The slaking resistance of the aggregate was appreciably improved due to the promotion of densification, the formation of CaO solid solution (while MgO added) and the modification of microstructure. In another study [78] the effect of NiO addition on the sintering properties of dolomite clinker was investigated.
Simultaneous enhancements of UV resistance and mechanical properties of polypropylene by incorporation of dopamine-modified clay ACS Appl Mater Interfaces. 2013 Feb;5(4):1302-9. doi: 10.1021/am3024405. Epub 2013 Feb 8. Authors Si Lei Phua 1 ...
Dec 04, 2019 Besides, the mechanical and thermal properties of natural fiber based polymer composites have been reported to improve with dolomite content. For example, Shamsuri et al [ 34 ] claimed that mechanical properties viz. tensile strength, tensile modulus and impact strength of Kenaf fiber reinforced low-density polyethylene composites improved significantly with the addition of dolomite …
Sep 01, 2020 Danza et al. compared granite, limestone, dolomite, and natural sandstone and concluded that the shape and structure of aggregates affect the mechanical properties of concrete. Kılıc et al. [ 14 ] studied the effects of five different aggregate types (gabbro, basalt, tetragonal, limestone, and sandstone) on the compressive strength, flexural ...
Asian Journal of Chemistry Vol. 22, No. 9 (2010), 6687-6692 Effect of Marble Powder and Dolomite on the Mechanical Properties and the Thermal Stability of Poly(vinyl chloride) BOUNAMOUS GHADA, ZAGHDOUDI RACHIDA*, MEGHEZZI AHMED† and DJAZI FAYCAL Laboratory of Research in Physics and Chemistry (LRPCSI), Department of Fundamental Science,
To find the effect of the Fly ash, Dolomite Powder and quarry dust on the mechanical properties of OPC concrete. To know the behavior of various concrete mixtures with Fly ash and Dolomite Powder under compression at 90 days(30days in normal water curing and 60days curing in acid and in …
The waste material from palm oil industry has been increasing since Malaysia was the world largest exported of palm oil mill. The waste such as palm fibers, nut shells, palm kernel and empty fruit bunches are the solid waste the obtained from palm oil processing for oil extraction. When these wastes were incinerated, the waste from the burning process known as boiler ash was obtained at the ...
Sep 29, 2020 This study investigated the sulfate resistance of Portland-dolomite cement (PDC) cured at different temperatures. Mortars of Portland cement (PC) and PDC with different dosages of dolomite, 10, 20, 30% by weight, were cured in water at 20 C and 60 C for 28 days before immersed in 50 g/L Na2SO4 solution at 20 C. In addition to monitoring the length changes of mortars, MIP and …
Mar 16, 2011 This work is devoted to structural and mechanical properties of CaMg(CO 3) 2 –dolomite mineral. From Birch–Murnaghan equation of state (BM‐EoS) applied to the energy–volume data of the dolomite polymorph, we obtain a bulk modulus of 93.7 GPa with a pressure derivative of 4.7, which show suitable agreement with experimental data.
Effects of Dolomite on Thermal Performance of Intumescent Fire Retardant thermal insulation, mechanical properties and excellent chemical resistance [6] the coating cannot withstand the mechanical stress induced by a fire/or by other external constrains III The coating releases organic gases (potentially toxic) which are undesirable in a
This research work is to characterize dolomite found in southern Nigeria and evaluates the mechanical properties of Dolomite as filler in Polyester. The use of Dolomite as one of the major fillers in Polyester was harnessed. ... water-resistance coating, chemical and heat resistant moldings and laminates, and many other application [7].
Jul 27, 2021 Strength, compressive, tensile, bending, impact, hardness, plasticity, elasticity, and abrasion resistance are all significant mechanical properties for building materials. Strength The relevance of researching multiple strengths is underlined by the fact that materials like stones and concrete have strong compressive strength but poor tensile ...
However dolomite releases the CO2 gas, which is less dangerous as compared to CO. We are expecting that Mg reaction with dolomite will also release CO2 (as per processing temperature). In the present study, Dolomite is used as a foaming agent for the fabrication of Mg-foam and the mechanical properties are also studied. A.
The resistance of mortars made of dolomite and quartz aggregate with and without polypropylene fibers has been studied at a nominal heating rate of 30 C/min from room temperature up to 1000 C. It is demonstrated that the key parameters that affect the performance of plain mortars are volume instability, phase transformation, aggregate ...
effects of dolomite content on flammability, thermal and mechanical properties of PBT/dolomite composites. 2. EXPErIMENTAL 2.1 Materials Dolomite mineral used in this study was collected from selected dolomite quarries in Sungai Siput, Perak, Malaysia. The original samples were in …
For dolomite Geochemical properties of dolomite show that it can be used in the steel industry or agriculture as amendments. Its mechanical properties notably its low wear (MDE = 11%) its high resistance to fragmentation (LA = 19%), its high compressive strength (MPa = 118) and high density, describe it as good material in civil engineering. 5.
Enhanced thermal stability and flammability properties of dolomite filled polymer composites has been attributed to its inherent endothermic decomposition and dilution effect via water and gas release as well as its formation of protective char layer in the
Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg (CO 3) 2. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Limestone that contains some dolomite is known as dolomitic limestone.
mechanical tests compared with the reference mixture. Keywords: - Dolomite powder, ... Self compacting concrete is a concrete which has little resistance to flow so that it can be ... viscosity and influencing the rheological properties of the mix. The dolomite powder which is a natural form
3.5 Mechanical properties. Figure 6 shows the effect of firing temperature and dolomite additions on the cold crushing strength (CCS) of the samples D1-D4. It was observed that the CCS values increased by increasing the firing temperature from 1200 C to 1400 C due to an increase in the sintering process and a decrease in the samples porosity.
Sep 30, 2020 Properties of dolomite aggregate. Dolomite aggregate can be used as an alternative to gravel aggregates in the production of simple concrete, as well as for floor, contractor, or hydrotechnical concretes. This is due to similar functional properties such as resistance to grinding and abrasion,
The result of the mechanical test revealed increase effect of the dolomite at 20% and 30% on the Modulus and Hardness of the composite. This makes the dolomite-polyester composite material more suitable for industrial application especially for structural application where high hardness and modulus properties are required.
Keywords: Mechanical properties; Galalalimestone; Dolomite, Middle Eocene, Porosity, Abrasion resistance. 1. Introduction Natural stone is one of the most common construction materials, to be used for interior and exterior walls of buildings. Natural stone must satisfy standardized physical and mechanical requirements Yagiz1.The
To find the effect of the Fly ash, Dolomite Powder and quarry dust on the mechanical properties of OPC concrete. To know the behavior of various concrete mixtures with Fly ash and Dolomite Powder under compression at 90 days(30days in normal water curing and 60days curing in acid and in …
These results exhibit the alkali-activated waste dolomite powder has excellent mechanical properties and heat-resistance temperature, which not only provides an efficient, green path for waste ...
This study investigated the sulfate resistance of Portland-dolomite cement (PDC) cured at different temperatures. Mortars of Portland cement (PC) and PDC with different dosages of dolomite, 10, 20, 30% by weight, were cured in water at 20 C and 60 C for 28 days before immersed in 50 g/L Na2SO4 solution at 20 C. In addition to monitoring the length changes of mortars, MIP and XRD were ...
The result of the mechanical test revealed increase effect of the dolomite at 20% and 30% on the Modulus and Hardness of the composite. This makes the dolomite-polyester composite material more suitable for industrial application especially for structural application where high hardness and modulus properties are required.
Residual Mechanical Properties of Concrete Made ... have to resistance at high temperatures, and concrete with such aggregates performs much better than similar concretes containing granite aggregate [3]. Clay bricks and roof tile aggregates are ... processing of dolomite because it already was separated into fractions. The bricks and roof ...
PP reinforced dolomite composites with various concentrations of dolomite (5, 10 and 15 wt%) were characterized by mechanical properties through tensile, impact and flexural test, morphological...
C mechanical properties (deformability, strength), C hydraulic properties (permeability, storativity), ... dolomite detach from the rest of the rock mass in the Spring and Summer seasons. ... assess the resistance offered by a rock sample to weakening and disintegration when subject to one (or several) cycle(s) of drying and wetting. ...
