Cementation index

The limestone is generally calcined in shaft kilns [16.59], which must be controlled closely to ensure that as much of the silica and alumina as possible reacts, without sintering the free lime, lypical calcining temperatures are 950 to 1250 °C the required temperature rises as the cementation index (see section 26.9.2) increases (i.e. from feebly to eminently hydraulic limes). 

Hydraulic limes are also classified in terms of the cementation index (Cl) [26.45], based on the analysis of the lime. This is calculated by the following equation ... 

Cementation Index (Cl) is used to eategorise hydraulic limes (see seetion 16.10.1). 

Chemical analyses of separated binders establish the historic Roman cements at an average cementation index according to Eckel [5] of 1.5 within a range of 1.4 to 1.7. This index, the formula of which is given... 

Fig. 1. Phase equilibria ia the C—A—S (CaO—AI2O2—Si02) system (3,4) temperatures are ia °C. Shaded areas denote two Hquids compositional index marks on the triangle are indicated at 10% intervals B denotes cristobaUte [14464-46-17, and D denotes tridymite [15468-32-3] both of Si02 composition E is anorthite [1302-54-17, Al2CaSi20g G is muUite [55964-99-3]-, H, gehlenite [1302-56-3], Ca2Al2Si02 and J is the area of Pordand cement compositions.

The double prism consists of two similar prisms of flint-glass, each cemented into a metal mount and having a refractive index n, = 1 75 the fluid to be investigated (a few drops) is deposited between the two adjoining inner faces of the prisms in the form of a thin stratum (about 0 15 mm. thick). The former of the two prisms, that farther from the ttelescope (which can be folded up or be removed), serves solely for the purpose of illumination, while the bordw line is formed in the second flint prism. 

The main applications of coated cemented carbides are tips and blanks, indexable inserts, milling tools, turning, and boring tools and circular saws. 

Another barrier to achieving translucency is mismatch between the refractive indices of the glass and the matrix the refractive index of the glass is greater than that of the matrix, which causes light-scattering. The dental silicate cement tends to be naturally more translucent than the glass... 

Unconfined compressive strength of cohesive soil Unconfined compressive strength index of chemical-grouted soils Slump of portland cement concrete... 

For compacted, low-permeability soil liners, the U.S. EPA draft guidance recommends natural soil materials, such as clays and silts. However, soils amended or blended with different additives (e.g., lime, cement, bentonite clays, and borrow clays) may also meet the current selection criteria of low hydraulic conductivity, or permeability, and sufficient thickness to prevent hazardous constituent migration out of the landfill unit. Therefore, U.S. EPA does not exclude compacted soil liners that contain these amendments. Additional factors affecting the design and construction of CCLs include plasticity index (PI), Atterburg limits, grain sizes, clay mineralogy, and attenuation properties. 

In the case of those materials known to possess an adsorptive capacity towards cement constituents and the ability to reduce the paste viscosity, there is a linear correlation between the amount adsorbed on the surface and the reduction in paste viscosity at addition levels in the region of those normally used. This is shown in Fig. 1.18 [33]. These data can be used to obtain a viscosity reducing index for various materials by measuring the slope of the line. Some values are shown in... 

Material Viscosity reduction index (P m g ) (water cement ratio = 0.30)... 

Plastic bags Plastic beads Plastic bearing materials Plastic cements Plastic drums Plastic electronic packagf Plastic encapsulant Plastic fibers Plastic films Plastic hardcoats Plasticity Plasticity index Plasticity retention index Plasticization... 

Staff Portland Cement Plaster Stucco Manual, Portland Cement Association. Skokie, 1L. I99(i. hitpif/www.portccmcnl.org/index.usp Staff Anuiutl Book of ASTM Standards. 1997 Cement Lime Gypsum. American Society for Testing and Materials. West Conshnhocken. PA. 1997. http //www.ust nt.org/... 

Index Matching Material—A material, often a liquid or cement whose refractive index is nearly equal to the core index. Used to reduce Fresnel reflections from a fiber end face. 

The element calcium shows a spatial distribution similar to that of lead (Fig. 9-22 d). The locations of the concentration maxima are the same a small maximum has also arisen from the cement and slag mill in the north of the area investigated. There is no index value for calcium because calcium does not rank among the toxic elements. 

Cellulose esters of butyric and propionic acids have limited adhesive use. However, cellulose caprate, having a refractive index near that of glass and good resistance to photochemical change, is a useful hotmelt optical cement for the manufacture of compound lenses. 

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