ANALYSIS OF THE EFFECT OF VARIOUS TYPES OF LIMESTONE AS A MAIN CONSTITUENT OF CEMENT ON THE CHOSEN PROPERTIES OF CEMENT PASTES AND MORTARS

被引：9

作者：

Golaszewski, J. ^{[1
]}

Cygan, G. ^{[1
]}

Golaszewska, M. ^{[1
]}

机构：

[1] Silesian Tech Univ, Fac Civil Engn, Ul Akad 5, PL-44100 Gliwice, Poland

来源：

ARCHIVES OF CIVIL ENGINEERING | 2019年 / 65卷 / 03期

关键词：

Limestone; cement mortar; rheology; shrinkage; mechanical properties; SELF-COMPACTING CONCRETE;

D O I：

10.2478/ace-2019-0035

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The article is an attempt to compare the impact of the use of various types of limestone as the main constituent of cement on selected mortar properties. Four different limestones were added in amount of 15, 30, 40% to CEM I 42.5 R to obtain limestone cemens. Rheological properties (yield stress, plastic viscosity) of fresh mortar, tensile and compressive mortar strength, early shrinkage, and drying shrinkage were tested. Obtained results indicate that both tensile and compressive strength decreases with the increase of the limestone content in cement. Limestone can worsen or improve workability, depending on distribution of limestone grains. The addition of limestone increases the early shrinkage, but reduces the shrinkage after 28 days. Studies show that the granulation of limestone plays an important role in determining the influence of limestone on mortar properties.

引用

页码：75 / 86

页数：12

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