Jang Hong-Seok, Jeon Ui-Hyeon, So Seung-Young
J Nanosci Nanotechnol. 2015 Nov;15(11):9110-5. doi: 10.1166/jnn.2015.11577.
White Portland Cement (WPC) and inorganic pigment have been used in colored concrete, but there are some physical problems such as increases in efflorescence, and poor workability and low economics. The aim of this study was to investigate the effects of GBFS and polymer (methyl cellulose) on the physical properties of carbon black mortar. For this purpose, a flow test, compressive strength test and color evaluation and was carried out on cement mortar mixed with polymer by changing the proportion of cement and ratio of GBFS. The results show that the addition of polymer influences significantly the color value efficiency in colored mortar. This is due to the reduction of overall amount of micro pore. This polymer films prevent the transport of soluble calcium towards the surface, and decreases efflorescence. And the flow of colored mortar was increased in proportion to the addition rate of the GBFS. In addition the strength of colored mortars with GBFS at the long-term aged (after 28 days) was higher than that of the general WPC mortar, although its strength was developed slowly at the early ages.
白色波特兰水泥（WPC）和无机颜料已用于彩色混凝土中，但存在一些物理问题，如泛霜增加、工作性差和经济性低。本研究的目的是研究粒化高炉矿渣（GBFS）和聚合物（甲基纤维素）对炭黑砂浆物理性能的影响。为此，通过改变水泥比例和GBFS掺量，对掺聚合物的水泥砂浆进行了流动度试验、抗压强度试验和颜色评价。结果表明，聚合物的加入对彩色砂浆的色值效率有显著影响。这是由于微孔总量的减少。这种聚合物薄膜阻止了可溶性钙向表面的迁移，减少了泛霜。彩色砂浆的流动度随GBFS掺量的增加而增大。此外，掺GBFS的彩色砂浆在长期老化（28天后）的强度高于普通WPC砂浆，尽管其早期强度发展缓慢。
