The effect of calcium lignosulfonate on ettringite formation in cement paste

被引：62
作者：
Colombo, A. [1 ]
Geiker, M. [1 ]
Justnes, H. [2 ,3 ]
Lauten, R. A. [4 ]
De Weerdt, K. [1 ]
机构：
[1] Norwegian Univ Sci & Technol, NTNU, Dept Struct Engn, Trondheim, Norway
[2] SINTEF Bldg & Infrastruct, Trondheim, Norway
[3] Norwegian Univ Sci & Technol, NTNU, Dept Mat Sci & Engn, Trondheim, Norway
[4] Borregaard, Sarpsborg, Norway
来源：
CEMENT AND CONCRETE RESEARCH | 2018年 / 107卷
关键词：
Ettringite; Hydrated surface area; Adsorption; Fresh cement paste; Lignosulfonate; PORTLAND-CEMENT; SUPERPLASTICIZERS; HYDRATION; TIME; ADSORPTION; STABILITY; RHEOLOGY;
D O I：
10.1016/j.cemconres.2018.02.021
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The effect of a softwood calcium lignosulfonate, LSs, on the ettringite formed in cement paste was investigated. Two Portland cements, mainly differing in surface area and C(3)A content, were used. The effect of LSs addition time was studied, by adding either the LSs immediately with the mixing water or after 10 min of hydration. After 30 min of hydration of both cement pastes, the immediate addition of LSs caused the formation of numerous small ettringite crystals. The ettringite crystals had similar shape in pastes with and without LSs addition: cubic or cuboidal shape with length between 0.1 and 0.4 mu m. These small particles caused an increase in surface area, which in turn increased the LSs adsorption by the cement paste. This could potentially lead to incompatibility issues between cement and plasticizer.
引用
收藏
页码：188 / 205
页数：18
相关论文
共 40 条
[1]   Influence of time addition of superplasticizers on the rheological properties of fresh cement pastes [J].
Aiad, I .
CEMENT AND CONCRETE RESEARCH, 2003, 33 (08) :1229-1234
[2]   The density of cement phases [J].
Balonis, M. ;
Glasser, F. P. .
CEMENT AND CONCRETE RESEARCH, 2009, 39 (09) :733-739
[3]  
Barnes P., 2002, STRUCTURE PERFORMANC, VSecond
[4]  
Bazzoni A., 2014, STUDY EARLY HYDRATIO
[5]   Cement hydration inhibition with sucrose, tartaric acid, and lignosulfonate: Analytical and spectroscopic study [J].
Bishop, Maximilienne ;
Barron, Andrew R. .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (21) :7042-7049
[6]   ICP-OES method for the characterization of cement pore solutions and their modification by polycarboxylate-based superplasticizers [J].
Caruso, Francesco ;
Mantellato, Sara ;
Palacios, Marta ;
Flatt, Robert J. .
CEMENT AND CONCRETE RESEARCH, 2017, 91 :52-60
[7]   OPTIMUM TIME FOR ADDING SUPERPLASTICIZERS TO PORTLAND-CEMENT PASTES [J].
CHIOCCHIO, G ;
PAOLINI, AE .
CEMENT AND CONCRETE RESEARCH, 1985, 15 (05) :901-908
[8]   The effects of chemical environment on the nucleation, growth, and stability of ettringite [Ca3Al(OH)6]2(SO4)3•26H2O [J].
Cody, AM ;
Lee, H ;
Cody, RD ;
Spry, PG .
CEMENT AND CONCRETE RESEARCH, 2004, 34 (05) :869-881
[9]   On the effect of calcium lignosulfonate on the rheology and setting time of cement paste [J].
Colombo, A. ;
Geiker, M. R. ;
Justnes, H. ;
Lauten, R. A. ;
De Weerdt, K. .
CEMENT AND CONCRETE RESEARCH, 2017, 100 :435-444
[10]   On the mechanisms of consumption of calcium lignosulfonate by cement paste [J].
Colombo, A. ;
Geiker, M. ;
Justnes, H. ;
Lauten, R. A. ;
De Weerdt, K. .
CEMENT AND CONCRETE RESEARCH, 2017, 98 :1-9
1234