strength of dolerite and granite

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  • The Effect of Maximum Coarse Aggregate Size on the ...

    strength of 28 day concrete was therefore found to be 8mm for the water/cement ratio of 0.63. The analysis ... quart-dolerite, quartzite, gneisses, granites, limestone, ... granite, and river gravel influence the strength of concrete and established that aggregate type has effect on the compressive strength of normal concrete, and that

  • How can decomposed Dolerite Dykes affect slope stability?

    Decomposed dolerite dykes contain high clay content display high plasticity. Moreover, the material is generally of low permeability than decomposed granite which is found in many slopes. The presence of decomposed dolerite dykes in a direction parallel to slope surface may cause slope failure after heavy and prolonged rainfall.

  • Chapter 4 Engineering Classification of Rock Materials

    Table 4D6 Hardness and unconfined compressive strength 4D3 Table 4E1 Line survey data 4E1 Table 4E2 Joint set spacing categories 4E1 Part 631 National Engineering Handbook Engineering Classification of Rock Materials Chapter 4 (210VINEH, Amend. 55, January 2012) 4v

  • CHAPTER FOUR RESULTS OF THE INVESTIGATION

    Granite (5A) 31, II 6,26 Dolerite (50) 31,03 0 Riolite (6A) 35,03 11,91 C. Metamorphic Rocks Quartzite (IA) 30,42 8,59 ... Table 4. 5 Shear strength parameters of Granite as determined during Phase 1 Discussion The granite specimens were moderately hard with rough surfaces. The friction angles for

  • The Principal Hugoniot and Dynamic Strength of Dolerite ...

    The Principal Hugoniot and Dynamic Strength of Dolerite under Shock Compression ... [28,29], Bukit Timah granite [30], Swedish gabbro and Loughborough granite [31], Berea sandstone [32], dolerite ...

  • Aggregate - AfriSam

    the crushing strength of broken rock. These results do not necessarily relate to the flexural or compressive strength of concrete made with that aggregate, but are a useful index of overall quality. Normal values for ACV range from 14 to 30%, and for 10% FACT from 100kN to 300kN. There is generally good correlation between ACV and 10% FACT values.

  • Choice of Reservoir Site: 3 Factors | Geology

    The strength of the rock, its structure and permeability are the important properties governing their suitability in foundations. From their suitability point of view the rocks may be divided into five main groups, namely the strong massive rocks, cavernous rocks, thin bedded sediments, weak rocks and the unconsolidated rocks.

  • Estimating Weak Rock Strength

    Jan 03, 2018· Factors Controlling the Strength of Weak Rock Masses: For the purposes of this paper a weak rock mass is defined as any rock mass in which the effective shear strength parameters are less than: effective cohesion, c = 25 psi (0.2 Mpa) effective friction angle, ∅ =

  • Foundations - Crushing Strength

    The strength of a rock will depend upon its - Quality The degree of weathering Presence of micro-cracks The strength of a rock mass will depend upon - The number of cracks and joints The nature of their infilling material Whether there are any rock-to-rock contacts across the joints Planarity and continuity of seams and foliations

  • Effects of quenching cycle on tensile strength of granite ...

    Fang (2006) investigated the effects of cyclic temperature on the compressive strength, strain, and elastic modulus of Table 1 Changes in appearance of limestone, sandstone, marble, and granite ...

  • dolerite hardness

    This range of densities can also be attributed to a rock's porosity (the amount of open space between mineral grains). Fine-grained and lower porosity igneous rocks, such as basalt and diabase (dolerite) are generally higher in rock hardness than that of coarser grained igneous rocks, such as granite, diorite, and gabbro. or 1 nonconsecutive hour.

  • 11 Rock mass properties

    situ rock mass strength. Laboratory tests and field studies on excellent quality Lac du Bonnet granite, reported by Martin and Chandler (1994), show that the in situ strength of this rock is only about 70% of that measured in the laboratory. This appears to be due to damage resulting from micro-cracking of the rock which initiates

  • Variability in Rock Strength Prediction Using Ultrasonic ...

    Three rocks - biotite granite, dolerite, and marble - were studied for the use of ultrasonic pulse velocity in predicting their uniaxial compressive strength. The rocks differed in mineralogy, texture, and strength. The mineralogy and texture influence to varying degree the strength and the pulse velocity. Correlations between the compressive strength and the sonic velocity were highest in the ...

  • Geological and Geophysical Investigations on Black Granite ...

    Dec 04, 2019· Same as granites that is commonly used as aggregate source, dolerite is also an important part of the construction industry. It is being used as dimension stone, flooring tiles and paving materials. All over the world dolerite is famous for kitchen counter tops due to its high strength and attractive quality polishing.

  • On the Residual Strength of Rocks and Rockmasses | Request PDF

    The ultimate strength of Westerly granite above 22000 psi confining pressure and in Frederick diabase is controlled by faulting. At lower confining pressure faulting in granite occurs only in the ...

  • Erecting an Obelisk: A Monument of Egyptian Grandeur

    Dec 01, 2017· Granite was used in obelisk construction, especially large structures, because it is a stone material with an internal structural strength that can support its own weight. When you pivot it, you dont want it just to break like a piece of macaroni would.

  • Engineering Geological Characteristics of Quartzite Types ...

    They found that concrete made with granite and quartzite as mineral aggregates gave different concrete strength values. In addition to granite and quartzite, Lollino et al (2014) have also listed other rocks for producing mineral aggregates including igneous rocks such as dolerite and gabbro.

  • Advantages of granite in metrology | GMT Metrology

    This is one of the advantages of granite in metrology. Studies on igneous rocks such as Granite and Dolerite showed that: The igneous rock has pores and capillaries; The material consists of distinctly different crystals of different materials; As stated above granite has pores and these can have with them entrapped moisture.

  • Rupture Probability of Type of coarse aggregate on ...

    Granite, Dolerite, Quartzite except River gravel exhibits crystalline texture (rough surface). This type of texture enhances mechanical bonding between the matrix and the aggregate and there by influence the RPCA. In spite of higher bond strength, RPCA of concrete made of Quartzite and Dolerite have shown lower RPCA due

  • Foundations - Crushing Strength

    The strength of a rockwill depend upon its - Quality The degree of weathering Presence of micro-cracks The strength of a rock masswill depend upon - The number of cracks and joints The nature of their infilling material Whether there are any rock-to-rock contacts across the joints Planarity and continuity of seams and foliations

  • ROCK STRENGTH, ROCK BRITTLENESS AND BLAST

    Granite Dolerite Absolute brittleness ductility Sandstone - Energy stored in the rock specimen depends ... stress equals the compressive strength is sufficient to maintain fracture propagation until the specimen has lost virtually all strength _ Obviously, class II behavior cannot be established by way of ...

  • Geological and Geophysical Investigations on Black Granite ...

    Dec 04, 2019· Same as granites that is commonly used as aggregate source, dolerite is also an important part of the construction industry. It is being used as dimension stone, flooring tiles and paving materials. All over the world dolerite is famous for kitchen counter tops due to its high strength and attractive quality polishing.

  • Alternative Approach to Clay Stabilization Using Granite ...

    Mar 13, 2017· This paper describes the results of an investigation on the effect of two readily-available materials, namely granite and dolerite dusts on the properties of a tropical expansive soil from southeast Nigeria. The aim was to evaluate their use as potential stabilizing agents. Standard compaction, California bearing ratio (CBR), and Atterberg limit tests were performed on the natural expansive ...

  • Impact of aggregate type and size and mineral admixtures ...

    Dec 30, 2020· The compressive strength and permeability of pervious concrete with granite and dolerite for porosity of 18% are displayed in Fig. 2. As shown in Fig. 2 a, the pervious concrete specimen, both G1 and D1, compressive strength increases and

  • (DOC) Project Report - Granite Processing | Nitin Kedia ...

    Project Report - Granite Processing. It should be clearly noted that India is not the only country engaged in granite industry. At present 39 countries the world over are in granite industry. Of those nine countries can be said to be the leaders having captures sizeable chunk of the market. India occupies the seventh position in the list and ...

  • STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 ...

    strength is scale dependent and varies with the volume of rock under consideration. The modes of failure of intact rock are multiple. Rock can fail in tension, compression or shear. ... Granite Basalt Gneiss Schist Quart-zite Marble Lime-stone Sand-stone Shale Av. Co Max. Co Min. Co Range No. of samples 181.7 324.0 48.8 275.2 26 214.1 358.6 104 ...

  • compressive strength and the factor m in Hoek-Brown ...

    Normal variation of compressive strength and the factor m in Hoek-Brown failure ... Granite gneiss Greywacke 80 Limestone 65 Mudstone Gneiss Shale 19 Sandstone Siltstone 3' Tuff 60' Igneous rocks 75' Andesite Anorthosite Mica gneiss Basalt Diabase (dolerite) Mica schist Diorite 65 Gabbro 95 Granite Phyllite (30) Granodiorite Monzonite 125

  • Compression and Tension Strength of some common Materials

    Trap rock. 20000. 140. 800. 5.5. 1 MPa = 106 Pa = 1 N/mm2= 145.0 psi (lbf/in2) Sponsored Links. Material Properties - Material properties for gases, fluids and solids -

  • (PDF) Construction material prospects of granitic and ...

    Mean sulphate soundness values of the Mansehra Granite (gneissic and massive), Hakale Granite, quartzite and dolerite (2.19-4.07) are within limits for road aggregate (Table 2). 6C o n c l u s i o nThe laboratory tests performed on Mansehra Granite, Hakale Granite, quartzite and dolerite reveal that these rocks are potential source of dimension ...

  • 7 Strength - ScienceDirect

    Jan 01, 2006· Rock Type b Tuff, Shale, Limestone Siltstone, mudstone Quartzite, Sandstone, Dolerite Norite, Granite, Quartz diorite, Chert where O'ln and O'3n are the normalized effective principal stresses at failure, obtained by dividing the effective principal stresses, O'l and o'3, by the relevant unconfined compressive strength, oc; and B and M are ...

  • granite | Composition, Properties, Types, & Uses | Britannica

    Mar 25, 2021· Granite, coarse- or medium-grained intrusive igneous rock that is rich in quartz and feldspar; it is the most common plutonic rock of the Earths crust, forming by the cooling of magma (silicate melt) at depth. Learn more about the properties and uses of granite in this article.

  • Diabase - Igneous Rocks

    Diabase is composed of plagioclase feldspar (mostly labradorite) and pyroxene ().The crystals that make up dolerite are usually visible to the naked eye, but sometimes porphyritic rocks of basaltic composition with pyroxene and especially plagioclase phenocrysts are also named that way. Ophitic texture (randomly oriented plagioclase laths enclosed by pyroxene grains) is a characteristic ...

  • Influence of mineralogical and chemical composition of ...

    The strength and adhesion properties are greatly influenced by mineralogical and chemical composition of aggregates. Aggregates selected for this research work were from 9 different regions based on geological classification & all of them belongs to igneous group; Granite (5), Basalt (2) and Dolerite (2).

  • Impact of aggregate type and size and mineral admixtures ...

    Dec 30, 2020· Test results show that higher compressive strength and permeability are obtained in pervious concrete with dolerite aggregate compared to pervious concrete with granite aggregate. The optimum porosity and w/c for pervious concrete with both dolerite and granite are 18% and 0.25, respectively, in the studied ranges.

  • Black dimensional stones: geology, technical properties ...

    Dec 07, 2010· The flexural strength values vary between 46.06 MPa in the z-direction and 52.75 MPa in the y-direction for the Absolute Black dolerite, and between 35.72 MPa in the x-direction and 30.81 MPa in the y-direction for the Moderate Black dolerite. The flexural strength values for basic plutonic rocks are around 530 MPa (Mosch 2008) (Fig. 27c, d ...

  • Correlation between Uniaxial Compressive Strength and ...

    the prediction of compressive strength for rocks such as Dolerite, Norite and Pyroxenite. According to ISRM commission on Standardization of Laboratory and Field Test report [8], the compressive strength is 20-25 times Is. However, it is also reported that in tests

  • CLASSIFICATION // CHARACTERIZATION OF SOME ROCK

    Point load strength Is = 1 - 2 2 - 4 4 - 10 > 10 It should be noted that the boundary between rock and soil is defined in terms of the uniaxial compressive strength and not i n terms of weathering. A material with the strength 1 MPa is considered as a rock.

  • The relationship between rock mass quality and ease of ...

    Limestone, dolerite, granite, shale, ballclay and chinaclay from south west England have been classified in terms of rock mass quality by three different systems: point load strength and fracture spacing, the CSIR Rock Mass Rating and the NGI Quality Index system. Comparison with excavation practice in quarries in these rock masses indicates that the CSIR Rock Mass

  • Compression and Tension Strength of some common Materials

    Related Topics . Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more ; Related Documents . Brick Densities - Densities of common types of bricks; Bricks - Quantity and Mortar Consumption - Estimating required quantity of bricks and mortar ; Concrete Properties - Properties of normal strength Portland cement concrete

  • Some properties of soils on sandstone, granite and ...

    siltstone (Mathinna beds), Devonian granite and Jurassic dolerite (Table 1). The degree of weathering of substrates varies from weak or moderate for soils formed on dolerite to mainly strongly weathered for substrates on granite and sedimentary rocks. Soils sampled under wet forest all occur at higher altitudes than their counterparts under dry ...

  • Division of Mines and Mineral Resources - Report 1991/22

    Jurassic dolerite. The estimated volume of dolerite is of the order of 15 000 kIn3 (Hergt et aI., 1989). Dolerite is composed of two essential and several accessory minerals. The essential minerals are plagioclase feldspar and pyroxene, which together constitute between about 60% and 80% of the total rock composition. The

  • Rock mass properties - Rocscience Inc.

    Table 2: Field estimates of uniaxial compressive strength. Grade* Term Uniaxial Comp. Strength (MPa) Point Load Index (MPa) Field estimate of strength Examples R6 Extremely Strong > 250 >10 Specimen can only be chipped with a geological hammer Fresh basalt, chert, diabase, gneiss, granite, quartzite R5 Very strong 100 - 250

  • Comparative Evaluation of Dolerite and Syenite as Crushed ...

    Dolerite and syenite were comparatively studied and evaluated for their potential as crushed stone for civil engineering construction. Properties of the rocks tested included specific gravity, moisture absorption, Schmidt hammer rebound, point-load strength, unconfined compressive strength, Los Angeles abrasion, aggregate crushing value, sodium sulphate soundness, and ultrasound velocity.

  • Some Useful Numbers - Jackson School of Geosciences

    Water 0 m/sec (because no shear strength) Oil 0 m/sec (because no shear strength) Air 0 m/sec (because no shear strength) Limestone 3100 m/sec Sandstone 2400 m/sec Dolomite 3000 m/sec Shale 2600 m/sec Granite 3400-3600 m/sec Dolerite 3500-3600 m/sec Salt 2700 m/sec Resistivity Marble 5 x 107-109 Ohm-m Mica 1011-1014 Ohm-m

  • Granite - Wikipedia

    Granite (/ ˈ ɡ r æ n ɪ t /) is a coarse-grained igneous rock composed mostly of quartz, alkali feldspar, and plagioclase forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground is common in the Earth's continental crust, where it is found in various kinds of igneous intrusions.These range in size from dikes only a few inches ...