Effectiveness of cement replacing productsin stabilizing clay soils
Başlık çevirisi mevcut değil.
- Tez No: 724229
- Danışmanlar: YRD. DOÇ. DR. ABDULLAH EKİNCİ
- Tez Türü: Yüksek Lisans
- Konular: İnşaat Mühendisliği, Civil Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2019
- Dil: İngilizce
- Üniversite: European University of Lefke
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 91
Özet
Özet yok.
Özet (Çeviri)
There are many soil improvement methods. Cement stabilization is a good alternative to increase the strength properties of cohesive soils. The most utilization of these methods is cement stabilization. In order to improve the stabilization techniques and to ensure that this technique is applied to the field, a better understanding of the mechanisms for improvement is required. In this experimental study, Unconfined Compressive Strength (UCS) and Indirect Tensile Strength (ITS) tests were carried out on marine deposited clay of Cyprus, prepared by mixing different content of cement and further additives in the laboratory and the effectiveness of those additives on the strength properties of soils. In this study, unsuitable soil was treated with cement, hydrated lime, and copper slag. Unconfined Compressive Strength and Indirect Tensile Strength tests were performed in order to assess effectiveness of additives. The soil specimens used in this study have been obtained from Kyrenia region of Northern Cyprus. Specimens have been prepared in static compaction at 14, 16 and 18 kN/m2 dry density and 7, 10 and 13% cement content. Furthermore, 5% of hydrated lime and 10-20% of copper slag have been added as cement replacement. All prepared specimens have been curing at 7, 28 and 60 days. The cement ratio was firstly 1%, 3% and 5%. Samples prepared at these ratios were observed to disintegrate when water was introduced. Therefore, these ratios were not used. The Lefke Region of the Cyprus is know of being a copper mines. These mines are currently not active since 1974. The copper slags whıch are residue of copper processing are widly damped all around the region. Therefore, the reason for the use of copper slag is to prevent the damage to the environment by mixing this material in the open area of Lefke region with the rain water together with the groundwater. In addition, reducing the cement ratio will reduce carbon dioxide emissions. Density ratios were determined by the tests. The densities above this value did not fit within the mold used because the maximum density was chosen to be 1.8. Therefore, 1.8 was taken as maximum dry density. II As a result of the performed tests, it was observed that both curing day and density increase results in improvement of the unconfined and split tensile strength. Furthermore, the addition of hydrated lime to cement stabilised specimens showed the ultimate increase in strength. This observed increase in strength is due to reduction in the void ratios of hydrated lime-cement treated specimens. This is due to the encouragement of hydration process due to the presence of hydrated lime. However, the addition of copper slag to cement treated specimen reduced the strength at above 10% of copper slag content and less than 60 days of curing. Keywords; Unconfined compressive strength; Splitting tensile strength; Cement, Hydrated lime; Copper slag; Curing time; Compacted soil; Soil cement; Treated.
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