Admixtures that can significantly reduce the amount of mixing water Superplasticizer

The water reducing rate of high-efficiency water reducing agent can reach more than 20%. Mainly are naphthalene series, melamine series and water reducing agents compounded by them, of which naphthalene series is the main one, accounting for 67%. Especially in my country, most of the high-efficiency water reducers are naphthalene-based Superplasticizer high-efficiency water reducers with naphthalene as the main raw material. Naphthalene-based high-efficiency water reducers can be divided into high-concentration products (Na2SO4 content<3%), medium-concentration="" products="" na2so4="" content="" to="" and="" low-concentration="">10%). Most naphthalene-based high-efficiency water reducer synthesis plants have the ability to control the Na2SO4 content below 3%, and some advanced enterprises can even control it below 0.4%.

Naphthalene-based water reducer is the most produced and widely used high-efficiency water reducer Superplasticizer in my country (accounting for more than 70% of the amount of water reducer), which is characterized by a high water reducing rate (15% to 25%), no air , has little effect on setting time, has relatively good adaptability to cement, can be used in combination with various other admixtures, and is relatively cheap in price. Naphthalene-based water reducers are often used to prepare high-fluidity, high-strength, high-performance concrete. The slump loss of concrete mixed with naphthalene-based water reducing agent is relatively fast. In addition, the adaptability of naphthalene-based water reducers to certain cements needs to be improved.