Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The influence of calcium lignosulphonate-sodium bicarbonate on the status of ettringite crystallization in fly ash cement paste
Calcium lignosulphonate (CL)-sodium bicarbonate (SB) (a total of 0.7% by weight of cement and CL to SB ratio of 1:1.8) will cause the fluidity of fly ash cement paste to decrease rapidly. It is the variation of the status of ettringite crystallization that causes this phenomenon. Experimental results show that CL-SB affects the liquid-phase composition of fly ash cement paste remarkably. As a result, ettringite crystallizes out in the shape of needles from the solution. These needle-like crystal particles are distributed in the solution at a certain distance from the surface of clinker particles. At the initial hydration stage, the crystallization of ettringite is stronger in fly ash cement with calcined gypsum than in fly ash cement with gypsum.
The influence of calcium lignosulphonate-sodium bicarbonate on the status of ettringite crystallization in fly ash cement paste
Calcium lignosulphonate (CL)-sodium bicarbonate (SB) (a total of 0.7% by weight of cement and CL to SB ratio of 1:1.8) will cause the fluidity of fly ash cement paste to decrease rapidly. It is the variation of the status of ettringite crystallization that causes this phenomenon. Experimental results show that CL-SB affects the liquid-phase composition of fly ash cement paste remarkably. As a result, ettringite crystallizes out in the shape of needles from the solution. These needle-like crystal particles are distributed in the solution at a certain distance from the surface of clinker particles. At the initial hydration stage, the crystallization of ettringite is stronger in fly ash cement with calcined gypsum than in fly ash cement with gypsum.
The influence of calcium lignosulphonate-sodium bicarbonate on the status of ettringite crystallization in fly ash cement paste
Yang, Kerui (Autor:in) / Zhang, Caiwen (Autor:in) / Liu, Zhigang (Autor:in)
Cement and Concrete Research ; 32 ; 51-56
2002
6 Seiten, 5 Quellen
Aufsatz (Zeitschrift)
Englisch
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