X-ray diffraction of concrete composites of high structural strength and density

被引：0
|
作者：
Fodchuk, I. M. [1 ]
Sumariuk, O., V [1 ]
Romankevich, V. F. [1 ]
机构：
[1] Yu Fedkovych Chernivtsi Natl Univ, 2 Kotsyubinskiy Str, UA-58012 Chernovtsy, Ukraine
来源：
PHYSICS AND CHEMISTRY OF SOLID STATE | 2021年 / 22卷 / 04期
关键词：
High resolution X-ray diffractometry; ultrafine modifiers; microsilica; metakaolin;
D O I：
10.15330/pcss.22.4.746-749
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The processes of microstructure development and hydration of concrete composites of high structural strength and density, which were modified by a complex of modifiers based on microsilica and metakaolin, have been studied. It was found that the addition of 10% microsilica in combination with 5% metakaolin and 5% polycarboxylate ether by weight of cement, create conditions for the conversion of unstable and soluble calcium hydroxide into a strong crystalline hydrate of calcium silicate. It has been shown that the presence of compounds that include Al and Fe in the late stages of hydration is a sign of the formation of secondary phases of hydroaluminates and calcium hydroferrites. The 36% increase in strength is due to the optimal use of free calcium hydroxide and amorphous silicon dioxide.
引用
收藏
页码：746 / 749
页数：4
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