A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cement retarder
The invention discloses a cement retarder and belongs to the technical field of preparation of building materials. The cement retarder comprises the following components in parts by weight: 15-25 parts of amino trimethylene diphosphonic acid, 2-5 parts of aluminum silicate, 0.5-1.3 parts of phosphorous gypsum, 0.2-1.4 parts of N,N-dimethyl pyrrolidone, 0.2-1.5 parts of phosphorus pentoxide, 1-3 parts of asbestos powder, 0.3-1.5 parts of a quaternary ammonium bis-imidazoline corrosion inhibitor, 0.5-1.8 parts of ammonium persulfate, 2-3 parts of calcium metaaluminate and 2-6 parts of maleic acid. The cement retarder is applicable to wide temperature range span and can be used for effectively delaying solidification time of the cement and changing the solidification time by adjusting the ratio of the content of the cement.
Cement retarder
The invention discloses a cement retarder and belongs to the technical field of preparation of building materials. The cement retarder comprises the following components in parts by weight: 15-25 parts of amino trimethylene diphosphonic acid, 2-5 parts of aluminum silicate, 0.5-1.3 parts of phosphorous gypsum, 0.2-1.4 parts of N,N-dimethyl pyrrolidone, 0.2-1.5 parts of phosphorus pentoxide, 1-3 parts of asbestos powder, 0.3-1.5 parts of a quaternary ammonium bis-imidazoline corrosion inhibitor, 0.5-1.8 parts of ammonium persulfate, 2-3 parts of calcium metaaluminate and 2-6 parts of maleic acid. The cement retarder is applicable to wide temperature range span and can be used for effectively delaying solidification time of the cement and changing the solidification time by adjusting the ratio of the content of the cement.
Cement retarder
FAN KAIJUAN (author) / LI WENYONG (author) / LI CHANGMIN (author)
2015-04-29
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME