id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
app01-6387	Prošek, Zdeněk; Tesárek, Pavel	LONG-TIME INVESTIGATION OF CEMENT PASTES WITH MICRONIZED OLD CONCRETE, INFLUENCE OF DIFFERENT TYPE OF MIXING APPROACH ON MECHANICAL PROPERTIES	2020	5	.pdf	application/pdf	2981	170	59	Results of the work are in agreement with the statement of several authors, because the size of ITZ zone depends on the approach of mixing not only in recycled coarse aggregate but also in micronized recycled old concrete. Based on the results, it can be concluded that: • approach of mixing fresh mixtures had influence on mechanical properties of resulting cement compos- ites by reducing of ITZ, • the greatest effect of type of mixing approach can be seen in the sample where water and micronized old recycled concrete were mixed in the first step and in the second step, the cement was added, • the mixing speed has a positive effect on the re- sulting compressive strength, the change of mixing speed from 132 rpm to 421 rpm resulted in an in- crease of compressive strength of 5 MPa, • there is an increase of compressive strength due to hydration of C2S contained in Portland clinker of reference cement and in non-hydrated clinker of micronized recycled old concrete.	cache/app01-6387.pdf	txt/app01-6387.txt