Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Phosphogypsum based high flow state grouting material
The invention discloses a phosphogypsum based high flow state grouting material. The phosphogypsum based high flow state grouting material is composed of the following components in parts by weight: 50-70 parts of phosphorus based semi-hydrated gypsum, 20-40 parts of coal ash, 8-12 parts of compound activator, 6-10 parts of gypsum whisker, 0.05-0.15 part of retarder, 0.2-0.6 part of water reducing agent, 0.04-0.08 part of water retaining agent and 0.02-0.06 part of water repellent. Wherein, the phosphorus based semi-hydrated gypsum is phosphorus based high-strength gypsum or a mixture of the phosphorus based high-strength gypsum and phosphorus based building gypsum with a mass ratio of 4:1 to 5:1. The grouting material is prepared from the phosphogypsum in the invention to achieve the resource utilization of the phosphogypsum, and is green and environmentally friendly. The coal ash is used as a mineral admixture, and acetylene sludge and cement are used as an alkali activator to reduce the cost and well improve the water resistance and durability of the grouting material, and the gypsum whisker is used for modifying the grouting material to improve the breaking strength of the grouting material.
Phosphogypsum based high flow state grouting material
The invention discloses a phosphogypsum based high flow state grouting material. The phosphogypsum based high flow state grouting material is composed of the following components in parts by weight: 50-70 parts of phosphorus based semi-hydrated gypsum, 20-40 parts of coal ash, 8-12 parts of compound activator, 6-10 parts of gypsum whisker, 0.05-0.15 part of retarder, 0.2-0.6 part of water reducing agent, 0.04-0.08 part of water retaining agent and 0.02-0.06 part of water repellent. Wherein, the phosphorus based semi-hydrated gypsum is phosphorus based high-strength gypsum or a mixture of the phosphorus based high-strength gypsum and phosphorus based building gypsum with a mass ratio of 4:1 to 5:1. The grouting material is prepared from the phosphogypsum in the invention to achieve the resource utilization of the phosphogypsum, and is green and environmentally friendly. The coal ash is used as a mineral admixture, and acetylene sludge and cement are used as an alkali activator to reduce the cost and well improve the water resistance and durability of the grouting material, and the gypsum whisker is used for modifying the grouting material to improve the breaking strength of the grouting material.
Phosphogypsum based high flow state grouting material
MA BAOGUO (Autor:in) / JIN ZIHAO (Autor:in) / SU YING (Autor:in) / ZHI ZHENZHEN (Autor:in) / HE XINGYANG (Autor:in) / LI XIANLIANG (Autor:in) / LU WENDA (Autor:in)
20.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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