Construction process of the basic process
Before the start of each class, the mixer and feeding equipment to check and test operation; the use of measuring instruments to check and set pounds; proofing construction mix ratio: the raw materials used in the specifications, variety, origin, grade and quality inspection, and And check the construction with the ratio; the sand, stone moisture content to check, if any change, promptly notify the pilot to adjust the water consumption. All inspections meet the requirements, before the opening mixed with concrete.[url=http://smallroadroller.com]Small Road Roller - Shanghai Doan Machinery Technology Co.,Ltd[/url]

Metering: sand, stone Metering: loading with a trolley, the car must weigh vehicles, unloading more than make up less. A storage hopper and supporting the measurement equipment, the use of automatic or semi-automatic feeding, the need to adjust the closing amount of advance Doumen to ensure accurate measurement. Sand, stone measurement of the allowable deviation should be ≤ ± 3%. B. Cement metering: When using bagged cement for mixing, the weight of each bag should be checked for 10 batches of cement and the average actual weight per bag shall be measured. The amount of sand, stone, water and other materials shall be adjusted according to the weight of the actual cement of each bag, and the construction proportion of each signed concrete shall be re-determined according to the proportion of the proportion. Mixing with bulk cement, should be accurate measurement of each plate. Allowable deviation of cement metering should be ≤ ± 2%. C. Admixture batching: For powder admixtures and mixes, should be used for each of the materials used in the construction mix, the admixture and mixture in advance in the warehouse for storage, and small package shipped to the mixing Location Reserved. Liquid admixture to be used with the stirring, and use a hydrometer to check its concentration, the amount of barrel measurement. Admixtures, mixture of the measurement of the allowable deviation should be ≤ ± 2%. D. Water Metering: Water must be disc metering, the allowable deviation should be ≤ ± 2%.
On the scene: mixing concrete, usually a good measurement of raw materials first gathered in the hopper, the hopper into the mixing tube. Water and liquid admixture after the measurement, in the feed to the mixing while Jane, directly into the mixing tube, the raw materials into the hopper in the order are as follows: When no admixture, mixture, the order of access to the hopper for the stone , Cement, sand. When mixing the mixture, the order of stone, cement, mix, sand. When mixed powder admixture, the order of stone, admixture, cement, sand or the order of stone, cement, sand, admixture. The first set of concrete mixing operation: each time to work mixing the first set of concrete, the first to add water to the mixing tube idling a few minutes, the mixing tube is fully wet, the remaining water down the net. Stir the first set, due to the mortar sticking cylinder wall loss, therefore, the amount of stone should be halved with the mix. Starting from the second set, according to a given mix to feed.
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