Cement Matrix Modified by Mesoporous Silica of the MCM-41 Structure Type: Early-Age Properties and Microstructure Evolution

被引：5

作者：

Szelag, Maciej ^{[1
]}

Panek, Rafal ^{[1
]}

Madej, Jaroslaw ^{[1
]}

Fediuk, Roman ^{[2
]}

机构：

[1] Lublin Univ Technol, Fac Civil Engn & Architecture, 40 Nadbystrzycka St, PL-20618 Lublin, Poland

[2] Far Eastern Fed Univ, Polytech Inst, Vladivostok 690922, Russia

来源：

JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 2022年 / 34卷 / 09期

关键词：

Mobil composition of matter No; 41 (MCM-41); Mesoporous silica; Cement matrix; Early-age properties; Hydration; Microstructure; PORTLAND-CEMENT; FLY-ASH; MECHANICAL-PROPERTIES; COMPRESSIVE STRENGTH; CALCIUM FORMATE; BLENDED CEMENT; NANO-SILICA; CONCRETE; HYDRATION; PERFORMANCE;

D O I：

10.1061/(ASCE)MT.1943-5533.0004348

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper describes the results of a study on the influence of mesoporous silica of the Mobil composition of matter No. 41 (MCM-41) structure type on the early-age properties of the cement matrix (CM) and the microstructure development. To date, no studies related to the use of MCM-41 to modify the CM structure have been reported in the literature. The MCM-41 used in this study was produced from a waste material created during the conversion process of fly ash into synthetic zeolites. A number of physicomechanical, and compositional properties were tested. MCM-41 was applied in amounts of 0.25%-2% by weight of cement in a manner that allowed its uniform dispersion, and tests were performed as a function of maturation time, i.e., after 1, 3, 7, 14, and 28 days. The MCM-41 was found to accelerate the cement hydration process and its use promotes the formation of a more compact, gel-like CSH phase with greater cohesion.

引用

页数：18

共 73 条

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