Understanding the decay of stone-built cultural heritage

The problem of the decay and conservation of stone-built heritage is a complex one, requiring input across many disciplines to identify appropriate remedial steps and management strategies. Over the past few decades, earth scientists have brought a unique perspective to this challenging area, drawing on traditions and knowledge obtained from research into landscape development and the natural environment. This paper reviews the crucial themes that have arisen particularly, although not exclusively, from the work of physical geographers — themes that have sought to correct common misconceptions held by the public, as well as those directly engaged in construction and conservation, regarding the nature, causes and controls of building stone decay. It also looks to the future, suggesting how the behaviour of building stones (and hence the work of stone decay scientists) might alter in response to the looming challenge of climate change.

[1]  Peter Brimblecombe,et al.  Aesthetic thresholds and blackening of stone buildings. , 2005, The Science of the total environment.

[2]  H. Viles,et al.  Remeasurement of weathering rates, St. Paul's Cathedral, London , 1989 .

[3]  R. B. G. Williams,et al.  Experimental frost weathering of sandstone by various combinations of salts , 2001 .

[4]  Rafael Fort,et al.  Influence of surface heterogeneities of building granite on its thermal response and its potential for the generation of thermoclasty , 2008 .

[5]  Patricia Warke,et al.  Thermal response characteristics of stone: Implications for weathering of soiled surfaces in urban environments , 1996 .

[6]  Bernard J. Smith,et al.  Salt Weathering in Hot Deserts: Observations on the Design of Simulation Experiments , 1982 .

[7]  P. Warke,et al.  Variable weathering response in sandstone: factors controlling decay sequences , 2006 .

[8]  A. Goudie,et al.  Further experimental investigation of rock weathering by salt and other mechanical processes , 1974 .

[9]  A. Goudie,et al.  Experimental simulation of rapid rock block disintegration by sodium chloride in a foggy coastal desert , 1998 .

[10]  S. Mccabe,et al.  Preliminary observations on the impact of complex stress histories on sandstone response to salt weathering: laboratory simulations of process combinations , 2007 .

[11]  A. Goudie,et al.  Disintegration of Fan Sediments in Death Valley, California, by Salt Weathering , 1980 .

[12]  J. Curran,et al.  Urban stone decay: the great weathering experiment , 2005 .

[13]  Dawn T. Nicholson,et al.  Pore properties as indicators of breakdown mechanisms in experimentally weathered limestones , 2001 .

[14]  D. Dragovich CAVERN MICROCLIMATES IN RELATION TO PRESERVATION OF ROCK ART , 1981 .

[15]  W. B. Whalley,et al.  Rock temperatures from southeast Morocco and their significance for experimental rock-weathering studies , 1984 .

[16]  Mary J. Thornbush,et al.  Changing patterns of soiling and microbial growth on building stone in Oxford, England after implementation of a major traffic scheme. , 2006, The Science of the total environment.

[17]  Bernard J. Smith,et al.  The use of sequential extraction to examine iron and trace metal mobilisation and the case-hardening of building sandstone: a preliminary investigation , 2003 .

[18]  J. P. McGreevy,et al.  Thermal properties as controls on rock surface temperature maxima, and possible implications for rock weathering , 1985 .

[19]  R. B. G. Williams,et al.  Weathering of sandstone by alunogen and alum salts , 1998, Quarterly Journal of Engineering Geology.

[20]  Kevin Hall,et al.  The role of thermal stress fatigue in the breakdown of rock in cold regions , 1999 .

[21]  Cristina Sabbioni,et al.  Exposure tests of building materials in urban atmosphere , 1998 .

[22]  Heather Viles,et al.  Rapid, catastrophic decay of building limestones: Thoughts on causes, effects and consequences , 2006 .

[23]  Robert Inkpen,et al.  Using gravestones to assess changing rates of weathering in the United Kingdom , 1995 .

[24]  P. Warke Complex weathering in drylands: Implications of ‘stress’ history for rock debris breakdown and sediment release , 2007 .

[25]  Bernard Smith,et al.  Observations of three-dimensional salt distribution in building sandstone , 2000 .

[26]  R. Přikryl,et al.  Diagnosing decay: the value of medical analogy in understanding the weathering of building stones , 2007, Geological Society, London, Special Publications.

[27]  Patricia Warke,et al.  Sandstone response to salt weathering following simulated fire damage: a comparison of the effects of furnace heating and fire , 2007 .

[28]  Salvador Ordóñez,et al.  Quantification of salt weathering in porous stones using an experimental continuous partial immersion method , 2001 .

[29]  J. P. McGreevy ‘frost and salt’ weathering: Further experimental results , 1982 .

[30]  T. Meierding MARBLE TOMBSTONE WEATHERING RATES: A TRANSECT OF THE UNITED STATES , 1981 .

[31]  M. André,et al.  Rock thermal data at the grain scale: applicability to granular disintegration in cold environments , 2003 .

[32]  R. Fort,et al.  Overview of recent knowledge of patinas on stone monuments: the Spanish experience , 2007, Geological Society, London, Special Publications.

[33]  G. Pope,et al.  Geomorphology's role in the study of weathering of cultural stone ☆ , 2002 .

[34]  A. Watson,et al.  Rock block monitoring of rapid salt weathering in southern Tunisia , 1984 .

[35]  Peter Brimblecombe,et al.  Sulfate and carbon compounds in black crusts from the cathedral of Milan and Tower of London , 2006 .

[36]  T. Paradise Analysis of sandstone weathering of the Roman theater in Petra, Jordan , 1999 .

[37]  Bernard J. Smith,et al.  Complex weathering effects on durability characteristics of building stone , 2007, Geological Society, London, Special Publications.

[38]  Bernard J. Smith,et al.  Daytime rock surface temperature variability and its implications for mechanical rock weathering: Tenerife, Canary Islands. , 1990 .

[39]  L. Pel,et al.  Simulating the growth of tafoni , 2004 .

[40]  CONTRIBUTION OF CALCIUM FROM LIMESTONE AND MORTAR TO THE DECAY OF GRANITE WALLING , 1991 .

[41]  A. Goudie,et al.  Laboratory simulation of ‘the wick effect’ in salt weathering of rock , 1986 .

[42]  Christopher Andrew Perception and aesthetics of weathered stone façades , 2002 .

[43]  Heather Viles,et al.  Understanding and Managing Stone Decay , 2004 .

[44]  Bernard J. Smith,et al.  Surface change and decay of sandstone samples exposed to a polluted urban atmosphere over a six-year period: Belfast, Northern Ireland , 2003 .

[45]  Rafael Fort,et al.  Surface temperature differences between minerals in crystalline rocks: Implications for granular disaggregation of granites through thermal fatigue , 2006 .

[46]  David E. Searle,et al.  Stone deterioration in polluted urban environments , 2004 .

[47]  H. Viles,et al.  Bioprotection explored: the story of a little known earth surface process , 2005 .

[48]  Bernard J. Smith,et al.  Observations on the factors influencing stability of building stones following contour scaling: a case study of oolitic limestones from Budapest, Hungary , 2003 .

[49]  H. Markewich The Nature of Weathering: An Introduction , 1989 .

[50]  R. Cooke Geomorphological Contributions to Acid Rain Research: Studies of Stone Weathering , 1989 .

[51]  Denys Brunsden,et al.  Geomorphology and time , 1977 .

[52]  P. O'brien,et al.  Role of mortars in the decay of granite , 1995 .

[53]  I. Smalley,et al.  Salt Weathering in Deserts , 1968, Nature.

[54]  H. Viles The early stages of building stone decay in an urban environment , 1990 .

[55]  Dario Camuffo,et al.  Microclimate for Cultural Heritage , 1998 .

[56]  Patricia Warke,et al.  Salt distribution in clay-rich weathered sandstone , 2000 .

[57]  A. Davison An investigation into the relationship between salt weathering debris production and temperature , 1986 .

[58]  Background controls on urban stone decay; lessons from natural rock weathering , 2003 .

[59]  J. Phillips,et al.  Cavernous weathering, dynamical instability and self‐organization , 2004 .

[60]  Bernard Smith,et al.  Contour scaling of a sandstone by salt weathering under simulated hot desert conditions , 1988 .

[61]  D. Robinson,et al.  Experimental frost and salt weathering of chalk—I , 1990 .

[62]  A. Goudie,et al.  Salt weathering simulation using a single-immersion technique , 1993 .

[63]  Michael Martin Reddy Acid rain damage to carbonate stone: A quantitative assessment based on the aqueous geochemistry of rainfall runoff from stone , 1988 .

[64]  Patricia Warke,et al.  Modelling the rapid retreat of building sandstones: a case study from a polluted maritime environment , 2002, Geological Society, London, Special Publications.

[65]  Bernard J. Smith,et al.  An holistic approach to the assessment of stone decay: Bonamargy Friary, Northern Ireland , 2007, Geological Society, London, Special Publications.

[66]  Heather Viles,et al.  How wet are these walls? Testing a novel technique for measuring moisture in ruined walls , 2006 .

[67]  D. Fabbri,et al.  Soiling of limestone in an urban environment characterized by heavy vehicular exhaust emissions , 2004 .

[68]  R. U. Cooke,et al.  Laboratory simulation of salt weathering processes in arid environments , 1979 .

[69]  H. Viles,et al.  Lichen hotspots: raised rock temperatures beneath Verrucaria nigrescens on limestone , 2004 .

[70]  K. Hall,et al.  Thermal gradients and rock weathering at low temperatures: Some simulation data , 1991 .

[71]  P. O'brien,et al.  Stone loss rates at sites around Europe , 1995 .

[72]  R. B. G. Williams,et al.  Rock weathering and landform evolution , 1996 .

[73]  R. B. G. Williams,et al.  Experimental weathering of sandstone by combinations of salts , 2000 .

[74]  M. André,et al.  New insights into rock weathering from high-frequency rock temperature data: an Antarctic study of weathering by thermal stress , 2001 .

[75]  David J. Mitchell,et al.  Influence of climatically induced cycles in physical weathering , 1998, Quarterly Journal of Engineering Geology.

[76]  Erhard M. Winkler Stone: properties, durability in man's environment , 1973 .

[77]  Bernard J. Smith,et al.  Weathering of igneous rocks during shallow burial in an upland peat environment: observations from the Bronze Age Copney Stone Circle Complex, Northern Ireland , 2002 .

[78]  George F. Matthias Weathering Rates of Portland Arkose Tombstones , 1967 .

[79]  M. Guglielmin,et al.  Weathering of granite in Antarctica: II. Thermal stress at the grain scale , 2008 .

[80]  H. Viles Implications of future climate change for stone deterioration , 2002, Geological Society, London, Special Publications.

[81]  Patricia Warke,et al.  Effects of direct and indirect heating on the validity of rock weathering simulation studies and durability tests , 1998 .

[82]  Rafael Fort,et al.  Patterns of halite (NaCl) crystallisation in building stone conditioned by laboratory heating regimes , 2007 .

[83]  Patricia Warke,et al.  Processes of Urban Stone Decay , 1996 .

[84]  Heather Viles,et al.  Green walls?: integrated laboratory and field testing of the effectiveness of soft wall capping in conserving ruins , 2007, Geological Society, London, Special Publications.

[85]  Heather Viles,et al.  Experimental investigations into the interactions between moisture, rock surface temperatures and an epilithic lichen cover in the bioprotection of limestone , 2003 .

[86]  H. A. Viles,et al.  Field and laboratory approaches to limestone weathering , 1998, Quarterly Journal of Engineering Geology.

[87]  T. Meierding Marble Tombstone Weathering and Air Pollution in North America , 1993 .

[88]  G. C. Wood,et al.  Laboratory exposure systems to simulate atmospheric degradation of building stone under dry and wet deposition conditions , 1990 .

[89]  R. D. Wakefield,et al.  Aspects of Stone Weathering, Decay and Conservation , 2001 .

[90]  A. Goudie,et al.  Monitoring of rapid salt weathering in the central Namib Desert using limestone blocks , 1997 .

[91]  Heather Viles,et al.  Can stone decay be chaotic , 2005 .

[92]  Patricia Warke,et al.  Salt-weathering simulations under hot desert conditions: agents of enlightenment or perpetuators of preconceptions? , 2005 .

[93]  A. Goudie,et al.  The origin and evolution of footslope ramps in the sandstone desert environment of south-west Jordan , 2005 .

[94]  Peter Brimblecombe,et al.  Damage to Buildings from Future Climate and Pollution , 2007 .

[95]  D. Robinson,et al.  Weathering of sandstone by the combined action of frost and salt , 1981 .

[96]  Bernard Smith,et al.  A simulation study of salt weathering in hot deserts , 1983 .

[97]  Peter Brimblecombe,et al.  Carbon in black crusts from the Tower of London. , 2007, Environmental science & technology.