Efficiency of grinding of powder (<0,15 mm) recycled from Civil Construction Waste (CCW) in the presence of additive
DOI:
https://doi.org/10.46421/enarc.v8i00.3018Keywords:
Construction and Demolition Waste (CDW), Grinding additives, Dispersing, Supplementary Cementitious Materials (SCMs)Abstract
This study evaluates the grinding efficiency of the particle size and the specific surface (BET) of Civil Construction Waste powders (RCCs). For this, concrete powder (PC) and mixed powder (PM) were used as references, obtained through comminution, respectively, of concrete specimens and mixed recycled sand (ceramic and cementitious materials). The RCC powders were submitted to the grinding process in a planetary ball mill at different times (30, 60, 120, 180, and 240 minutes), levels (0.05, 0.1, 0.5 and 1%), and types of additives (Propylene glycol, Sodium hexametaphosphate, and Triethanolamine). The results show that the most efficient treatment (grinding) for the concrete powder was 60 minutes in the presence of the Propylene glycol additive at a content of 1% para. For the mixed powder, should check other additive contents, in case there is a need for a finer material.
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