أنتاج بلاطات خرسانية عالية المقاومة بأستخدام برادة الحديد المحلية كبديل جزئي عن السمنت بإضافة الملدن S.B.R.

Abstract

This research includes production ties with high strength concrete by using iron filing . Resulting from remnants of refrigerator for laboratories civil , which passing from sieve (4.75)mm partial substitute for cement which was used four mixture of three ties of concret mixture (B=25%), miture (C=50%) ,mixture (D= 75%). As replacement by weight of cement..and compare with reference (Mix.A) . and the labrotatory test sample as flowing:- 1-Fresh concrete was examind by precipitation of concret and the results as flowing (Mix.B = 95 mm) , (Mix.C=90mm),(mixD=85mm) compare with (Mix.A) which gives (100mm) .2-Hardend concret was examend with comprsive strength cupice modelse (10*10*10)cm , the (Mix.B =48 mpa), (mix.C =43.5 mpa),(mix.D =39.25Mpa) compare with reference mixture (Mix.A) give (45 mpa) at (28 day).The strength increase at late time (60day), is reached (59.5Mpa) for mix .B , the Mix.C=51.25 Mpa , the Mix.D=40.15 compare with reference sample (A=52.45 Mpa). when modulus of rupture for ties with dimension (40*40*5)cm of (Mix.B=5.5 Mpa) , (Mix.C=4.5 Mpa)m(Mix.D=3.5 Mpa) compare with reference Mix (A) =(4.75 Mpa) at edge 28 day.3-The modulus of rupture for ties (40*40*5)cm shows the results samples mixture B=35Mpa lest mixture C= 45Mpa lest mixture D=3.25Mpa compare with reference (A=4.75)Mpa at age (28)days .All of these tests to increasing result with the percentage (50%) but decrease percentage (75%) because of reducing of cohesive of the steel mixture concrete these crush steel concrete have stiffness and hardness but have not cohesive.