Estudio de la fluencia de una calcarenita: la Piedra de San Julián (Alicante)

Abstract

Rocks creep has a great importance in the evaluation of the long-term behaviour of elements built with or within these materials. In this work, a porous well-known limestone locally named as San Julián stone has been physically and mechanically characterized. Uniaxial compressive tests for 96 h. at constant stress are carried out. Long-term behaviour has been modelled by means of a well-known creep model, the CEB-FIP Model code 2010, used for modelling other stony-material (i.e. concrete). Furthermore, a rheological model has been proposed. The main aim of this work is to investigate the possibility of exploiting the vast experience accumulated in the study of concrete deformational long-term behaviour in order to obtaining a reasonable approach to the behaviour of the rock, for too long testing times difficult to implement in laboratory. A creep function adapted to the studied rock only dependent on its elastic and mechanical characteristics is also proposed in this work.

Nanolime consolidation of the main building stone of the archaeological site of Volubilis (Morocco)

“…The Calcarenite of Volubilis has a capillary coefficient of 2.03 kg/m²/h 0.5 , and compressive strength of 18.45 MPa. Compared to the previously cited calcarenites, the presently tested calcarenite has a higher compressive strength than the Marsala stone (1.2 to 4 MPa) [27], lower than the san Julian calcarenite (38 MPa) [29]. The Maastricht calcarenite has a wide compressive strength range (5 to 20 MPa) [30].…”

“…The interval between two consecutive applications was defined as 3 hours. All measurements were performed after 28 days of curing [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. During this time, the specimens were placed in a controlled environment, with a temperature of 20°C and relative humidity of 76 %, to enhance the carbonation process and ensure maximum conversion of Ca(OH)2 into CaCO3 [38].…”

The Research on the Effect of Humidity on the Rheological Model of Swelling Rock

“…Nedjar and Roy [12] suggested a creep mechanical model which could describe the whole creep process of granite with different temperatures. Brotons et al [13] studied the mechanical characteristics of limestone in a 96 hour uniaxial compressive creep test and proposed a theological model and a creep function to study the creep behaviour of rock dependent on time. Cao et al [14] defined a new nonlinear damage creep constitutive model of high-stress soft rock with improved Burgers model, Hooke model, and St. Venant model based on the nonlinear damage creep characteristics of rock and damage variable.…”