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1- A. M. Neville , (( Properties of concrete )) , Third Edition , Pitman books Limited , London , 1982 .
2- Portland Cemcnt Association , (( Design and control of concrete Mixtures )) , Twelfth Edition, 1979.
3- L.M. James , (( concrete Technology )) , Macdonald & Evans Ltd. , 1985.
4- R.T. Kreh Sr., (( Masonry Skills )), Delmar Puplishers Inc.,1982.
5- G.E. Troxell, H. E. Davis & J.W.Kelly, ((Composition and Propeties of concrete )) , Second Edition , Mc Graw-Hill.
6- R.C.Smith , (( Matrials of Construction )) , Third Edition , Canada , 1979.
7- Dept. of the Enviroment , Building Research Establishment , (( Design of Normal Concrete Mixes )) London, PP.16-17.
8- A. M. Neville , (( Properties of Concrete )) , 4th Edition , Addison Wesley Longman Limited , London , 1997.
N )&[email protected]))=N )&)-$EED* DDJ D
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15- British Standerds Institute , (( BS 1370 : Spec for Low Host Portland Cement )) , 1979 .
16- British Standerds Institute , (( BS 410 : Spec for Test Sieves )), 1986 .
17- British Standerds Institute , (( BS 812 : Methods for Sampling and Testing of Mineral Aggregates , Sand , and Fillers )) , 1983 .
18- British Standerds Institute , (( BS 882 : Aggregates from Natural Sources for Concrete )) , 1983 .
19- British Standerds Institute , (( BS 6073 : Precast Concrete Masonry Units )) , 1981 .
)B"9^
1- American Society for Testing and Materials, (( ASTM C 187
: Standard Test Method for Normal Consistency of Hydraulic Cement )) , 1990 .
2- American Society for Testing and Materials, (( ASTM C 191 : Standard Test Method for Time of Setting Hydraulic Cement by Vicat Needle )) , 1990 .
3- American Society for Testing and Materials, (( ASTM C 403 : Test Time of Setting Mixtures by Penetration Resistance )) , 1997 .
4- American Society for Testing and Materials, (( ASTM C 151 : Standard Test Method for Autoclave Expansion of Portland Cement )) , 1990 .
5- American Society for Testing and Materials, (( ASTM C 109 : Standard Test Method for Compressive Strength of Hydraulic Cement )) , 1990 .
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6- American Society for Testing and Materials, (( ASTM C 305 : Standard Test Method for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency )) , 1990 .
7- American Society for Testing and Materials, (( ASTM C 778 : Standard Specification for Standard Sand )) , 1990 .
8- American Society for Testing and Materials (( ASTM C 611 : Spec for Wire Cloth Sieves for Testing Purposes )) , 1997 .
9- American Society for Testing and Materials, (( ASTM C 127 : Standard Test Method for Speceific and Absorption of Coarse Aggregates )) , 1985 .
10- American Society for Testing and Materials, (( ASTM C 128 : Standard Test Method for Speceific Gravity and Absorption of Fine Aggregates )) , 1985 .
11- American Society for Testing and Materials, (( ASTM C 29 : Standard Test Method for Unit Weight and Voids in
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