This paper presents the results of characterization alumina ball size distribution in mill a crushing and grinding plant. The was unloaded balls were sieved. Then, adjusted to three kinds models; two them are traditional models Rosin-Rammler Gates-Gaudin-Schumann. third model applied Swebrec function, which has been successfully used on fragmented rock distribution. best adjustment for obtained...

The current literature includes limited information on the classification precision of Bayes estimation for latent class analysis (BLCA). (1) Objectives: present study compared BLCA with robust maximum likelihood (MLR) procedure, which is default procedure Mplus 8.0 software. (2) Method: Markov chain Monte Carlo simulations were used to estimate two-, three-, and four-class models measured by f...

The development of the mesoscopic material structure during the hydration of ordinary Portland cement paste is studied by small-angle neutron scattering. Results on the time dependence of radii of gyration (Guinier region) and exponents (Porod region) are given and discussed. Introduction Building materials like hardened cement are heterogeneous. Their useful properties (as strength, porosity, ...

The demand for natural aggregates has increased in recent years because of diverse environmental interests. Consequently, its cost soared astronomically and the utilization lateritic soil low-cost roads been an attractive option. In most cases during road construction, unprecedented conditions may lead to delays compaction treated after mixing operation placing had taken place. Thus, this study...

Colloidal silica bonded refractory castables have been developed recently. It was found that colloidal silica is one of the best binders can substitute other binders such as cement in No Cement Castable (NCC) and Ultra Low Cement Castable (ULCC) refractories. Also composition of colloidal silica with appropriate additives resulted in a gel form which makes the initial strength. Moreover, the na...

the berriasian-valanginian fahliyan formation forms one of the giant reservoirs in the subsurface of the abadan plain, onshore iran. a detailed petrographical analysis of the available cores and thin sections revealed that the different diagenetic parameters influenced the reservoir quality of the fahliyan formation in this field. the fahliyan formation has been influenced by three diagenetic e...

We report on the synthesis of size-classified silicon nanocrystals by differential mobility classification of a polydisperse ultrafine silicon aerosol. Using the described technique, the average nanocrystal size can be tuned by simply adjusting an electric field. Samples of nonagglomerated silicon nanocrystals have been obtained and size control has been achieved within 15%–20% in the 2–10 nm s...