Several Common Features Of Quality Concrete Shotcrete Machine Materials

When we use concrete Shotcrete machine work, the use of concrete have any requirements? Concrete spraying machine company believes that there’re some common in what we call--good quality concrete.
① fine aggregate. It can have a very big impact to the concrete mixture pump performance , fineness modulus is preferably 2.3-3.0, continuous gradation, wherein the particle size of the fine aggregate 0.315mm below the proportion of 20 best %.
② additives. During the pumping process, appropriate to add some water reducing agent or fly ash not only to reduce the hydration heat of mass concrete beneficial, but also very effective in improving the adhesive plastic concrete and water retention.
③ coarse aggregate. Aggregate and delivery tube diameter ratio should be 1: 3, and its maximum particle size depends on the delivery pipe diameter, should adopt continuous gradation, flakiness particle content must be below 10%.
④ cement. It is the most common concrete material, in order to prevent segregation case mix concrete delivery process generated, so often used cement, which has good water retention and bleeding of, in general, the most commonly used Portland cement .