混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
8期
6-9
,共4页
洪斌%漆春生%李超%丁庆军
洪斌%漆春生%李超%丁慶軍
홍빈%칠춘생%리초%정경군
自密实%微膨胀%钢管桩基混凝土%含气量
自密實%微膨脹%鋼管樁基混凝土%含氣量
자밀실%미팽창%강관장기혼응토%함기량
Self-compacting%Slight expansion%Steel pile foundation of concrete%Air content
针对C30水下钢管桩混凝土胶材使用量少，水胶比较大，自密实性能差的缺点，本文利用研制出的具有较好增粘、减水、保塑功能的专用外加剂，进行了C30自密实微膨胀水下钢管桩基混凝土优化配合比设计和性能研究。结果表明，制备出的混凝土初始坍落度230mm，2h坍落度215mm，含气量1.8%，28d抗压强度42.6MPa，28d密闭环境下自由膨胀率1.25×10-4，满足工程设计要求，并将其成功应用于武汉阳逻港深水薄壁大直径钢管桩中。
針對C30水下鋼管樁混凝土膠材使用量少，水膠比較大，自密實性能差的缺點，本文利用研製齣的具有較好增粘、減水、保塑功能的專用外加劑，進行瞭C30自密實微膨脹水下鋼管樁基混凝土優化配閤比設計和性能研究。結果錶明，製備齣的混凝土初始坍落度230mm，2h坍落度215mm，含氣量1.8%，28d抗壓彊度42.6MPa，28d密閉環境下自由膨脹率1.25×10-4，滿足工程設計要求，併將其成功應用于武漢暘邏港深水薄壁大直徑鋼管樁中。
침대C30수하강관장혼응토효재사용량소，수효비교대，자밀실성능차적결점，본문이용연제출적구유교호증점、감수、보소공능적전용외가제，진행료C30자밀실미팽창수하강관장기혼응토우화배합비설계화성능연구。결과표명，제비출적혼응토초시담락도230mm，2h담락도215mm，함기량1.8%，28d항압강도42.6MPa，28d밀폐배경하자유팽창솔1.25×10-4，만족공정설계요구，병장기성공응용우무한양라항심수박벽대직경강관장중。
According to the under of water steel pile concrete of C30 with less cement consumption and the water ratio is large, and its self-compacting properties poor, the special admixture with good viscosity and water reducing effect is prepared, and C30 of self-compacting concrete under of water steel pile is researched with the performances of 230mm of initial slump, 215mm of 2h slump, 1.8%of air content, 42.6 MPa of 28d compressive strength and 1.25×10-4 of 28d closed environment free expansion rate, which can meet the requirement of engineering design, and it is successfully applied in deepwater port with thin wall and large diameter steel pile in Yangluo of Wuhan.
