(1) Polycarboxylate water reducing agent monomer saves power and resources
At present, China is in a period of rapid development and production, and the relative shortage of power resources is an important issue for the rapid development. On the one hand, polycarboxylate superplasticizer has compatibility with admixtures, encouraging the use of industrial by-products. On the other hand, with its high water reduction rate, it can save a lot of cement. This means that a project can save thousands of cement, helping to reduce the environmental pollution caused by clinker burning, which plays an important role in the development direction of green building materials.
(2) Encourage the development of green building materials with low environmental load
Formaldehyde is a highly toxic substance and ranks second on the priority control list of toxic chemicals in China. Formaldehyde has been identified by the World Health Organization as a carcinogenic and teratogenic substance, a recognized source of reaction, and one of the potential strong mutagens. Research has shown that formaldehyde has strong carcinogenic and carcinogenic effects. The impact of formaldehyde on human health is mainly manifested in olfactory dysfunction, impact, lung dysfunction, liver dysfunction, and antibody dysfunction
(3) Advance the durability of concrete and help promote its high functionality
Concrete engineering, due to its large engineering volume and lack of durability, poses a very heavy burden on future society. A survey in the United States shows that the total value of concrete infrastructure projects in the country is about $6 trillion, and the annual repair or reconstruction costs are about $300 billion. Out of 500000 highway bridges in the United States, 200000 have been damaged, with an average of 150-200 bridges partially or completely collapsing each year, resulting in a lifespan shortage of 20 years; The United States has built 3000 concrete dams with an average lifespan of 30 years, of which 32% are in disrepair. The cost of reinforcing and repairing concrete projects built by the United States before and after World War II after 30-50 years of use accounts for more than 40-50% of the total production investment. Nowadays, the scale of infrastructure construction projects in China is enormous, reaching over 2 trillion yuan per year. In about 30-50 years, these projects will also enter the repair period, and the required repair or reconstruction costs will be even greater. Therefore, the durability of advanced concrete is of great significance for the current completion of sustainable strategies, better utilization of resources, energy conservation, and environmental protection.
Functional advantages of polycarboxylate superplasticizer
Polycarboxylate water reducers have become the future direction of water reducers due to their excellent dispersibility and dispersibility. Polycarboxylate water reducers have been widely used in mainland China, such as high-speed railways, cross river and underwater tunnels, to improve the workability of concrete, optimize its long-term use, and encourage the high functionality of concrete. Specifically, polycarboxylate water reducers have the following characteristics and uses:
(1) High water reduction rate, advanced concrete fluidity;
(2) Without segregation or bleeding, it is better to adhere to the function of concrete slump, which can achieve almost no loss within 120 minutes. It is used to improve the construction function of concrete and facilitate transportation and pumping;
(3) Capable of producing high and ultra durable concrete, advancing the durability of concrete and achieving a hundred year lifespan of concrete;
(4) Good compatibility with cement, admixtures, and other additives, increasing the dosage of admixtures, saving resources and power, and reducing environmental load;
(5) It can help to lower the adiabatic temperature rise of concrete in the early stage underground, which is more beneficial for large volume concrete, and reduce the volume stability of concrete by shortening its advance.
From this, it can be seen that polycarboxylate superplasticizer has the ability to meet the high functional requirements of concrete in the 21st century.
