▁away ▁to ▁the ▁land fill , ▁turned ▁into ▁new ▁building ▁material ▁through ▁the ▁process ▁of ▁concrete ▁rec y cling ▁or ▁rep ur posed ▁in ▁some ▁other ▁way . ▁ ▁Mike ▁R owe , ▁host ▁of ▁D irty ▁Job s ▁on ▁the ▁Disc overy ▁Channel , ▁once ▁described ▁concrete ▁ch ipping ▁as ▁the ▁t ough est ▁job ▁he ▁ever ▁took ▁on . ▁ ▁Main ten ance ▁Ch ipping ▁requirements ▁vary ▁depending ▁on ▁a ▁variety ▁of ▁factors , ▁including ▁the ▁individual ▁c ement ▁mixing ▁tr uck ▁and ▁concrete ▁mix er , ▁the ▁concrete ▁bl ends ▁in ▁use ▁and ▁cre ws ’ ▁maintenance ▁practices . ▁Still , ▁many ▁concrete ▁ch ipping ▁companies ▁advise ▁sched uling ▁ch ipping ▁appoint ments ▁every ▁three ▁months . ▁Reg ular ▁ch ipping ▁helps ▁companies ▁avoid ▁problems ▁such ▁as ▁lower ed ▁drum ▁capacity , ▁sl ugg ish ▁mach in ery ▁and ▁break down s ▁which ▁not ▁only ▁gr ind ▁work ▁to ▁a ▁halt , ▁but ▁result ▁in ▁cost ly ▁rep airs . ▁Even ▁companies ▁which ▁use ▁chemical ▁bl ends ▁to ▁keep ▁concrete ▁bu il dup ▁at ▁bay ▁require ▁periodic ▁ch ipping , ▁though ▁on ▁a ▁slightly ▁extended ▁tim eline . ▁ ▁Saf ety ▁As ▁opposed ▁to ▁robot ically ▁controlled ▁hydro ▁ch ipping , ▁which ▁has ▁no ▁safety ▁concerns ▁commonly ▁related ▁to ▁the ▁concrete ▁ch ipping ▁industry , ▁concrete ▁ch ipping ▁by ▁human ▁teams ▁is ▁inher ently ▁dangerous ▁work . ▁Ch ipp ers ▁face ▁a ▁number ▁of ▁on - the - job ▁ha z ards , ▁including ▁but ▁not ▁limited ▁to ▁flying ▁de