Conquisition Of Concrete Pre Mixed F C = 210 Kg/Cm2 With Ip Type Cement Added H7 - Pre -Mixed Concrete Acquisition F C = 210 Kg/Cm2 With Ip Type Cement Added H7 For The Work Improvement Of The Educational Service Of The Initial Level Of The I.E. 356 Of The Cerrillos Santa Fortunata Neighborhood Board Sector Cerrillos Of The Samegua District Mariscal Nieto Moquegua