Urgent Need To Popularize Ready Mixed Concrete--Technical And Economic Analysis Of Ready Mixed Concrete

With the development of society, concrete gradually has become one of the necessary basic materials to the human beings. At present concrete is the biggest construction material in quantity and is used extensively in constructive field, for example, industrial & civil buildings, highways, bridges, ports and harbors, airports, dams, tunnels, underground engineering, under and above sea engineering, etc. There are two ways to produce concrete. One is Spot mixed concrete; the other way is Ready mixed concrete. In 1970s, Ready mixed concrete went into its golden time in the world. The output of Ready mixed concrete kept ahead in the total output of concrete, the percentage of which to the total output has reached 60%~80% in the developed countries, however, it was only 11.8% in our country by 2002. Apparently there is gap between our country and the developed countries in this field.By retrospection the developing history of Ready mixed concrete in our country, the author find out the gap between our country and the developed countries in this field. And put stress on contrastive analysis between Ready mixed concrete and Spot mixed concrete from three sides. Side one is from state and society, the author maintains that the development of Ready mixed concrete accord with correlative industrial policies of our country and has a hopeful prospect because it can utilize the national resource validly, protect environmentand improve urban environment so as to realize sustainable development. From technique, Ready mixed concrete shows superiorities in many aspects, for example improving the quality of concrete, to insure the quality of large cubage concrete in construction, to raise working efficiency, to shorten the project period, to make use of waste residue of industry and technical innovation, etc. By quantitative analysis in economy, the clients and investments will profit from the comprehensive benefit in Ready mixed concrete. The conclusion drawn from economic analysis is valuable to help the clients and the investments to control engineering cost and to give administrative department a reference to institute policy for price.By analysis we can draw the conclusion. Ready mixed concrete is advanced in technique, reasonable in economy and promising in prospect. There is no doubt that using Ready mixed concrete is the best choice to benefit both the nation and individuals. Ready mixed concrete is worthy of extensive application. It is high time we were extensively applying to Ready mixed concrete.