Prestressed simbi zvigadzirwa akaita kufambira mberi kukuru kubva 1950s yezana remakore rapfuura, pane maviri makuru mapoinzi mugwaro rekuvandudza kwayo. Chekutanga, kusimba kwechinyorwa kunowedzera zvishoma nezvishoma, zvekuti zvakaderedza saizi uye huremu hwezvakaremerwa zvikamu, zvakatodzikisa mutengo wepurojekiti; Chechipiri, pahwaro hwekuvandudza simba, isu tinofanirwa kutarisisa kukudziridzwa kwezvinhu zvine yakakwira anti-corrosion performance, kuitira kuti tivandudze kusimba kwe prestressed simbi zvikamu uye kuchengetedza mari yekuchengetedza.
