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MARBLE AND QUARRY DUST AS ADDITIVES IN CONCRETE
Page 1
Introduction
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Page 2
Why marble dust and quarry rock?
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Green Marble Mining at our Mines
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Characterization of waste
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Physical characteristics of marble sludge powder, quarry rock dust and river sand
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Chemical characteristics of marble sludge powder, quarry rock dust, river sand and Portland cement
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Heavy metal leachability of the waste
Toxicity characteristic leaching procedure (TCLP)
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TEST PROCEDURE
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Raw materials and test methods
Cement :-
Ordinary Portland Cement (43 Grade) with 28 percent normal consistency with specific surface 3300 cm2/g conforming to IS: 8112-1989 [8] was used.
Marble sludge powder :-
Marble sludge powder was obtained in wet form directly taken from deposits of marble factories.
Quarry rock dust :-
The quarry rock dust was obtained from local crusher at Kariapatti, Virudunagar District. The specific gravity of the quarry rock dust is 2.677. Moisture content and bulk density of waste are less than the sand properties.
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Fine aggregate :-
Medium size sand from Madurai Vaigai river with a modulus of fineness = 2.20; Specific gravity 2.677, normal grading with the silt content 0.8%.
Course aggregate :-
Crushed stone from Madurai district with a size of 5-20 mm and normal continuous grading was used. The content of flaky and elongated particles is <3%, the crushing index ≤6% and the specific gravity 2.738.
Water :-
A tap water available in the concrete laboratory was used in manufacturing the concrete. The qualities of water samples are uniform and potable.
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Mix proportion
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Slump, slump flow value and V- funnel time
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Page 13
Hardened mixture properties
Page 14
Durability of concrete in terms of
Durability studies
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Resistance to sulphate attack in term of Percentage of weight loss
The marble powder can reduce the content of calcium aluminate in cementitious material, leading to increase of sulphate resistance of concrete.
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Permeability of concrete specimen
Due to the pozzolanic and filling effects of the marble powder and quarry rock dust, there is more cementitious material formed with dense structure, therefore, it is easy to prepare a high impermeable concrete.
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Conclusions
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Architectural effect
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Page 20
REFERENCES
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5. http://flyashbricksinfo.com/construction/green-concrete containing-quarry-rock-dust-and-marble-sludge-powder-as fine aggregate.html
Concrete international
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