Effect of CaAl Ratio on StabilizationSolidification of Lead-Contaminated Soil by Ettringite
المؤلفون المشاركون
Xiang, Lian
Zhu, Huamei
Zhou, Ruoyun
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-12-30
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
Ettringite is commonly used for the stabilization/solidification for heavy metal-contaminated soils, and its treatment effect will be influenced by Ca/Al mole ratio.
Lead-contaminated soil samples were solidified using ettringite with different Ca/Al mole ratios.
The pH value, unconfined compressive strength of solidified samples, and leaching concentration were investigated to understand the influence of Ca/Al mole ratio on properties of ettringite-solidified contaminated soils.
The microstructural characteristics of solidified contaminated soils were also explored.
The results show that lead leaching concentration decreases dramatically with increasing the content of lime and curing time.
Lead concentration drops from 49.89 mg/L to 0.19 mg/L when Ca/Al mole ratio increases from 4 : 3 to 10 : 3 at 28 days and from 36.57 mg/L to near 0 mg/L at 90 days.
In addition, the unconfined compressive strength of samples drops at first and then increases with the increase of Ca/Al mole ratio.
Besides, the pH values of solidified soil and leachate rise with the increase of content of lime.
The pH values of solidified soil increase from 9.68 to 11.34, and there is little difference between 28 days and 90 days.
However, the pH values of leachate increase from 5.56 to 8.59 at 28 days, and 90-day pH values increase from 5.65 to 9.44.
The results of SEM, XRD, and EDS tests also indicate that Ca/Al mole ratio affects the shape of ettringite, the stabilization/solidification effectiveness of contaminated soil, and the pore of solidified soil.
When Ca/Al mole ratio equals to 8 : 3, ettringite content has a substantial increase, and lead leaching concentration is lower than 5 mg/L.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Xiang, Lian& Zhu, Huamei& Zhou, Ruoyun. 2018. Effect of CaAl Ratio on StabilizationSolidification of Lead-Contaminated Soil by Ettringite. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1115863
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Xiang, Lian…[et al.]. Effect of CaAl Ratio on StabilizationSolidification of Lead-Contaminated Soil by Ettringite. Advances in Civil Engineering No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1115863
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Xiang, Lian& Zhu, Huamei& Zhou, Ruoyun. Effect of CaAl Ratio on StabilizationSolidification of Lead-Contaminated Soil by Ettringite. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1115863
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1115863
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر