متطلبات الحصول على مقاومة عالية باستخدام الخرسانة، المعادة كتعويض جظني عن الركام الخشن باستخدام مضافات الهواء

Abstract EN

The goal behind this ressarch to receving high strength of mixture as resulting of substuite of recycle instead of source aggregate.

The ressarch including two groups production in addition to refrence mixture (A) as shawn:- 1- Mixtures without intreated air (B,C,D) with recycle concrete (25%,50%.75%) and water cement ratio (50%)with persantge mix(1:2:4).

2- Mixtures with intreated air (E,F,G) with recycle concrete (25%,50%.75%) and varying cement ratio (32%,40%,50%) with persntage mix (1:2:4) and additor (5%) Gelinoum at these mixture above.

The trsting show that:- - Mix (G) is the best result of sattelment which equal (50)mm compare with refrence mix equale (85)mm.

- Flow (80%) compare with refrence mix equale (100%).

- Compression strength at (28) days they equal (30.75)mpa compare with refrence mixequale (27.98)mpa.

- Splitting tensile strength at(28) days equale (3.62)mpa compare with refrence mix equale (3.37)mpa.

- Dry density equal (1.4) kgm/m3 compare with refrence mix equale (2.82)kgm/m3.

Though, its use to produce carptone for roads instead of intial production of ordinary Portland cement.