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href="news.asp?type_id=1">EPS</a></div> </div> </ul> </div> <div class="title5 text-center"> 钢纤维直径及组合对UHPC性能的影响 </div> <div class="text1"> <p> <section style="margin:0px;padding:0px;max-width:100%;color:#333333;font-family:-apple-system-font, BlinkMacSystemFont, "font-size:17px;letter-spacing:0.544px;text-align:justify;white-space:normal;background-color:#FFFFFF;text-indent:2em;box-sizing:border-box !important;overflow-wrap:break-word !important;">今天来了解下钢纤维直径与混合比对UHPC性能的影响。</section><section style="margin:0px;padding:0px;max-width:100%;color:#333333;font-family:-apple-system-font, BlinkMacSystemFont, "font-size:17px;letter-spacing:0.544px;text-align:justify;white-space:normal;background-color:#FFFFFF;text-indent:2em;box-sizing:border-box !important;overflow-wrap:break-word !important;"><br style="margin:0px;padding:0px;max-width:100%;box-sizing:border-box !important;overflow-wrap:break-word !important;" /> </section><section style="margin:0px;padding:0px;max-width:100%;color:#333333;font-family:-apple-system-font, BlinkMacSystemFont, "font-size:17px;letter-spacing:0.544px;text-align:justify;white-space:normal;background-color:#FFFFFF;text-indent:2em;box-sizing:border-box !important;overflow-wrap:break-word !important;">①UHPC流动度与钢纤维直径及掺量呈负相关性。单掺时，直径0.18mm及0.30mm钢纤维掺量从1.0%增加到2.5%，流动度降幅分别为6.7%、13.9%；复掺时，随着直径0.30mm钢纤维占比提高，流动度先增大后减小，在25.0%掺量时增幅最大，为2.5%;之后流动度开始下降，最大降幅为6.1%.</section><section style="margin:0px;padding:0px;max-width:100%;color:#333333;font-family:-apple-system-font, BlinkMacSystemFont, "font-size:17px;letter-spacing:0.544px;text-align:justify;white-space:normal;background-color:#FFFFFF;text-indent:2em;box-sizing:border-box !important;overflow-wrap:break-word !important;">②随着钢纤维掺量的增加，UHPC抗压、抗折、抗拉强度都逐渐增大，其最大分别为173.5MPa、37.8MPa、12.8MPa，抗压强度标准差逐渐减小，最低为7.4MPa。</section><section style="margin:0px;padding:0px;max-width:100%;color:#333333;font-family:-apple-system-font, BlinkMacSystemFont, "font-size:17px;letter-spacing:0.544px;text-align:justify;white-space:normal;background-color:#FFFFFF;text-indent:2em;box-sizing:border-box !important;overflow-wrap:break-word !important;">③随着钢纤维直径的增大，UHPC抗折强度逐渐提高，最高为37.8MPa;抗拉强度逐渐降低，最低为7.1lMPa;抗压强度在掺量从1.0%提升至2.0%的过程中呈降低趋势，超过2.0%后，呈升高趋势，最大值为173.5MPa。</section><section style="margin:0px;padding:0px;max-width:100%;color:#333333;font-family:-apple-system-font, BlinkMacSystemFont, "font-size:17px;letter-spacing:0.544px;text-align:justify;white-space:normal;background-color:#FFFFFF;text-indent:2em;box-sizing:border-box !important;overflow-wrap:break-word !important;">④综合UHPC流动度、力学性能及经济性，建议UHPC中钢纤维直径为0.22mm，掺量为1.5%~2.0%。</section> </p> <p> <img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172658965896.Jpeg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172680758075.Jpeg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172622152215.jpg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172616221622.jpg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172653905390.jpg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172699089908.jpg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172629652965.jpg" alt="" /><img src="/qiju123/editor/asp/../../uploadpic/image/20200922/20200922172679807980.jpg" alt="" /> </p> </div> <div style="text-align:center; width:80px; height:40px; line-height:40px; background:#4f5b4d; display:block; margin:0 auto; margin-top:30px;"><a style="color:#fff; font-size:14px;" href="javascript:window.history.back();">返回上级</a></div> </div> </div> </div> </div> </div> <footer class="main"> <div class="container-fluid"> <div class="row"> <div class="col-xs-12 clearfix"> <div class="ewm pull-left text-center"> <img src="images/web.png" class="img-responsive" width="130" height="130"> <h5>微信账号</h5> </div> 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