doi:10.21123/bsj.2016.13.4.0702

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Publication Date

Sun Dec 04 2016

Journal Name

Baghdad Science Journal

Volume

13

Issue Number

4

DOI

10.21123/bsj.2016.13.4.0702

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Measurement of Uranium Concentrations in soil of some regions in south east of Baghdad using nuclear track detector (CR-39)

"Soil –Uranium - track detector CR-39"

Nidhala H.K.

Hala

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???? ?? ??? ????? ???? ?????? ?????????? ????? ??????? ???? ?????? ????? ??? ??? ????? ?? ???? ??? ????? ????? ???? ????? ????? ?? 0-3cm, 10cm, 20cm, 30cm, 40cm ???????? ????? ?? ???? ????? ???????? ?? ???? ????? ?????? CR-39??????? ?? ??? ??? ?????????? ???????????? ???????? ???? n.cm-2.s-1 5 x 103?? ?????? ?????????? Am241- Be??? ???? ??????? ????????? ??? ?? ???? ????? ?????????? ??? ?? ????? ??????? ?????? 0.881±0.086??? ?? ??????? ????? ??? ????? ??? ?? ????? ????? ??? ???????? ???0.441±0.036 ??? ?? ???????

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Publication Date

Mon Aug 27 2018

Journal Name

Al-khwarizmi Engineering Journal

Experimental Study on Doweled Expansion Joints on Behavior for Plain Concrete Pavement System

Steel dowel bars

jointed plain concrete pavement

load-deflection behavior

subgrade soil.

Zainab Ahmed

Mohammed Hashim

Nabaa Sattar

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This paper deals with load-deflection behavior the jointed plain concrete pavement system using steel dowel bars as a mechanism to transmit load across the expansion joints. Experimentally, four models of the jointed plain concrete pavement system were made, each model consists of two slabs of plain concrete that connected together across expansion by two dowel bars and the concrete slab were supported by the subgrade soil. Two variables were dealt with, the first is diameter of dowel bar (12, 16 and 20 mm) and the second is type of the subgrade soil, two types of soil were used which classified according to the (AASHTO): Type I (A-6) and type II (A-7-6). Experimental results showed that increasing dowel bar diameter from 12 mm to 20 mm

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