混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
12期
9-12
,共4页
漆春生%洪斌%齐应明%孙二建%李超
漆春生%洪斌%齊應明%孫二建%李超
칠춘생%홍빈%제응명%손이건%리초
自密实混凝土%专用外加剂%高减水率%低引气量
自密實混凝土%專用外加劑%高減水率%低引氣量
자밀실혼응토%전용외가제%고감수솔%저인기량
Self-compacting concrete%Special admixture%High water reducing rate%Low air entraining content
通过选用适宜的酯类聚羧酸减水剂母液，采用葡萄糖酸钠、纳米SiO2、有机硅进行复配，研制出一种高减水率、低引气量、保塑性好、适于低强度等级自密实混凝土的专用外加剂，实现了低胶凝材料用量下混凝土的高流动性与低含气量的匹配设计。配制C30自密实混凝土时，其最佳掺量为1.2%~1.6%。所配制的混凝土具有良好的工作性能，不离析、不泌水，满足自密实混凝土泵送施工工艺要求，并成功应用于武汉阳逻港深水薄壁大直径钢管桩中。
通過選用適宜的酯類聚羧痠減水劑母液，採用葡萄糖痠鈉、納米SiO2、有機硅進行複配，研製齣一種高減水率、低引氣量、保塑性好、適于低彊度等級自密實混凝土的專用外加劑，實現瞭低膠凝材料用量下混凝土的高流動性與低含氣量的匹配設計。配製C30自密實混凝土時，其最佳摻量為1.2%~1.6%。所配製的混凝土具有良好的工作性能，不離析、不泌水，滿足自密實混凝土泵送施工工藝要求，併成功應用于武漢暘邏港深水薄壁大直徑鋼管樁中。
통과선용괄의적지류취최산감수제모액，채용포도당산납、납미SiO2、유궤규진행복배，연제출일충고감수솔、저인기량、보소성호、괄우저강도등급자밀실혼응토적전용외가제，실현료저효응재료용량하혼응토적고류동성여저함기량적필배설계。배제C30자밀실혼응토시，기최가참량위1.2%~1.6%。소배제적혼응토구유량호적공작성능，불리석、불비수，만족자밀실혼응토빙송시공공예요구，병성공응용우무한양라항심수박벽대직경강관장중。
In order to design high fluidity and low air content concrete, proper ether-type polycarboxylate water re-ducer mother liquor, sodium gluconate, nano silicium dioxide and organosilicone are used to prepare a type of admixture with high water reduction rate, low air entraining content and good slump-retaining property, which is suitable for lower strength grade self-compacting concrete. In the preparation of C30 self-compacting concrete, the best dosage of this ad-mixture is 1.2%~1.6%. The concrete containing this type of admixture has well work ability, no segregation and no bleed-ing, which can meet the need of pumping construction technology of self-compacting concrete and is successfully applied in deepwater port with thin wall and large diameter steel pipe pile in Yangluo of Wuhan.
