Show concrete silos can be put into good condition concrete silos which have softened and sloughed off on the inside due to the use of too little cement or to mis takes tales in mixing or handling the con crete can be repaired by chipping off the defective material with hammer and cold chisel soaking the concrete thoroughly several alies times crushing with a ith a cream like grouting of cement and water mater then plastering with rich cement mortar it if the defective concrete extends clear through the silo walls says a writer in the montreal herald the en tire wall can be replaced by cutting out a section at a time and replacing it with good material when these have set thoroughly the remaining parts can be replaced in the same way leakage of air through silo walls Is a common cause of moldy silage hollow tile concrete block and con crete stave silos are often coated with a cement and water wash with the idea of stopping such air leaks leals but this does little good since any cracks will open up again as soon aa as the pressure comes on the walls what Is needed Is a more elastic coating which will stretch sl ghaly |