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

页码：746 / 749

页数：4