Assessment of long-term reactivity of initially lowly-reactive solid wastes as supplementary cementitious materials (SCMs)
作者： Dongxing Xuan , Chi Sun Poon , Hafiz Asad Ali
DOI: 10.1016/J.CONBUILDMAT.2019.117192
关键词: Bottom ash 、 Pulp and paper industry 、 Incineration 、 Reactivity (chemistry) 、 Materials science 、 Portlandite 、 Cementitious 、 Fly ash 、 Mortar 、 Lime 、 General Materials Science 、 Civil and Structural Engineering 、 Building and Construction
摘要: Abstract Recently, due to various reasons, the amount of commercial supplementary cementitious materials (SCMs) available for concrete industry has depleted and hence a wide range moderately lowly active solid wastes are being considered as SCMs. However, using such SCMs needs an efficient practical procedure estimate their long-term reactivity. For this purpose, different mechanical chemical testing schemes have been specified (e.g. Chapelle test, relative strengths, activity index, modified lime reactivity R3 method) assess reactivities. In study, including incinerated bottom ash (IBA), colored soda-lime glass powders, fluorescent lamp powder (FLGP) pulverized fly (PFA) were tested evaluate It was found that there moderate correlations between 180-day strengths (RS180day) standard mortars bound water content or portlandite consumption method. Moreover, mortar strength values test adequately correlated with RS180day mortars. comparison, had poor correlation RS180day. addition, studied can be classified lowly-reactive moderately-reactive (MGP, BGP, WGP, GGP, FLGP) highly-reactive
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