A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Cement cracking prevention modified superfine slag micropowder and preparation method therefor
The invention relates to cement cracking prevention modified superfine slag micropowder. The cement cracking prevention modified superfine slag micropowder is prepared from the following raw materials in parts by weight: 950-960 parts of slag, 30-40 parts of basalt fibers, 20-25 parts of eucryptite, 0.1-0.5 part of triethanolamine, 0.1-0.3 part of triisopropanolamine, 0.2-0.4 part of polymerized glycerine, 0.5-0.8 part of nano polytetrafluoroethylene, 60-65 parts of desulfurized gypsum, 0.2-0.4 part of vanadium pentoxide and 0.5-0.7 part of potassium dihydrogen phosphate. According to the slag micropowder provided by the invention, through using nano polytetrafluoroethylene, the surface energy is lowered, particle agglomeration is prevented, and the dispersity of the micropowder can be improved; through using the basalt fibers and the eucryptite, the toughness of concrete can be improved, cracking resistance is improved, drying-shrinkage cracks of the concrete caused due to the use of the slag micropowder can be obviously reduced, and the early strength of the concrete lowered due to the use of the slag micropowder can be improved.
Cement cracking prevention modified superfine slag micropowder and preparation method therefor
The invention relates to cement cracking prevention modified superfine slag micropowder. The cement cracking prevention modified superfine slag micropowder is prepared from the following raw materials in parts by weight: 950-960 parts of slag, 30-40 parts of basalt fibers, 20-25 parts of eucryptite, 0.1-0.5 part of triethanolamine, 0.1-0.3 part of triisopropanolamine, 0.2-0.4 part of polymerized glycerine, 0.5-0.8 part of nano polytetrafluoroethylene, 60-65 parts of desulfurized gypsum, 0.2-0.4 part of vanadium pentoxide and 0.5-0.7 part of potassium dihydrogen phosphate. According to the slag micropowder provided by the invention, through using nano polytetrafluoroethylene, the surface energy is lowered, particle agglomeration is prevented, and the dispersity of the micropowder can be improved; through using the basalt fibers and the eucryptite, the toughness of concrete can be improved, cracking resistance is improved, drying-shrinkage cracks of the concrete caused due to the use of the slag micropowder can be obviously reduced, and the early strength of the concrete lowered due to the use of the slag micropowder can be improved.
Cement cracking prevention modified superfine slag micropowder and preparation method therefor
ZHENG QISHI (author)
2015-12-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Preparation method of modified superfine granulated blast-furnace slag micropowder
| European Patent Office | 2022
| European Patent Office | 2015
High-constructability modified superfine mineral slag micropowder and preparation method thereof
| European Patent Office | 2015
Preparation method for phosphorus-slag micropowder applied to cement-based material
| European Patent Office | 2015