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Effect Of Water Content On The Strength Properties Of Kufa Limestone Quarry

Diğer Başlık: Su İçeriğinin Kufa Taşocağı Kireçtaşının Dayanım Özelliklerine Etkisi

Oluşturulma Tarihi: 06-10-2020

Niteleme Bilgileri

Tür: Tez

Alt Tür: Yüksek Lisans Tezi

Yayınlanma Durumu: Yayınlanmamış

Dosya Biçimi: PDF

Dil: İngilizce

Konu(lar): Mühendislik (Genel). İnşaat mühendisliği (General),

Yazar(lar): Al-Salih, Ali Faraooq Mohammed Salih (Yazar),

Emeği Geçen(ler): Özgenoğlu, Abdurrahim (Tez Danışmanı),


Yayın Tarihi: 07-01-2020


Dosya:
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Anahtar Kelimeler

Limestone; Water content; Kufa quarry; Uniaxial compressive strength; Brazilian test; Point load strength index; 


Özet

Water content has a negative effect on both physical and mechanical properties of rock

materials and rock masses. The influence of water on the mechanical behavior of rocks

can be problematic for the stability of rock mass in different civil and mining

structures.

The main objective of this thesis is to investigate the effect of water content on uniaxial

compressive strength and indirect tensile strength of limestone of Kufa quarry. This

thesis also relates the uniaxial compressive strength to indirect tensile strength test to

use indirect strength tests to estimate the strength of specimens as a function of degree

of saturation to use it in design and classification purposes of Kufa quarry limestone

in Iraq.

Furthermore, meaningful relationships between degree of saturation of specimens

with uniaxial compressive strength, deformability parameters, and both of point load

strength index and Brazilian test were developed.

One hundred and twenty five specimens collected from the same zone in  Kufa quarry

limestone in Iraq were prepared for some mechanical tests according to American

Society for Testing Materials (ASTM). Their physical properties were determined

(bulk density, porosity, and specific gravity) and tested under uniaxial compressive,

point load, and indirect tensile tests for different degree of saturations (0%, 25%, 50%,

75%, and fully saturated).According to the results a significant decrease was observed

in strength test results and modulus of elasticity with an increase in water content. The

maximum decreases in uniaxial compressive strength, point load strength index,

Brazilian test, average and tangent modulus of elasticity were determined as 33%,

80%, 75%, 87% and 74% respectively for fully saturated specimens.Empirical

equations developed as correlations between the uniaxial compressive strength and

tensile strength, point load strength index, and modulus of elasticity under the five

degrees of saturation. Another correlation obtained between the degree of saturation

with compressive strength, tensile strength, point load strength index, also the

modulus of elasticity. As well as a correlation between tensile strength and point load

strength index were developed. Point load strength index has a better correlation with

uniaxial compressive strength than Brazilian tensile strength. The correlation between

point load strength index and Brazilian tensile strength was not good.



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