000002930 001__ 2930
000002930 005__ 20141118153414.0
000002930 04107 $$acze
000002930 046__ $$k2010-09-22
000002930 100__ $$aHohlfelder, R.L.
000002930 24500 $$aCement compositions and durability in ancient Roman seawater concretes M.D. Jackson, G. Vola, B.E. Scheetz, J.P. Oleson, Ch.Brandon,

000002930 24630 $$n2.$$pHistoric Mortars and RILEM TC 203-RHM Final Workshop
000002930 260__ $$bRILEM Publications s.a.r.l., 157 rue des Blains F-92220 Bagneux - France
000002930 506__ $$arestricted
000002930 520__ $$2eng$$aRoman hydraulic maritime concretes of the central Italian coast have Flegrean vitric tuff as coarse aggregate and mortar pozzolan. Pozzolanic reaction at high pH produced silica-rich CASH and calcium carbonate cements; tobermorite in the residual cores of lime and vitric tuff clasts; and ettringite and calcium-chloroaluminate in bead-like microstructures and voids. Phillipsite may reflect dissolution of residual alkali-rich volcanic glass at lower pH. The cement systems seem to have remained relatively stable during partial to full immersion in seawater for 2000 years. Further analytical investigations will determine the diverse chemical processes that produced specific cement microstructures.

000002930 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002930 653__ $$a

000002930 7112_ $$a2nd Conference and of the Final Workshop of RILEM TC 203-RHM$$cPrague (CZ)$$d2010-09-22 / 2010-09-24$$gHMC2010
000002930 720__ $$aHohlfelder, R.L.
000002930 8560_ $$ffischerc@itam.cas.cz
000002930 8564_ $$s672404$$uhttps://invenio.itam.cas.cz/record/2930/files/page_0217.pdf$$y
             Original version of the author's contribution as presented on CD, , page 217.
            
000002930 962__ $$r2907
000002930 980__ $$aPAPER