... ABSTRACT: One of the main soft rock characteristics are relatively rapid deterioration and degradation of strength when soft rock is exposed to atmospheric agents. In the investigation of strength degradation caused by weathering, wetting-drying process (as a part of weathering) is the factor...

... Abstract Salt crystallization pressures may cause a certain degree of integrity loss and may accelerate the deterioration mechanism of rocks. Travertine is a type of massive CaCO 3 sedimentary rock. Although many researches about the mineralogical, chemical, and physical properties...

... Abstract One of the main soft (weak, clay-bearing) rocks characteristic is relatively rapid deterioration and degradation of strength when soft rock is exposed to atmospheric agents (i.e. weathering). In the investigation of strength degradation caused with weathering, wetting—drying process...

... Artificial Intelligence tunnel structure maintenance work deterioration process asset and portfolio management repair work Poisson process criteria maintenance one-way traffic control inspection critical soundness prediction soundness deterioration maintenance model soundness...

... European underground railway patrimony was built in the 19th Century, egllln1l1g of the 20th Century. Therefore, as a result of the old age of works and of the deficient construction methods used at the time a significant deterioration in the condition of the tunnels has been observed, which may endanger...

... alteration clay mineralization deterioration Upstream Oil & Gas water absorption rate uniaxial compressive strength strength characteristic montmorillonite content mineral shrinkage montmorillonite andesite volcanic rock andesite aggregate Japan VOLCANIC ROCK IN JAPAN: CHARACTERISTICS...

.... Le granite en oeuvre dans le batiment de I'Hospital de Santo António, monument historique de la ville de Porto, presente une diversite d'aspects de deterioration. Les differents types de pathologies, les mecanismes qui les determinent et l'impact de la pollution ont ete reconnues dans la surface des...

... ABSTRACT: This paper reports the case histories of foundation deterioration in the Portuguese Varosa and Venda Nova arch dams. The main characteristics of the works, the geological conditions, the observation systems, the detection of the abnormal behaviours, and aspects of the repair works...

... ABSTRACT: The concept of ageing of dams and their appurtenant works as a class of deterioration is presented. The major ageing scenarios concerning the rock mass foundations of concrete dams are indicated, with particular reference to scenarios of erosion and dissolution of rock masses...

... of this report the scope of the theme will be defined, the papers presented will be briefly reviewed, and some questions which seem to deserve further discussion will be selected. Artificial Intelligence displacement assumption deterioration reservoir geomechanics strength intervention application...