In the present study, the influence of the use of steel microsphere in structural concrete has been observed. By ayalyzing the results of compression resistance taken after seven days of curing and performance of compression destructive tests on cylindrical test molds consisting of measured concrete with added percentages of the new aggregate (steel microsphere), which replaced one sand parcel in the traces of the concrete used. The produced concrete was experimentally dosed and identified according to the rate of building cement and percentage of microspheres in the sand of the calculated traces. In the present study, sixty-one test molds have been produced of which fifty-eight have been essayed, one selected longitudinally for analyse of it's internal structure (disposition of the aggregates) and the last two have been selected for future observations.
microspheres; concrete; structure and test
