@article{Nithipaiboon_Prakaypan_Chakartnarodom_A Laitila_Kongkajun_2023, place={Bangkok, Thailand}, title={Impact of the Hybrid-Aluminum Additive on the Hydration Kinetics of Portland Cement in Fiber-Reinforced Cement Composites}, volume={10}, url={https://li02.tci-thaijo.org/index.php/ssstj/article/view/430}, DOI={10.53848/ssstj.v10i1.430}, abstractNote={<p><span id="page6R_mcid73" class="markedContent"><span dir="ltr" role="presentation">A hybrid</span></span><span id="page6R_mcid74" class="markedContent"><span dir="ltr" role="presentation">-</span></span><span id="page6R_mcid75" class="markedContent"><span dir="ltr" role="presentation">aluminum additive</span></span><span id="page6R_mcid76" class="markedContent"> <span dir="ltr" role="presentation">(</span></span><span id="page6R_mcid77" class="markedContent"><span dir="ltr" role="presentation">HAA</span></span><span id="page6R_mcid78" class="markedContent"><span dir="ltr" role="presentation">)</span></span><span id="page6R_mcid79" class="markedContent"> <span dir="ltr" role="presentation">synthesized from industrial wastes including aluminum dross and flue gas </span></span><span id="page6R_mcid80" class="markedContent"><span dir="ltr" role="presentation">desulfurized</span></span><span id="page6R_mcid81" class="markedContent"> <span dir="ltr" role="presentation">(</span></span><span id="page6R_mcid82" class="markedContent"><span dir="ltr" role="presentation">FGD</span></span><span id="page6R_mcid83" class="markedContent"><span dir="ltr" role="presentation">)</span></span><span id="page6R_mcid84" class="markedContent"> <span dir="ltr" role="presentation">gypsum was used as an additive for fiber</span></span><span id="page6R_mcid85" class="markedContent"><span dir="ltr" role="presentation">-</span></span><span id="page6R_mcid86" class="markedContent"><span dir="ltr" role="presentation">reinforced cement composites</span></span><span id="page6R_mcid87" class="markedContent"> <span dir="ltr" role="presentation">(</span></span><span id="page6R_mcid88" class="markedContent"><span dir="ltr" role="presentation">FRCC</span></span><span id="page6R_mcid89" class="markedContent"><span dir="ltr" role="presentation">).</span></span><span id="page6R_mcid90" class="markedContent"> <span dir="ltr" role="presentation">The impact </span></span><span id="page6R_mcid91" class="markedContent"><span dir="ltr" role="presentation">of this additive on hydration kinetics was observed by the temperature change over time for the various HAA </span></span><span id="page6R_mcid92" class="markedContent"><span dir="ltr" role="presentation">mixtures with ordinary Portland cement</span></span><span id="page6R_mcid93" class="markedContent"> <span dir="ltr" role="presentation">(</span></span><span id="page6R_mcid94" class="markedContent"><span dir="ltr" role="presentation">OPC</span></span><span id="page6R_mcid95" class="markedContent"><span dir="ltr" role="presentation">)</span></span><span id="page6R_mcid96" class="markedContent"><span dir="ltr" role="presentation">, sand, cellulose fibers, polyvinyl alcohol</span></span><span id="page6R_mcid97" class="markedContent"> <span dir="ltr" role="presentation">(</span></span><span id="page6R_mcid98" class="markedContent"><span dir="ltr" role="presentation">PVA</span></span><span id="page6R_mcid99" class="markedContent"><span dir="ltr" role="presentation">)</span></span><span id="page6R_mcid100" class="markedContent"> <span dir="ltr" role="presentation">fibers, and water, </span></span><span id="page6R_mcid101" class="markedContent"><span dir="ltr" role="presentation">based on the method desc</span></span><span id="page6R_mcid102" class="markedContent"><span dir="ltr" role="presentation">ribed in ASTM C186</span></span><span id="page6R_mcid103" class="markedContent"><span dir="ltr" role="presentation">-</span></span><span id="page6R_mcid104" class="markedContent"><span dir="ltr" role="presentation">98</span></span><span id="page6R_mcid105" class="markedContent"><span dir="ltr" role="presentation">.</span></span><span id="page6R_mcid106" class="markedContent"> <span dir="ltr" role="presentation">The results showed that the hydration kinetics of OPC in the </span></span><span id="page6R_mcid107" class="markedContent"><span dir="ltr" role="presentation">FRCC was improved by using HAA</span></span><span id="page6R_mcid108" class="markedContent"><span dir="ltr" role="presentation">.</span></span><span id="page6R_mcid109" class="markedContent"> <span dir="ltr" role="presentation">In addition,</span></span><span id="page6R_mcid110" class="markedContent"> <span dir="ltr" role="presentation">when the amount of HAA was at 3</span></span><span id="page6R_mcid111" class="markedContent"><span dir="ltr" role="presentation">%</span></span><span id="page6R_mcid112" class="markedContent"> <span dir="ltr" role="presentation">of the OPC weight, the </span></span><span id="page6R_mcid113" class="markedContent"><span dir="ltr" role="presentation">hydration reaction rate</span></span><span id="page6R_mcid114" class="markedContent"></span><span id="page6R_mcid115" class="markedContent"> <span dir="ltr" role="presentation">was improved by 41</span></span><span id="page6R_mcid116" class="markedContent"><span dir="ltr" role="presentation">%.</span></span><span id="page6R_mcid117" class="markedContent"> <span dir="ltr" role="presentation">The HAA additive acted as</span></span><span id="page6R_mcid118" class="markedContent"> <span dir="ltr" role="presentation">an accelerating agent by shortening the </span></span><span id="page6R_mcid119" class="markedContent"><span dir="ltr" role="presentation">setting time and enhancing the temperature of the hydration reaction</span></span><span id="page6R_mcid120" class="markedContent"><span dir="ltr" role="presentation">.</span></span><span id="page6R_mcid121" class="markedContent"> <span dir="ltr" role="presentation">This suggests that the cement paste can set </span></span><span id="page6R_mcid122" class="markedContent"><span dir="ltr" role="presentation">faster, reducing the cycle time in FRCC processing</span></span><span id="page6R_mcid123" class="markedContent"><span dir="ltr" role="presentation">.</span></span><span id="page6R_mcid124" class="markedContent"> <span dir="ltr" role="presentation">Even though further addition of the HAA increased</span></span><span id="page6R_mcid125" class="markedContent"> <span dir="ltr" role="presentation">the </span></span><span id="page6R_mcid126" class="markedContent"><span dir="ltr" role="presentation">reaction rate, the setting time of OPC was too short to form a green sheet for the actual production of FRCC on </span></span><span id="page6R_mcid127" class="markedContent"><span dir="ltr" role="presentation">an industrial scale</span></span><span id="page6R_mcid128" class="markedContent"><span dir="ltr" role="presentation">.</span></span><span id="page6R_mcid129" class="markedContent"> <span dir="ltr" role="presentation">In addition, the heat released during the test, representing by the temperature change of the </span></span><span id="page6R_mcid130" class="markedContent"><span dir="ltr" role="presentation">sample, was too high whic</span></span><span id="page6R_mcid131" class="markedContent"><span dir="ltr" role="presentation">h could have a negative impact on the finished FRCC products</span></span><span id="page6R_mcid132" class="markedContent"><span dir="ltr" role="presentation">.</span></span></p>}, number={1}, journal={Suan Sunandha Science and Technology Journal}, author={Nithipaiboon, Juthamat and Prakaypan, Wichit and Chakartnarodom, Parinya and A Laitila, Edward and Kongkajun, Nuntaporn}, year={2023}, month={Jan.}, pages={126–131} }