Conas Is féidir I Sábháil Ar Stroighne Úsáid Agus Laghdú Costais Nuair Ag baint úsáide as Coincréite % 3f

An chéad% 2c an úsáid de cur uisce laghdú gníomhaire

Now uisce laghdú gníomhaire tar éis éirí i suimiú le stroighin % 2c gairbhéal % 2c uisce lasmuigh an coincréit de an cúigiú riachtanach comhpháirt ábhair. Cleachtas tá cruthaithe go% 2c in an coincréit measctha leis an ceart méid uisce laghdú gníomhaire % 2c araon chun feabhas a chur ar an neart de coincréit agus an ard-éifeachtúlacht uisce laghdú gníomhaire % 2c go ginearálta is féidir sábháil an stroighin dosage de 10% -15%. Mar sin féin, when adding, must pay attention to the other properties of concrete, such as durability, frost resistance, erosion resistance and so on. These properties are greatly affected by the amount of cement in the concrete, can reduce these properties at the expense of reducing the amount of cement.



Second, with fly ash and other cementitious materials to replace part of the cement
As we all know, fly ash is fine ash captured from the flue gas after coal combustion, is the main solid waste discharged from coal-fired power plants. Fly ash as a cement replacement material, the vast majority of cases are the following three ways of application: in the early strength requirements are very low, the long-term strength of about 25 ~ 35MPa in the large volume of hydraulic concrete, large dosage to replace the use of cement; slowly in the structure of the concrete, but also began to a small amount of replacement of cement (10 ~ 25%); and finally evolved into the present in the strength requirements of the low backfill or road base layer in a large number of mixing. Finally, it has evolved to the present situation where it is used in large quantities in backfill or road sub-base with very low strength requirements. The use of fly ash as a substitute for cement in concrete is now a very common phenomenon, because fly ash is not only cheap, low-cost, can increase the ease and fluidity of concrete, durability, but also as a waste resource use, to achieve the protection of the environment, energy saving and emission reduction effect.