The assessment of degree of cementation in weakly to moderately cemented sands by the static cone penetrometer

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

In this thesis, the effect of degree of cementation on a selected local dune sand has been studied by using the static cone penetromter. Artificially cemented sands were prepared in the laboratory at different relative densities, different cure periods and different amounts of cement. The two cementing agents used were portland cement and calcium carbonate. The variation of cone resistance and skin resistance versus penetration depth were determined for all test samples. Also, the effect of each variable on the friction ratio defined as the ratio of skin resistance to cone resistance (fs/qc) were also assessed. The results have shown that the addition of a cementing agent to a wind blown sand increases penetration resistance. On the other hand the penetration resistance was found to increase with relative density and cure time. The results also show that long time curing is essential for cementation development especially when calcium carbonate is used as a cementing agent. A limited triaxial test program conducted on cemented sand samples extracted from cemented specimens tested by the penetometer have shown that peak and residual strengths increase with the increasing relative density, cement content and confining pressure. Attempts made to estimate cone resistance (qc) from known bearing capacity formulae based on O' p and C' p determined from triaxial test program fell considerably below measured cone resistance values at comparable densities and percent cement

روابط وملفات

التعريف والنوع

رقم الوثيقة

05ef9414-66a3-47ab-8ae9-afab9504271d

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

945340_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"Nabil Muhammad Abdallah Al-Joulani ","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

The assessment of degree of cementation in weakly to moderately cemented sands by the static cone penetrometer

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإعداد

Nabil Muhammad Abdallah Al-Joulani

الاقتباسات الببليوغرافية