Makasitomala ambiri amatifunsa momwe tingagulitsire fakitale ya njerwa? Kodi makina a njerwa otsika mtengo kwambiri otani? Abwenzi ambiri chifukwa cha ndalama zochepa, koma akufuna kutsegula fakitale ya njerwa yaing'ono, koma sakudziwa zomwe angapindule nazo.
Mau oyamba a Cement and Block-Making BasicsCement ndichinthu chofunikira kwambiri pakumanga, chofunikira popanga zolimba, kuphatikiza midadada ya konkire. Kufunika kwa simenti mu block-kupanga sikungatheke, chifukwa kumatsimikizira mphamvu
Mipiringidzo ya konkriti imagwiritsidwa ntchito makamaka kudzaza mawonekedwe apamwamba a nyumbayo, chifukwa cha kupepuka kwake, kutsekereza mawu, mphamvu yabwino yotchinjiriza, ogwiritsa ntchito ambiri amakhulupirira ndi kukondedwa. Zopangira zake ndi monga mvuvu: Simenti: simenti acts a