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دانلود رایکان مقاله انگلیسی ISI با موضوع سیمان پرتلند عادی مخلوط شده با گرد فولاد بسیار ریز دارای محتوای اکسید روی بالا

عنوان فارسی مقاله:

سیمان پرتلند عادی مخلوط شده با گرد فولاد بسیار ریز دارای محتوای اکسید روی بالا

عنوان انگلیسی مقاله:

White Ordinary Portland Cement blended with superfine steel dust with high zinc oxide contents

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بخشی از مقاله انگلیسی :

2. Experimental

White Ordinary Portland Cement (WOPC) from Holcim S.A., Colombia (with max. 6.0 wt% MgO, and max. 3.5 wt% SO3) was used in combination with steel slag, a solid waste from Ternium Colombia. WOPC was used in order to qualitatively see the color changing in samples with the addition of slag waste. Two types of samples were investigated: cement paste with waste and cement mortar with waste. Samples of Portland cement paste with steel slag contents were obtained first by mixing mechanically the cement powder with deionized water, and then by adding the powder waste. For some compositions, sand was added as well. In order to cover many possible compositions and Water to Cement ratios (W/C), two experiments were made: a) samples keeping constant the water content over the total amount of solid powders, and b) samples keeping constant the W/C ratio. Thus, ratios from 0.4 to 1.8 of W/C were used, and content waste from 0.0 wt% to 80 wt % over the total powders content were reached. Sample compositions for cement paste with the slag using constant W and W/C ratios are summarized in Table 1a and b respectively, for which W: water, C: cement, and SL: steel slag. Table 2 summarizes the sample composition for the cement mortar with waste. These proportions for the mortar samples were one part of cement to one part of graded standard sand by weight and contaminant [36].