Searched for: +
(1 - 8 of 8)
document
Nijland, T.G. (author), Larbi, J.A. (author), de Rooij, M.R. (author), Polder, R.B. (author), TNO Bouw en Ondergrond (author)
Use of Rhenish trass in (historic) lime mortars is well known. However, its application to concrete has not been investigated elaborately. In the past, trass was used as a pozzolanic addition to concrete for marine structures in the Netherlands. Recent investigations of several structures have shown that identification of trass in aged concretes...
article 2007
document
Polder, R.B. (author), Larbi, J.A. (author), TNO Bouw en Ondergrond (author)
Explosive spalling of pieces of concrete from the heated surface is considered to be the most dangerous effect of damage of concrete subjected to intense fire attack, especially when it occurs in restricted areas such as underground tunnels. Recent investigations have revealed that the amount of explosive spalling and the extent of cracking can...
article 2007
document
Nijland, T.G. (author), Larbi, J.A. (author), van Hees, R.P.J. (author), Lubelli, B.A. (author), de Rooij, M.R. (author), TNO Bouw (author)
A microscopic survey of over 1000 of samples of concrete and masonry mortars from structures in the Netherlands shows that, in practice, self healing occurs in historic lime and lime – puzzolana mortars, in contrast to modern cement bound concretes and mortars. Self healing may be effected by the formation of either new Ca-carbonate, CaCO3, or...
conference paper 2007
document
Lindqvist, J.E. (author), Nijland, T.G. (author), von Konow, T. (author), Plesser, T.S.W. (author), Nyman, P. (author), Larbi, J. (author), van Hees, R.P.J. (author), TNO Bouw en Ondergrond (author)
report 2006
document
van Hees, R.P.J. (author), Nijland, T.G. (author), Larbi, J.A. (author), Wijffels, T.J. (author), Brocken, H.J.P. (author), TNO Bouw en Ondergrond (author)
The characterisation of two ancient mortars in historic bridges, suffering damage due to thaumasite and other swelling compounds is described. Characterisation was part of the analysis of damage occurring to the brick masonry structure. Expansive reactions were found to have taken place, being the cause of the damage to the masonry. In both...
conference paper 2005
document
Lubelli, B. (author), van Hees, R.P.J. (author), Larbi, J.A. (author), TNO Bouw en Ondergrond (author)
The quality of the materials constituting masonry has a major influence on the type and seriousness of the damage that can occur due to salt crystallization. In the case of brick, the composition of the original clay, together with the production process, determine the quality of the final product and it's eventual susceptibility to salt decay....
conference paper 2005
document
Larbi, J.A. (author), van Hees, R.P.J. (author), Naldini, S. (author), TNO Bouw (author)
This paper deals with the use of an integrated microscopic method to assist in the investigation of the causes and the extent of decay of the stones and ornaments in the gothic Clurch of Out Lady in Breda, The Netherlands. The purpose of the study was to determine whether conservation measures were necessary. As part of the investigation 8...
article 2003
document
Larbi, J.A. (author), TNO Bouw (author)
The mechanical properties and the durability of natural building stones are influenced to a large extent by inherent inhomogeneities. One of such inhomogeneities is a stylolite, particularly when it occuts in carbonate-rich rocks. Stylolites are irregular surfaces in which small tooth-like projections on one side of the surface fit into cavities...
article 2003
Searched for: +
(1 - 8 of 8)