Determination of alkali-silica reaction effects of zeolitic tuff addition on the different aggregates

Küçük Resim Yok

Tarih

2010

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The aim of this study is to determine the alkali-silica reaction (ASR) related characteristics of crushed stones that are produced from rocks of perlite, andesite and limestone when zeolitic tuff (ZT) is used in the mortar mix as cement replacement in different ratios. Accelerated mortar bar experiments in accordance with ASTM C 1260 were carried out on crushed stone aggregate samples to determine the ASR. CEM I 42.5 R type cement was replaced by ZT material in the following ratios: 0, 10, 20, 30 and 40%; in order to investigate the effects of replacement on the ASR pertaining to the aggregate types, 45 mortar bar pieces were produced. The length change values of the samples were measured on the 3, 7, 14, 28, 42, 56 days according to the accelerated mortar bar method. Measured length changes for the control samples on 14th day were found to be 0.570% at the level of potentially harmful for perlite, 0.101% at the level of critic for andesite and 0.061% at the level of harmless for limestone. Length changes at the harmful levels were taken under control for perlite at 30 and 40%, for andesite at 20, 30 and 40% ZT replacement ratios. Length change values of all samples decrease as ZT replacement increases. As a result, ZT replacement is effective to suppress the ASR of reactive aggregates.

Açıklama

Anahtar Kelimeler

Alkali silica reaction, Andesite, Limestone, Perlite, Zeolitic tuff, Aggregate type, Alkali-silica reaction, Andesite, Cement replacement, Control samples, Crushed stones, Mortar-bar method, Perlite, Reactive aggregate, Replacement ratio, Zeolitic tuff, Aggregates, Cements, Limestone, Mortar, Silica, Igneous rocks, Alkali silica reaction, Andesite, Limestone, Perlite, Zeolitic tuff, Aggregate type, Alkali-silica reaction, Andesite, Cement replacement, Control samples, Crushed stones, Mortar-bar method, Perlite, Reactive aggregate, Replacement ratio, Zeolitic tuff, Aggregates, Cements, Limestone, Mortar, Silica, Igneous rocks

Kaynak

Journal of the Faculty of Engineering and Architecture of Gazi University

WoS Q Değeri

Scopus Q Değeri

Q3

Cilt

25

Sayı

4

Künye