As mentioned earlier, the purpose of this research was to evaluate
the impact of different OC, grouped according to d001 and different
functional group of modifier, on the properties of cement
paste. Since cement was partially replaced by OC, the microstructure
analysis of the samples was performed. The SEM micrographs
are shown in Fig. 2. The fracture surface of the plain cement paste
(PC) consists of a combination of smooth and rough areas typical of
fracture features of cement based materials (Fig. 2a and c).
Although no plasticizer or dispersing agent was used to avoid OC
agglomeration, in the contrast to [11], large (30–50 lm) OC grains
were not found, possibly due to long OC mixing with water performed
in this study (Fig. 2b). Since surface of OC particle is extended with unclosed lamellas
As mentioned earlier, the purpose of this research was to evaluatethe impact of different OC, grouped according to d001 and differentfunctional group of modifier, on the properties of cementpaste. Since cement was partially replaced by OC, the microstructureanalysis of the samples was performed. The SEM micrographsare shown in Fig. 2. The fracture surface of the plain cement paste(PC) consists of a combination of smooth and rough areas typical offracture features of cement based materials (Fig. 2a and c).Although no plasticizer or dispersing agent was used to avoid OCagglomeration, in the contrast to [11], large (30–50 lm) OC grainswere not found, possibly due to long OC mixing with water performedin this study (Fig. 2b). Since surface of OC particle is extended with unclosed lamellas
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