subsoil of roads, the researchers used several materials that can be added to the soil to improve its properties in resisting loads. This research presents a study of the effect of adding cement kiln dust (CKD) and ground-granulated blast-furnace slag (GGBS) on the California Bearing ratio (CBR) of gypsum sandy soil. The percentages of 2.5, 5, 7.5, and 10% of additives by the weight of the soil sample were collected, and CBR tests were performed on dry and soaked samples. The main results showed that the ideal CKD ratio, which improves the CBR soil in a dry state, is 5% and in a soaked condition is 7.5%. Also, CBR in dry and soaked states increases slightly when the GGBS percentage increases reaching 10%. The use of GGBS gives an increment in CBR, which is around 1.6 times in a dry condition and 4 times in a soaked state.

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水泥窑粉尘和矿渣颗粒改善石膏路基土的CBR

大多数建筑工程都面临着土壤中石膏含量过高的问题。为了消除石膏的不良影响，即石膏在有水的情况下会溶解，导致建筑物地基和道路底土的沉降，研究人员使用了几种可以添加到土壤中的材料来提高其抗负荷性能。研究了水泥窑灰(CKD)和磨粒高炉渣(GGBS)对石膏砂土加州承载比(CBR)的影响。收集土样重量的2.5%、5%、7.5%和10%的添加剂百分比，并对干样和浸渍样进行CBR试验。主要结果表明，在干燥状态下，理想的CKD比为5%，在浸水状态下，理想的CKD比为7.5%。当GGBS百分比增加到10%时，干态和浸水状态下的CBR略有增加。使用GGBS使CBR增加，在干燥条件下增加约1.6倍，在浸泡状态下增加4倍。

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来源期刊

Open Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

30 weeks

期刊介绍： Open Engineering publishes research results of wide interest in emerging interdisciplinary and traditional engineering fields, including: electrical and computer engineering, civil and environmental engineering, mechanical and aerospace engineering, material science and engineering. The journal is designed to facilitate the exchange of innovative and interdisciplinary ideas between researchers from different countries. Open Engineering is a peer-reviewed, English language journal. Researchers from non-English speaking regions are provided with free language correction by scientists who are native speakers. Additionally, each published article is widely promoted to researchers working in the same field.