durable concrete mix. Some basic mixing ratios for concrete are 1:2:3 combine all of the dry ingredients and then add water slowly until the concrete is smooth.网页To make this mix 3 parts sand (aggregates if making concrete)Start $120 Alias: Towable Mixer; Industrial Mixer; Grout Mixer; Pan Mixer; Mini Mixer; Cement Mixer Get quote start from $120 What is stirrup bender Building and construction industries can use this machine in a wide range of ways.网页Radiation-proof mortar is made by mixing barite powder and barite sand into cement mortar. Its mix proportion is : cement : barite powder : barite sand = 1 : 0.25 : (4~5). It can resist X-ray. If borax and boric acid are mixed into the cement mortar,