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PMMA method

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Journal Article
Published: 01 November 2002
Journal of Sedimentary Research (2002) 72 (6): 937–943.
...S. Sammartino; M. Siitari-Kauppi; A. Meunier; P. Sardini; A. Bouchet; E. Tevissen Abstract Porosity of sedimentary rocks can be mapped and quantified by a new technique: the 14 C-PolyMethylMethAcrylate (PMMA) method. This imaging technique provides a porosity map drawn from physical information...
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Journal Article
Published: 01 August 2009
Journal of Sedimentary Research (2009) 79 (8): 584–592.
... imaging), a full analysis of IGV is difficult and time consuming since it necessitates a two-step process, at the scales of (1) macroporosity between the detrital grains, and (2) microporosity within the clay aggregates. The 14 C-PMMA method permits the mapping and quantification of the connected porosity...
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Series: Geological Society, London, Special Publications
Published: 01 January 2005
DOI: 10.1144/GSL.SP.2005.240.01.24
EISBN: 9781862394889
... vary greatly from one Palmottu sample to another. 14C PMMA impregnation method The 14 C-PMMA method developed by Hellmuth et al. (1993, 1994), uses a vacuum to impregnate decimetre-scale rock cores with 14 C-MMA. The subsequent procedures are irradiation polymerization...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2016
GSA Bulletin (2016) 128 (9-10): 1423–1438.
... chronosequence in east-central California. Fractures and other pores were examined using two complementary imaging techniques, X-ray computed tomography (XRCT) and a 14 C-PMMA ( 14 C-polymethylmethacrylate) method. The well-known XRCT method allows the investigation of three-dimensional (3-D) pore space. 14 C...
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Journal Article
Published: 01 July 2006
American Mineralogist (2006) 91 (7): 1069–1080.
...Paul Sardini; Marja Siitari-Kauppi; Daniel Beaufort; Karl-Heinz Hellmuth Abstract The 14 C-PMMA impregnation of rock samples and mineral staining methods provide the connected porosity map and the spatial distribution of mineral aggregates, respectively. Combined image analysis of mineral...
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Comparison of bulk porosities determined on different materials using diffe...
Published: 01 August 2009
Table 1 Comparison of bulk porosities determined on different materials using different methods. Φ w , Φ d , Φ Hg , and Φ 14C-PMMA are porosities measured from water saturation, pycnometry, mercury porosimetry, and 14 C-PMMA method, respectively.
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Homologous sections from (A)  14 C-polymethylmethacrylate ( 14 C-<span class="search-highlight">PMMA</span>) meth...
Published: 01 September 2016
Figure 2. Homologous sections from (A) 14 C-polymethylmethacrylate ( 14 C-PMMA) method and (B) X-ray computed tomography (XRCT) method. (C) Two sections superimposed through the use of the macrophotograph. Note the same location of mafic minerals in B and C. Sample of Ti1 moraine (surface age
Journal Article
Published: 01 October 2006
Clays and Clay Minerals (2006) 54 (5): 541–554.
...-dimensional (2D) or three-dimensional (3D) geometry studies in order to correlate the porous network with the mineralogical rock composition at various observation scales: (1) 2D decimetre scale using 14 C-PMMA impregnation method associated with autoradiograph films and optical digital image-processing...
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Journal Article
Published: 01 October 2010
American Mineralogist (2010) 95 (10): 1389–1398.
.... ( 2005 ) 14 C-PMMA impregnation method and image analysis as a tool to characterize porosity of rock forming minerals. In P.K. Harvey, T.S. Brewer, P.A. Pezard, V.A. Petrov, Eds., Petrophysical Properties of Crystalline Rocks, 240, p. 335–342. Geological Society Special Publication, London. Olgilvie...
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Journal Article
Journal: Clay Minerals
Published: 01 December 2018
Clay Minerals (2018) 53 (4): 643–656.
... and modified HNTs: (a1,a2) pristine HNTs; (b1,b2) HNT-SDS; (c1,c2) HNT-PMMA; (d1,d2) HNT-COOH. Modification of HNT surfaces was done using three different modifiers. The detailed preparation method is given in the following sections. Halloysite nanotubes were first modified by an MPS coupling...
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Journal Article
Published: 01 June 2005
Journal of Environmental and Engineering Geophysics (2005) 10 (2): 151–162.
.... Model 3 comprised a sloping PMMA plate on the order of two percent, with average thickness comparable to models 1 and 2, to test the limitations of the 1D assumption. Surface-wave methods are increasingly used in civil engineering applications to evaluate soil shear modulus with depth ( Rix et al...
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Journal Article
Journal: Geophysics
Published: 25 September 2015
Geophysics (2015) 80 (6): D553–D563.
... a petrophysical analysis alone. Adam et al. (2014) shows that physical heterogeneity in terms of organics in shale samples does not always correspond with elastic heterogeneity. The method proposed herein could help unravel the rock microstructure as sensed by elastic waves. Integrating full-wavefield elastic...
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Saucer-shaped sill geometry in nature and in models from published examples...
Published: 29 May 2020
. (2008) used glass or polymethyl methacrylate (PMMA) and water; they also introduced dimensionless parameter χ, where χ = σ r (see the Methods section in the text). K c is 1.3 and 0.6 MPa m 1/2 for their PMMA and glass, respectively. Haug et al. (2017) used rigid-plasticity approach to simulate
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Saucer-shaped sill geometry in nature and in models from published examples...
Published: 29 May 2020
. (2008) used glass or polymethyl methacrylate (PMMA) and water; they also introduced dimensionless parameter χ, where χ = σ r (see the Methods section in the text). K c is 1.3 and 0.6 MPa m 1/2 for their PMMA and glass, respectively. Haug et al. (2017) used rigid-plasticity approach to simulate
Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP302.8
EISBN: 9781862395503
... in analogue experiments performed in polymethyl methacrylate (PMMA) and glass. The experimental fractures curve towards the surface to become saucer-shaped, which is consistent with many field observations of dolerite sills. The curvature of the saucer is shown to decrease as the in situ stress acting...
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Journal Article
Published: 01 December 2015
Vadose Zone Journal (2015) 14 (12): vzj2014.06.0086.
...Hanna Ouaknin; Yael Meyouhas; Noam Weisbrod; Alex Furman Abstract Time domain reflectometry (TDR) is a simple and popular method for measuring soil water content. The TDR measures a weighted average of the dielectric permittivity of the soil along and around a probe. Under some experimental...
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Journal Article
Journal: Geophysics
Published: 01 November 2018
Geophysics (2018) 83 (6): E423–E434.
... load and AE counts over time for all three kinds of specimen material, coal, marble, and PMMA. It can be seen from Figure  4a and 4b that except sharply increased AE count when fractures occur (where the load drops sharply), many AE signals were detected during the whole process of loading for coal...
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Journal Article
Published: 01 June 1956
American Mineralogist (1956) 41 (5-6): 512–513.
... methods. Aminoff, from morphological investigation, found that barylite belonged to the orthorhombic holohedral class (D 2h — mmm). The x -ray study by Ygberg reduced the space group to two possible choices, D 2h 5 — Pmma and D 2h 16 — Pnma , of which he considered the latter to be the more plausible...
Journal Article
Journal: Geophysics
Published: 16 February 2017
Geophysics (2017) 82 (2): M19–M36.
... of the calibration and error estimation methods using a sample of PMMA that conforms to shear measurements made in the literature. Our apparatus is well-suited for the measurement of fractured samples under a range of normal stresses, from fully clamped (intact) to nearly open fractures. We observe very different...
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Schematics of the experimental setup and diagnostic <span class="search-highlight">methods</span> for the earthqu...
Published: 18 November 2022
Figure 1. Schematics of the experimental setup and diagnostic methods for the earthquake dynamic triggering of earthquake experiments. (a) The experimental setup consists of the biaxial‐loading fault model made of polymethyl methacrylate (PMMA; shear‐wave velocity C S = 1.21    km / s