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| 1 | 超高强混凝土中各组分与聚羧酸系超塑化剂之间的相互作用(英文)显示文摘超高强混凝土(ultra-high strength concrete,UHSC)的水灰比小于0.25,含有大量的硅灰等微细组分,这有利于颗粒的最优紧密堆积。硅灰的表面化学效应以及较大的表面积使其成为UHSC中最难被分散的组分。由甲基丙烯酸、甲基丙烯酸酯及甲代烯丙基磺酸合成的聚羧酸系超塑化剂能使水泥颗粒被有效润湿,然而烯丙醚-马来酸酐合成的聚羧酸系超塑化剂可以很好地分散硅灰。这2种不同的聚羧酸系超塑化剂的复合可以使其拥有不同的分子结构,从而赋予超高强混凝土很好的流动性。当只加入1种聚羧酸系超塑化剂时其掺量为1%(质量分数,下同),而当加入这种复合聚羧酸系超塑化剂时掺量为0.5%就足够了。这2种类型的聚羧酸系超塑化剂的协同效应是由于它们的选择性吸附:甲基丙烯酸盐基的聚羧酸系超塑化剂主要吸附在水泥颗粒表面,而烯丙醚基聚羧酸系超塑化剂主要吸附在硅灰颗粒表面。实验表明:小分子量的有机酸阴离子(如:柠檬酸盐、葡萄糖酸盐及酒石酸盐中的阴离子)与聚羧酸系超塑化剂之间具有潜在的协同作用。只需加入0.1%的这些阴离子即可显著提高烯丙醚基聚羧酸系超塑化剂的作用效果。这些阴离子可以起到一种辅助作用,它们同时吸附在水泥颗粒表面以及硅灰颗粒表面。水泥颗粒的表面首先由这些阴离子所占据,而硅灰颗粒表面吸附了烯丙醚基聚羧酸系超塑化剂和这些阴离子。这些阴离子起到了一种很强的静电分散效应,使烯丙醚基聚羧酸系超塑化剂的空间位阻效应得到加强。虽然聚羧酸系超塑化剂阴离子具有缓凝作用,但是使用这种复合聚羧酸系仍能制备出高早强混凝土。 | SCHROFL C GRUBER M PLANK J | 2010 | 硅酸盐学报2010，38，9： | 3 |
| 2 | The Treatment of Intertrochanteric Fractures: Results Using an Intramedullary Nail With Integrated Cephalocervical Screws and Linear Compression显示文摘 | Andreas H Ruecker M Rupprecht M Gruber M Gebauer F Barvencik D Briem J M Rueger | 2009 | Journal of Orthopaedic Trauma2009，，1： | 2 |
| 3 | Modeling the crystal-field splitting of energy levels of Era* (4f11 ) in charge-compensated sites of KPbzC15 显示文摘 | GRUBER J B YOW R M NIJJAR A S NIJJAR C RUSSELL C SARDAR D J | 2006 | J Appl Phys2006，100，04： | 1 |
| 4 | Anti-apoptotic effects of IGF-1 and PDGF on human intervertebral disc cells in vitro 显示文摘 | Gruber H E Norton H J Hanley E N | 2000 | Spine2000，25，17： | 1 |
| 5 | Another Puzzle: The Growth in Actively Managed Mutual Funds 显示文摘 | GRUBER M J | 1996 | Journal of Finance1996，51，3： | 1 |
| 6 | Statins and the risk of colorectal cancer显示文摘 | Poynter J N Gruber S B Higgins P D R | 2005 | N Engl J Med2005，352，21： | 1 |
| 7 | Does public insurance crowd out private insurance 显示文摘 | Cutler D M Gruber J | 1996 | Quarterly Journal of Economics1996，11，2： | 1 |
| 8 | Mathematical modeling of the role of mitochondrial fusion and fission in mitochondrial DNA maintenance显示文摘 | Tam ZY Gruber J Halliwell B | 2013 | PLo S One2013，8，10： | 1 |
| 9 | A discreet emotions approach to positive emotion disturbance in depression显示文摘 | Gruber J Oveis C Kehner D | 2011 | Cogn Emot2011，25，1： | 1 |
| 10 | Strontium isotope composition as a tracer of calcium sources in two forest ecosystems in Belgium显示文摘 | Drouet T Herbauts J Gruber W | 2005 | Geoderma2005，126，： | 1 |
| 11 | What you are is what you like--similarity biases in venture capitalists' evaluations of start - up teams 显示文摘 | Franke N Gruber M Harhoff D Henkel J | 2006 | Journal of Business Venturing2006，，21： | 1 |
| 12 | A novel plant pro- tein disulfide isomerase involved in the oxidactive folding of cystine knot defense proteins 显示文摘 | Gruber C W Cemazar M Clark R J | 2007 | Journal of Biological Chem- istry2007，22，： | 1 |
| 13 | Marginal Stockholder Tax Hates and the Clientele Effect 显示文摘 | Elton E J Gruber M 1 | 1970 | The Review of Economics and Statistics1970，52，1： | 1 |
| 14 | Nonlinear MPC based on a Volterra series model for green house temperature con- trol using natural ventilation 显示文摘 | GRUBER J K GUZMAN J L RODRGUEZ F | 2011 | Control Engineering Practice2011，19，4： | 1 |
| 15 | Hydrogensulfide is an endogenous regulator of aging inCaenorhabditis elegans显示文摘 | QABAZARD B LI L GRUBER J | 2014 | Antioxidants & RedoxSignaling2014，20，16： | 1 |
| 16 | Real-world emotion? An experience-sampling approach to emotion experience and regulation in bipolar I disorder显示文摘 | Gruber J Kogan A Mennin D | 2013 | J Abnorm Psychol2013，122，4： | 1 |
| 17 | Subchondral bone resorption in temporomandibular joint disorders 显示文摘 | Gruber HE Gregg J | 2003 | Cells Tissues Organs2003，174，12： | 1 |
| 18 | Mesenchymal stem cell implantation in a swine myocardial infarct model: engraftment and functional effects 显示文摘 | Shake J G Gruber P J Baumgartner W A | 2002 | Ann Thorac Surg2002，73，6： | 1 |
| 19 | Mixing and combustion studies using cavity based flame holders in su personic flow显示文摘 | Gruber M R Donbar J M Carter C D | 2004 | Journal of Propulsion and Power2004，20，5： | 1 |
| 20 | A Present Value Test of Habits and the Current Account 显示文摘 | Gruber J W | 2004 | Journal of Monetary Economics2004，51，7： | 1 |
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