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SILICA FUME PASTE CEMENTING OF COAL MINE ROOF - PASTE FILLER AND CRACK STRENGTHENING
Abstract
In this study, the geomechanical properties of the heterogeneous limestone rocks in ??rnak coal mine roof cemented at cracks and the effect of the qualities of cementing paste fill on strengthening by the different silica fume paste were investigated. For this purpose, uniaxial compressive strength, point load strength, impact resistance, friction with Abrasion Loss, Impact Abrasion Loss (Los Angeles Assay) tests were managed following the cemented 50x50x50mm blocks. Even the physical properties; density, water absorption rate and drying rate experiments and micro properties were examined. The rock types of ??rnak coal mine roof also were studied as resistance to acidic water. The chemical act on paste fill, giving place to protect the roof texture and the results of the scaling tests carried out by examining the textural characteristics to be strengthened. In the stable ground, the cracked side rock has to be covered and supported in order to avoid consolidation and rock bursting. This modified test also measures the impact resistance of rocks tested for use in the scaling to 30-40 cm lump massive rock (models in laboratory), the conditions and any seismicity in the area affecting the crack propagation. The pressure effect was investigated on the filled blocks depending on the rock type (porosity, overburden depth), geological and hydro geological conditions and any surcharge in the area affecting the crack propagation.
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References12
ASTM C 330, 2013. Standart Specifications For Lightweight Aggregates for Structural Concrete, ASTM, Philadelphia.
ASTM D6024-07, 2007. Standard test method for Ball Drop on Controlled Low Strength Materials, ASTM, Pennsylvania.
Bieniawski, Z.T. 1967. Mechanism of brittle failure of rock Part I - Theory of fracture process. I. J. of Rock Mech. and Min. Sc. and Geomech. Abstr. 4: 4, s. 395-406
Cohen MD, Bentur A (1988) Durability of Portland cement–silica fume pastes in magnesium sulfate and sodium sulfate solutions. ACI Mater J 85(3):148–157
Demirboğa, R., Orung, I., Gül, R., 2001, Effects of expanded perlite aggregate and mineral admixtures on the compressive strength of low-density concretes. Cement and Concrete Research, 31: s.1627–32
Demirdag S, Gündüz L , 2008. Strength properties of volcanic slag aggregate lightweight concrete for high performance masonry units. Construction Building Materials, 22:s.135–142
Gleize PJP, Müller A, Roman HR (2003) Microstructural investigation of a silica fume–cement–lime mortar. Cem Concr Compos 25:171–175
Grutzeck MW, Atkinson S, Roy Della M (1983) Mechanism of Hydration of condensed silica fume in calcium hydroxide solution, fly ash, silica fume, slag and other mineral by-products in concrete. American Concrete Institute Publication SP-79, Detroit, pp 643–665
Gündüz L, Sariisik A, Tozaçan B, Davraz M, Uğur İ, Çankıran O (1998) Pumice technology, vol 1. Süleyman Demirel University, Isparta. pp 275–285
Moulia, M., Khelafib H., 2008. Performance Characteristics Of Lightweight Aggregate Concrete Containing Natural Pozzolan, Building and Environment , 43, s. 31–36
Park, C. K. Noh, M. H. Park, T. H. , 2005. Rheological Properties Of Cementitious Materials Containing Mineral Admixtures, Cement And Concrete Research. s 842-849
Sellevold, EJ, Nilsen T (1987) Condensed silica fume in concrete: a world review. In: Malhotra VM (ed) Supplementary Cementing Materials for Concrete. CANMET, Ottawa, pp 165–243
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