Concrete Admixtures

From the perspective of the performance development process of water reducing agents, the development of water-reducing agents can be divided into the following four stages:① Development and application of ordinary water-reducing agents represented by lignosulfonate;② Superplasticizer represented by β-naphthalenesulfonate formaldehyde condensate (PNS) and sulfonated melamine formaldehyde condensate (PMS);③ A superplasticizer with slump retention ability modified [...]

High range water reducer is the key material and essential technical means for preparing advanced cement-based materials. The use of superplasticizer can produce ultra-high-strength concrete with a compressive strength of 120-150MPa, which is far higher than the strength level of cement, which ensuring concrete has good construction performance. At present, the synthesis [...]

Chemical material for silicone oil is increasing crazily nowadays, below is the related material trends. DMC prices continue to rise, making the supply of goods insufficient, monomer manufacturers entertained and accept orders in limited quantities. The superimposed emergencies have caused the downstream products to follow up. It is expected that the supply pressure on [...]

High range water reducer, HRWR, has different names in different countries. Europe and the United States used to call it superplasticizers, SP; Germany named it superverflussigar; In Japan call it air-entraining (AE) high range water reducer. In the development process of concrete technology, the invention and application of superplasticizers are recognized as [...]