Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Application method of retarder in cement
The invention discloses an application method of a retarder in cement. The retarder comprises the following raw materials: 15 to 30% of sodium lignin sulfonate, 3 to 15% of a biosurfactant, 15 to 40% of an inorganic phosphate, 7 to 20% of an organic phosphonate, 3 to 10% of tartaric acid and 15 to 25% of deionized water. According to the invention, during preparation of the retarder, a certain amount of the sodium lignin sulfonate and a polyoxyethylene nonionic surfactant are added into the raw materials, and the sodium lignin sulfonate can be compounded with inorganic phosphate and organic phosphonic acid, so the application range of the cement retarder in different temperature environments is enlarged, the flowability and plasticity of cement can be greatly improved, generation of harmful pores is greatly reduced; and the calcium soap dispersion characteristic of the biological surfactant is utilized, and the biological surfactant can effectively disperse coagulum generated in a cement retarding process into a plurality of small particles, so the coagulum is prevented from agglomerating, and the cement is prevented from being hardened too early.
本发明公开了一种缓凝剂在水泥中的应用方法，所述缓凝剂包括如下的原料：15～30％木质素磺酸钠，3～15％生物表面活性剂，15～40％无机磷酸盐，7～20％有机膦酸盐，3～10％酒石酸以及15～25％去离子水，本发明在对缓凝剂进行制备过程中，向原料中添加一定量的木质素磺酸钠和聚氧乙烯型非离子表面活性剂，其中木质素磺酸钠可与无机磷酸盐和有机膦酸复配使用，增大水泥缓凝剂的在不同温度环境下的适应范围，同时还可大幅改善水泥的流动性和可塑性，大大降低有害孔隙的生产，且利用其中生物表面活性剂的钙皂分散特性，生物表面活性剂可有效的将水泥缓凝过程中产生凝固物分散成若干个小颗粒物，以防止凝固物团聚，造成水泥的过早硬化。
Application method of retarder in cement
The invention discloses an application method of a retarder in cement. The retarder comprises the following raw materials: 15 to 30% of sodium lignin sulfonate, 3 to 15% of a biosurfactant, 15 to 40% of an inorganic phosphate, 7 to 20% of an organic phosphonate, 3 to 10% of tartaric acid and 15 to 25% of deionized water. According to the invention, during preparation of the retarder, a certain amount of the sodium lignin sulfonate and a polyoxyethylene nonionic surfactant are added into the raw materials, and the sodium lignin sulfonate can be compounded with inorganic phosphate and organic phosphonic acid, so the application range of the cement retarder in different temperature environments is enlarged, the flowability and plasticity of cement can be greatly improved, generation of harmful pores is greatly reduced; and the calcium soap dispersion characteristic of the biological surfactant is utilized, and the biological surfactant can effectively disperse coagulum generated in a cement retarding process into a plurality of small particles, so the coagulum is prevented from agglomerating, and the cement is prevented from being hardened too early.
本发明公开了一种缓凝剂在水泥中的应用方法，所述缓凝剂包括如下的原料：15～30％木质素磺酸钠，3～15％生物表面活性剂，15～40％无机磷酸盐，7～20％有机膦酸盐，3～10％酒石酸以及15～25％去离子水，本发明在对缓凝剂进行制备过程中，向原料中添加一定量的木质素磺酸钠和聚氧乙烯型非离子表面活性剂，其中木质素磺酸钠可与无机磷酸盐和有机膦酸复配使用，增大水泥缓凝剂的在不同温度环境下的适应范围，同时还可大幅改善水泥的流动性和可塑性，大大降低有害孔隙的生产，且利用其中生物表面活性剂的钙皂分散特性，生物表面活性剂可有效的将水泥缓凝过程中产生凝固物分散成若干个小颗粒物，以防止凝固物团聚，造成水泥的过早硬化。
Application method of retarder in cement
一种缓凝剂在水泥中的应用方法
DING QI (Autor:in) / JIANG PENG (Autor:in) / JIANG JING (Autor:in)
31.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Retarder for phosphate cement and application method thereof
| Europäisches Patentamt | 2016
| Europäisches Patentamt | 2024