Mechanical Properties of Self-Compacted Concrete

• Published in: Tikrit journal of engineering sciences 2016-07, Vol.23 (1), p.40-52
• Main Authors: Ammar Saleem Khazaal, Alyaa Abbas Ali, Assim Mohammed Lateef
• Format: Article
• Language: English
• Subjects: Self-Compacted Concrete, Mechanical Properties, Pulse Velocity, Compressive Strength
• ISSN: 1813-162X; 2312-7589
• DOI: 10.25130/tjes.v23i1.549

In this research, trial mixes were conducted according to Self -Compacted Concrete (SCC) specifications, a mix that gave a higher compressive strength to the age of seven days has been selected. Then after selecting the appropriate mix, concrete samples had poured and were distributed into five groups; each group  consists  of  six  cubes,  six  cylinders,  and  six  prisms.  The  samples  of  each  group  are  testing  for compressive, tensile splitting, and flexure strengths respectively for the ages of 7, 14, 28, 60, and 90 days respectively. Before of conduction of destructive tests, the samples were t ested using ultrasonic waves to determine the relationship between the concrete strength and pulse velocity and in the same way for all ages in above. Experimental results showed that, all concrete mechanical properties have improved, and the  maximum  improve  was  in  flexural  strength  followed  by  compressive  strength  and  tensile  splitting strength.  The  cube  compressive  strength  increased  according  to  (G1  at  7  days  curing)  from  34.3%  to 71.8%, the percentage of increase of tensile strength according to (G1 at  7 days curing) from 16.8% to 64.3% , modulus of rupture increased according to (G1 at 7 days curing) from 34.6% to 98.7% for ages (14, 28, 60, 90 days) respectively.  Pulls velocity increased according to (G1 at 7 days curing): For cube from 5.1% to 23.9%, for cylinder from 21.4% to 40.3%, for prisms from 7.1% to 29.2%.