TY - JOUR T1 - Evaluation of ceramic bodies’ plasticity based on dried bending strength as a function of die-pressing pressure TT - ارزیابی پلاستی‌سیته بدنه‌های سرامیکی بر اساس رابطه استحکام خمشی خشک – فشار پرس JF - ijcse JO - ijcse VL - 4 IS - 1 UR - http://ijcse.ir/article-1-316-en.html Y1 - 2015 SP - 0 EP - 0 KW - Plasticity KW - die-pressing pressure KW - dried bending strength KW - plasticity exponent N2 - Plasticity as an important property in clay-water systems is identified as a permanent deformation with no rupture of the material under a consistent, defined, and external force greater than its critical tolerance, which remains in force even after removal or lessening the applied force. In spite of the introduction of various methods to measure the plasticity and determine the optimum water content in a clayey ceramic body, there is not a general procedure for all the ceramic bodies containing low or high plasticity materials. In this paper, physical properties of ceramic bodies consist of two raw materials, high plasticity Soravejin Bentonite (B-S) and low plasticity Zenouz clayey quartz (Z-Q) in a weight ratio of 100:0, 67:33, 33:67, and 0:100 were investigated. According to the dried strength data as a function of die-pressing pressure, an index named as “plasticity exponent” was defined in order to compare the plasticity of ceramic bodies. This new method, which can simulate actual conditions of processing and production in the wall/floor tile and pressed-ceramic factories, is an easy test route, and obtains the authentic results. M3 ER -