Resistance of selected aggregates from igneous rocks to alkali-silica reaction: verification

IF 0.5 Q4 CONSTRUCTION & BUILDING TECHNOLOGY

Roads and Bridges-Drogi i Mosty Pub Date : 2019-03-31 DOI:10.7409/RABDIM.019.005

D. Jóźwiak-Niedźwiedzka, A. Antolik, K. Dziedzic, M. Glinicki, Karolina Gibas

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引用次数: 8

Abstract

The paper presents investigations into the reactivity of aggregates from igneous rock, carried out in accordance with the procedures contained in the GDDKiA General Technical Specification "Concrete pavements". The aim of the investigations was evaluation of the suitability of the aggregates for road structures and pavements built using cement based concrete technology. Aggregates produced from extrusive rocks (basalt, melaphyre and porphyry) and from intrusive rocks (granite and gabbro) were analysed. The mineral composition of the aggregates was evaluated with regard to their reactive SiO 2 content. Expansion tests on mortar bar and concrete prism specimens with analysed aggregates and a microscopic analysis of the alkali-aggregate reaction products were carried out. A considerable amount of reactive minerals: chalcedony, tridymite and microcrystalline quartz and volcanic glass were found in the grains of the porphyry and melaphyre aggregates. On the basis of the conducted investigations the two aggregates made of igneous rocks (melaphyre and porphyry) were classified into category R1 (moderately reactive). The basalt aggregate, the granite aggregate and the gabbro aggregate were assigned to category R0 (non-reactive).

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火成岩中精选聚集体对碱-硅反应的抗性:验证

本文根据GDDKiA通用技术规范“混凝土路面”中包含的程序，对火成岩集料的反应性进行了调查。调查的目的是评估使用水泥基混凝土技术建造的道路结构和路面的骨料的适用性。分析了挤压岩(玄武岩、斑岩、闪质岩)和侵入岩(花岗岩、辉长岩)的聚集体。根据其活性sio2含量对聚集体的矿物组成进行了评价。用分析过的骨料对砂浆条和混凝土棱柱试件进行了膨胀试验，并对碱骨料反应产物进行了微观分析。在斑岩和暗斑岩集合体的颗粒中发现了相当数量的活性矿物:玉髓、钇铝石、微晶石英和火山玻璃。根据已进行的调查，将两种由火成岩组成的团聚体(斑岩和暗斑岩)划分为R1类(中度反应)。玄武岩骨料、花岗岩骨料和辉长岩骨料属于R0类(无活性)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Roads and Bridges-Drogi i Mosty CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： The quarterly journal Roads and Bridges – Drogi i Mosty is published by the Road and Bridge Research Institute since September 2012 as a bilingual English-Polish journal. From 2002 to 2012 the journal was printed under the title Drogi i Mosty. The journal mission is to promote current achievements in science and technology in the field of road and bridge engineering. The journal is intended as a forum of the exchange of innovative concepts and solutions between the researches from different countries. Original scientific and technical papers in the field of civil engineering and related engineering sciences are published. The scope of Roads and Bridges – Drogi i Mosty includes design, construction, maintenance and safe use of roads, bridges, airports and other transportation structures.