混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
10期
25-29
,共5页
超硫酸盐水泥混凝土%微珠%硅灰%掺量%非接触收缩
超硫痠鹽水泥混凝土%微珠%硅灰%摻量%非接觸收縮
초류산염수니혼응토%미주%규회%참량%비접촉수축
Super sulphated cement concrete%Micro-bead%Silica fume%Content%Non-contact shrinkage
采用超硫酸盐水泥（简称SSC）、微珠和硅灰制备C60~C80混凝土。通过改变微珠和硅灰的掺量,考察其对SSC混凝土相关性能的影响,进行了SSC混凝土力学性能、非接触收缩和微观机理方面的研究,借助扫描电子显微镜和X射线衍射分析仪研究了SSC试件矿物组成。研究表明,C60~C80 SSC混凝土胶凝材料体系中,微珠的适宜掺量为10%~20%,硅灰的适宜掺量为5%~10%。适宜掺量下的微珠和硅灰对SSC混凝土工作性能和力学性能有很好的改善作用,微珠和硅灰使得体系级配更好,可提高SSC混凝土强度达10%以上。硅灰和微珠增加了试件的收缩程度,且粒径越小,收缩率越大。SSC水化产物主要由钙矾石、二水石膏、SiO2、C- S- H凝胶和少量Ca(OH)2（5%以内）组成。
採用超硫痠鹽水泥（簡稱SSC）、微珠和硅灰製備C60~C80混凝土。通過改變微珠和硅灰的摻量,攷察其對SSC混凝土相關性能的影響,進行瞭SSC混凝土力學性能、非接觸收縮和微觀機理方麵的研究,藉助掃描電子顯微鏡和X射線衍射分析儀研究瞭SSC試件礦物組成。研究錶明,C60~C80 SSC混凝土膠凝材料體繫中,微珠的適宜摻量為10%~20%,硅灰的適宜摻量為5%~10%。適宜摻量下的微珠和硅灰對SSC混凝土工作性能和力學性能有很好的改善作用,微珠和硅灰使得體繫級配更好,可提高SSC混凝土彊度達10%以上。硅灰和微珠增加瞭試件的收縮程度,且粒徑越小,收縮率越大。SSC水化產物主要由鈣礬石、二水石膏、SiO2、C- S- H凝膠和少量Ca(OH)2（5%以內）組成。
채용초류산염수니（간칭SSC）、미주화규회제비C60~C80혼응토。통과개변미주화규회적참량,고찰기대SSC혼응토상관성능적영향,진행료SSC혼응토역학성능、비접촉수축화미관궤리방면적연구,차조소묘전자현미경화X사선연사분석의연구료SSC시건광물조성。연구표명,C60~C80 SSC혼응토효응재료체계중,미주적괄의참량위10%~20%,규회적괄의참량위5%~10%。괄의참량하적미주화규회대SSC혼응토공작성능화역학성능유흔호적개선작용,미주화규회사득체계급배경호,가제고SSC혼응토강도체10%이상。규회화미주증가료시건적수축정도,차립경월소,수축솔월대。SSC수화산물주요유개반석、이수석고、SiO2、C- S- H응효화소량Ca(OH)2（5%이내）조성。
The super sulfate cement (SSC), micro-bead and silica fume are employed to prepare C60~C80 concrete. By changing the content of micro-bead and silica fume to investigate the effect of SSC concrete related properties, and then the mechanical strength, non-contact shrinkage and microscopic mechanism are carried out. The mineral composition of SSC samples are analyzed by scanning electron microscope and X-ray diffractometer. Experimental results show that the appropriate content of micro-bead and silica fume are respective 10%~20% and 5%~10% in cementitious materials of C60~C80 SSC concrete. The micro-bead, silica fume have prominent interstitial effect and system with excellent gradation to improve the working and mechanical performances of SSC concrete, and can increase the SSC concrete strength more than 10%. The micro-bead and silica fume have increased the contraction degree of samples, the smaller particle size, the greater shrinkage rate. Samples hydration products are mainly composed of ettringite, dihydrate gypsum, SiO2, C-S-H gel and a small amount of Ca (OH)2 (5%).
