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The second feeding method of concrete mixer: This feeding method is divided into pre mixed cement mortar and mixed cement paste method. Ready mixed mortar is first to make the cement, sand and water into the stirring barrel and then fully mixing the cement mortar. After they become uniform cement mortar, then add the stones into it concrete mixing plant, stirring them to become the uniform concrete. Then add the gravel, and the mixing time is about 1~1.5min. Premixed cement paste method is first to make the cement and water fully stirred into uniform cement paste, and then add the sand and stones to mix into concrete. The tests at home and abroad show that the second feeding method is compared with the first feeding method, the concrete strength can be increased by 15%, in the case of the same strength, it can save cement 15% -20%.Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:Stationary concrete batching plants,Ready mixed concrete batching plant,concrete mixing batch plant for sale,etc. We will provide you with the best product and service. A feeding method of concrete mixer: This is the most common method. Making sand, stone Mobile Concrete Mixing Plant, cement and water mixed together into a mixing barrel. In order to reduce the viscosity of cement and cement dust tank phenomenon in the feeding process of concrete mixer, first to pour sand (or stone) and then pour the cement, and then poured into the stone (or sand). That is to say egg laying type block machines, the cement is between the sand and stone. In the end, the hopper of concrete mixer will bring the dry material into the stirring barrel, and then add water to mix.