Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Super early strength accelerator for portland cement concrete
The invention discloses a super early strength accelerator for portland cement concrete. The super early strength accelerator is prepared from the following constituents in percent by weight: 20-50% of an early strength constituent, 10-40% of quick setting constituent, and 20-45% of a water reducing constituent, wherein the early strength constituent is obtained by compounding at least two of hydramine, an organic salt and an inorganic salt; the quick setting constituent is one of sodium aluminate, aluminum sulfate and sodium silicate; the water reducing constituent is one of a polycarboxylate type high performance water reducer, a high-performance naphthalene-based superplasticizer, and a high-performance aliphatic superplasticizer. The super early strength accelerator disclosed by the invention is free of chlorine and alkali; the 16 h compressive strength of the portland cement concrete prepared by using the super early strength accelerator in a low temperature environment in winter is up to 20 MPa above, so that the portland cement concrete can meet the requirement on quick road repair, and achieves the excellent construction performance.
Super early strength accelerator for portland cement concrete
The invention discloses a super early strength accelerator for portland cement concrete. The super early strength accelerator is prepared from the following constituents in percent by weight: 20-50% of an early strength constituent, 10-40% of quick setting constituent, and 20-45% of a water reducing constituent, wherein the early strength constituent is obtained by compounding at least two of hydramine, an organic salt and an inorganic salt; the quick setting constituent is one of sodium aluminate, aluminum sulfate and sodium silicate; the water reducing constituent is one of a polycarboxylate type high performance water reducer, a high-performance naphthalene-based superplasticizer, and a high-performance aliphatic superplasticizer. The super early strength accelerator disclosed by the invention is free of chlorine and alkali; the 16 h compressive strength of the portland cement concrete prepared by using the super early strength accelerator in a low temperature environment in winter is up to 20 MPa above, so that the portland cement concrete can meet the requirement on quick road repair, and achieves the excellent construction performance.
Super early strength accelerator for portland cement concrete
ZHANG YUNSHENG (Autor:in) / FAN JIANPING (Autor:in)
17.06.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
High-early-strength concrete with Portland cement
| Engineering Index Backfile | 1936
Highway early strength concrete from Portland cement
Engineering Index Backfile | 1928
Water Glass Accelerator for Heat Treated Portland Cement Concrete
| British Library Online Contents | 1995
Variation in strength of Portland cement concrete
| Engineering Index Backfile | 1959