Investigation of the Mechanical Properties and Durability of Fiber-Reinforced Geopolymer Mortars Containing Metakaolin and Glass Powder

被引：0

作者：

Mirgozar Langaroudi, Mir Alimohammad ^{[1
]}

Mohtasham Moein, Mohammad ^{[2
]}

Saradar, Ashkan ^{[3
]}

Karakouzian, Moses ^{[4
]}

机构：

[1] Islamic Azad Univ, Dept Civil Engn, Fouman & Shaft Branch, Fouman 4351835875, Iran

[2] Allameh Mohaddes Nouri Univ, Dept Civil Engn, Nour 4641859558, Iran

[3] Univ Guilan, Dept Civil Engn, Rasht 4199613776, Iran

[4] Univ Nevada, Dept Civil & Environm Engn & Construct, Las Vegas, NV 89154 USA

来源：

INFRASTRUCTURES | 2025年 / 10卷 / 02期

关键词：

geopolymer mortar; metakaolin; glass powder; polypropylene fibers; fuzzy logic; BLAST-FURNACE SLAG; CALCIUM ALUMINATE CEMENT; FLY-ASH; COMPRESSIVE STRENGTH; CONCRETE; WORKABILITY; PERFORMANCE; ADDITIVES; SILICA; PASTE;

D O I：

10.3390/infrastructures10020025

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The increasing global emphasis on sustainable construction practices has spurred significant international research into developing durable and eco-friendly concrete materials. This study investigates the potential of metakaolin and glass powder as supplementary aluminosilicate materials in slag- based geopolymer mortars, aiming to enhance their mechanical properties and durability. To further improve the performance, polypropylene fibers were incorporated at various dosages. Therefore, 13 mixtures of geopolymer mortar based on blast furnace slag have been developed. The control mix does not contain fibers or slag replacement materials, whereas in the other formulations, glass powder and metakaolin have been employed as substitutes for slag at weight percentages (relative to the weight of slag) of 5% and 10%, separately and in combination. Additionally, the fiber-containing samples are divided into two groups based on the volume percentage of polypropylene fibers, comprising 0.2% and 0.4%. The results of the investigation show that the use of glass powder, particularly at a replacement percentage of 10%, leads to an improvement in the 28-day compressive strength. Furthermore, the mixes containing glass powder demonstrated higher flexural strength compared to those containing metakaolin, irrespective of the volume percentage of fibers. The best performance in the rapid chloride permeability test is associated with the mix containing a combination of glass powder and metakaolin at a replacement percentage of 10%. Satisfactory results have been obtained when using fibers at volume percentages of 0.2% and 0.4%. Additionally, this study utilized a fuzzy inference system to predict compressive strength. The results indicate that, by considering uncertainties, the compressive strength of the mortar can be predicted with an error of less than 1% without the need for complex mathematical calculations.

引用

页数：31

共 112 条

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[2] Mohtasham Moein M., Rahmati K., Saradar A., Moon J., Karakouzian M., A Critical Review Examining the Characteristics of Modified Concretes with Different Nanomaterials, Materials, 17, (2024)
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