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[35760] Artykuł:

The Sulphate Resistance of Mortars and Concretes with Calciferous Aggregate

Czasopismo: The Proceedings of the B. And K. Mather International Conference on the Concrete Durability   Strony: 2153-2170
Opublikowano: 1987
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału		 Liczba
punktów
Wojciech Piasta orcid logoWBiAKatedra Technologii i Organizacji Budownictwa *****33.00  
Jerzy Piasta33.00  
Zbigniew Sawicz33.00  

Grupa MNiSW:  Recenzowany referat w materiałach konferencyjnych w języku angielskim
Punkty MNiSW: 0

Pełny tekstPełny tekst    
Keywords:

aggregates  coarse aggregates  concrete durability  fly ash  granite  limestone  mortars material  sulfate resistance 


Abstract:

This investigation was carried out in order to explain the effect of the kind of aggregate on sulfate resistance of concretes and mortars. The objects of the studies were concretes with the following crushed coarse (2 to 20 mm) aggregates: porous limestone (porosity 36 percent), dense limestone (porosity 5.5 percent), and granite and mortars with the same calciferous aggregates (0 to 2 mm) and quartz sand (0 to 2 mm). It has been stated on the basis of the results of investigation that the sulfate resistance of concretes was different according to the aggregate used. However, the durability of concrete with the porous calciferous aggregate has been much better than expected in spite of its very high porosity of 36 percent. It has also been discovered that the mortars with the porous aggregate have been of higher resistance than the concretes made of that aggregate. Generally, a higher resistance of cement with fly ash replacement has been found than that of ordinary portland cement.


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