Why is concrete called commercial concrete?

Commercial concrete, namely commercial concrete, is called ash or aggregate: it is a concrete mixture made of cement, aggregate, water, admixture and mineral admixture in a certain proportion, which is measured and mixed in a mixing station, sold and transported to the place of use by transport vehicles within a specified time. Concrete, pinyin for tóng, is the consent word of concrete. In engineering design and construction, the word "concrete" is often abbreviated as "concrete". 1953 was created by Professor Cai Fangyin, a famous structuralist. On June 7th, 1985, China Language Reform Commission officially approved the synonyms of "concrete" and "concrete".

Commercial concrete refers to concrete used for commercial purposes, such as selling and buying. Commercial concrete is mainly used in current building construction.

The general name of engineering composite materials in which aggregate is bonded into a whole by cementing materials. Generally speaking, the term concrete refers to cement as cementing material and sandstone as aggregate; Cement concrete, also known as ordinary concrete, is made by mixing cement and water (with or without additives and additives) in a certain proportion, stirring, molding and curing, and is widely used in civil engineering.

20 1 1 the ready-mixed commercial concrete industry has entered the post-market era of concrete machinery, which is the business model of third-party logistics. Third-party logistics is to find a powerful logistics company with standardized management and operation, subcontract all the transportation and pumping of concrete, and the mixing station focuses on concrete production and technology research and development. This model has begun to take shape in Guangdong. In southern developed areas such as Guangdong, concrete mixer, pump truck and mixing station are operated separately. The mixing station is only responsible for producing concrete, and the transportation and pumping are subcontracted to the logistics company for operation. However, in the northern region, due to the relatively relaxed competition environment of the ready-mixed concrete mixing station in previous years, the mixing station should not only be responsible for production, but also invest in the purchase of mixer trucks and pump trucks for operation, which has become a common phenomenon.

The purchase investment of mixer truck and pump truck accounts for more than half of the total investment of the mixing station, but the actual contribution profit only accounts for less than 10% of the total profit. Moreover, in the management of people, money and materials, mixer truck and pump truck occupy great energy of managers. In addition, a series of problems, such as drivers' low income, uneven quality, unstable team, frequent traffic accidents, and difficulty in handling second-hand equipment circulation, have caused a heavy burden to the operation and management of the mixing station. With the profit margin of mixing station gradually decreasing and the competitive environment getting worse, the trend of separate operation of mixer truck and pump truck is becoming more and more obvious. Large cement enterprises such as Jinyu, Jidong and Yatai have accelerated their entry into mixing stations integrating downstream industries, and the era of low profit in mixing stations has arrived. Third-party logistics, a brand-new business model, has gradually become the focus of attention.