Sandblast testing of rock

Verhoef, Peter N.W.

doi:10.1016/0148-9062(87)90526-2

Cited by 21 publications

(13 citation statements)

References 3 publications

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“…They differ from lateral cracks formed in isotropic brittle materials (see Table 4, upper row). This particular feature agrees with observations reported in [12] for a number of rock materials; this author attributed it to the existence of pre-existing cracks. Lateral vent cracks do not grow to the free surface immediately, but follow either weak mineral interfaces or pre-existing cracks.…”

Section: Resultssupporting

confidence: 91%

“…As can be seen in Fig. 3d, the calcitic matrix between impact sites is exposed, and the material is removed [12,13]; "L" -Laterally cracked sections. (d) Fracture marks in quartz.…”

Section: Resultsmentioning

confidence: 99%

“…The upper theoretical limit (K 1 ¼1) is represented through aluminium. This isotropic ductile material is characterized by [12] as well as fracture lance formation (arrowed) described in [13]. Fracture direction from lower left to upper right.…”

Section: 44mentioning

confidence: 97%

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A transition function for the solid particle erosion of rocks

Momber

2015

Wear

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Section: Resultssupporting

confidence: 91%

“…As can be seen in Fig. 3d, the calcitic matrix between impact sites is exposed, and the material is removed [12,13]; "L" -Laterally cracked sections. (d) Fracture marks in quartz.…”

Section: Resultsmentioning

confidence: 99%

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A transition function for the solid particle erosion of rocks

Momber

2015

Wear

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“…He reviewed the qualitative relationship between petrography and the polishing of both natural and artificial aggregates. Verhoef [3] between petrographic properties and mechanical behavior of aggregates during re-texturing treatment.…”

Section: Introductionmentioning

confidence: 99%

Petrographic assessment of re-textured road surface aggregates

Kermani¹,

Safarzadeh²

2010

WIT Transactions on the Built Environment

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Since the costs of structural maintenance of slippery road surfaces are very high, re-texturing offers the potential for economically increasing a road's surface life without the addition of new material. Correctly using mechanical re-texturing techniques improves mechanical properties of the road stones. These techniques can be used in more sensitive areas to provide adequate surface skidding resistance.The main objective of the present research is to investigate material properties and performance in the laboratory of aggregates subjected to mechanical treatments (sand blasting) with a view to establish the cause of some aggregate material to benefit in terms of their Polished Stone Value (PSV) enhancement.Samples of aggregate from 35 quarries have been assembled and in the first stage a thin section of each aggregate was prepared (from at least six rock fragments of each individual aggregate) and their petrological properties determined. In the second stage, test specimens were made in accordance with the procedures described in BS812 Part 114 1989. Initially, the PSV of each aggregate sample was measured in a program of standard tests. The test specimen was subjected to a program of sand blasting treatments.The type of mechanical processes involved in re-texturing suggest the relevance of geological structure and properties in determining their degree of enhancement of surface texture for each specific aggregate. It was found that the surface texture resulting from erosion of the aggregates during re-texturing not only depends on their mineralogy, petrographic properties, differential wear, but, above all, mainly depends on the percentage of the soft mineral distribution over the whole matrix of the rock mass. The relationship between different surface

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“…Verhoef [10] attempted to use grit-blasting as a method to determine the resistance of rocks against abrasive wear. The author installed a so-called 'Sandblast Index' that may allow direct comparison of 204 A. W. Momber grit-blasting data.…”

Section: Introductionmentioning

confidence: 99%

Surface issues of profiled cementitious composites

Momber¹

2002

The Journal of Adhesion

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The paper provides a topography analysis performed on samples of hardened cement paste, mortar and concrete profiled by grit blasting. Macro-topography (profile) is evaluated by three-dimensional co-ordinate measurements, and microtopography (roughness) is investigated via contact angle measurements. The topography of the generated surface depends on the properties of the matrixaggregate-interface. The lower the bond, the rougher the surface. The microroughness of the aggregate surfaces increases due to grit blasting, but the adhesion properties, in terms of contact angle, do not necessarily improve. The contact angles depend on a balance between frictional force and capillary force and, therefore, are not a simple expression of the surface roughness.

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Sandblast testing of rock

Cited by 21 publications

References 3 publications

A transition function for the solid particle erosion of rocks

A transition function for the solid particle erosion of rocks

Petrographic assessment of re-textured road surface aggregates

Surface issues of profiled cementitious composites

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