Concrete admixture companies are engaged in the sixth raw material after stone, sand, cement, admixtures and water. It can be said to be an indispensable part of modern concrete. Since its birth in the 1930s, after nearly a century of development, product performance has been upgraded many times, from the initial lignin-based water-reducing agent to the current stage of polycarboxylic acid-based water-reducing agent. The main performance of the product The index water reduction rate has developed from the initial 8-15% to the current 25-45%, and the product types have also developed from the initial lignin single product to the current naphthalene sulfonate series, melamine series, and sulfamate series. series, polycarboxylic acid series and other major series of products. The domestic industry has also developed from a few companies at the beginning to thousands of companies at the current stage. The production model of the enterprise has developed from the initial single compounding to the current stage of compounding + synthesis integration. , the industrial structure has also undergone major changes. The evolutionary development path and mechanism of the water-reducing agent industry have not yet attracted the attention of scholars. Understanding the industry's evolution mechanism and development path will help predict the development trend of the industry and provide strategic reference for managers in the admixture industry.
At present, the overall development situation of my country's concrete admixture enterprises has the following four characteristics.
1. There are complete varieties of concrete admixtures, and product performance is constantly improving; synthetic admixture production enterprises are becoming large-scale, and the annual output value of large enterprises exceeds 1 billion yuan; automated production is receiving more and more attention, and some enterprises have achieved comprehensive In terms of automated production, small and medium-sized enterprises also attach great importance to automated control of key processes; except for Hainan and Tibet, there are already synthetic admixture manufacturers in the country, but the problem of uneven development distribution is more prominent.
2. Similar to other industries in the field of building materials (cement, commercial concrete), the concrete admixture industry has problems such as overcapacity, low industry thresholds, and market chaos. According to incomplete statistics, there are more than 1,500 admixture manufacturers, including more than 350 chemical synthesis plants. There are more than 100 polycarboxylic acid-based water reducing agent manufacturers, and currently there are 53 admixture companies certified by the Ministry of Railways and qualified to supply high-speed railways. The development of the concrete admixture industry lacks unified planning and industrial policies, and industry management and market supervision need to be strengthened. After the number of concrete admixture plants exceeds market demand, the qualification approval of new concrete admixture companies needs to be strictly controlled, and blind development and repeated construction cannot cause new malicious competition.
3. The environmental protection level of concrete admixture manufacturers needs to be further improved. Most compound admixture factories have not done any sealing treatment. Synthetic naphthalene series manufacturers produce odor during the naphthalene melting process. The floors in the compounding workshops of some admixture factories are not clean, and a lot of dust is raised when people walk around.
4. Foreign companies pay great attention to the development of China's concrete admixture industry. On the one hand, they increase and expand investment in China, and on the other hand, they accelerate the pace of acquiring domestic concrete admixture manufacturers.
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