气候变化领域集成服务门户(CCPortal): Sustainable and durable performance of pozzolanic additions to prevent alkali-silica reaction (ASR) promoted by aggregates with different reaction rates

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DOI	10.3390/app10249042
	Sustainable and durable performance of pozzolanic additions to prevent alkali-silica reaction (ASR) promoted by aggregates with different reaction rates
	Menéndez E.; Sanjuán M.Á.; García-Roves R.; Argiz C.; Recino H.
发表日期	2020
ISSN	20763417
起始页码	1
结束页码	24
卷号	10 期号:24
英文摘要	The increased use of industrial wastes and by-products to produce concretes and blended cements is a lever to achieve carbon neutrality. Furthermore, they could improve their durability. Some pozzolanic additions can minimize the alkali-silica reaction (ASR), which is a well-known deleterious process that occurs between some reactive aggregates and the alkaline pore solution found in mortars and concretes. This work quantifies the efficiency of four pozzolanic materials (natural pozzolan, P, siliceous coal fly ash, V, silica fume, D, and blast-furnace slag, S) assessed by means of compressive strength testing, open porosity, ASR-expansion measurements, and SEM microscopy. Accelerated expansion tests were performed in mortar bars with a cement/sand ratio of 1/2.25 and a water/cement ratio of 0.47, two reactive aggregates and a non-reactive one. The major contributions of this paper are: (i) The more aggregate reactivity is, the higher ASR mitigation level was found when additions were added and (ii) The best additions for ASR inhibition are silica fume and fly ash. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
英文关键词	Alkali-aggregate reaction (AAR) mitigation; Blast-furnace slag; Cement replacement; Durability; Microstructure; Natural pozzolan; Silica fume; Siliceous coal fly ash; Supplementary cementitious materials; Transport properties
来源期刊	Applied Sciences (Switzerland)
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176560
作者单位	The Eduardo Torroja Institute for Construction Science (Spanish National Research Council, CSIC), C/Serrano Galvache, 4, Madrid, 28033, Spain; Civil Engineering School, Technical University of Madrid (UPM), C/Profesor Aranguren, 3, Ciudad Universitaria, Madrid, 28040, Spain
推荐引用方式 GB/T 7714	Menéndez E.,Sanjuán M.Á.,García-Roves R.,et al. Sustainable and durable performance of pozzolanic additions to prevent alkali-silica reaction (ASR) promoted by aggregates with different reaction rates[J],2020,10(24).
APA	Menéndez E.,Sanjuán M.Á.,García-Roves R.,Argiz C.,&Recino H..(2020).Sustainable and durable performance of pozzolanic additions to prevent alkali-silica reaction (ASR) promoted by aggregates with different reaction rates.Applied Sciences (Switzerland),10(24).
MLA	Menéndez E.,et al."Sustainable and durable performance of pozzolanic additions to prevent alkali-silica reaction (ASR) promoted by aggregates with different reaction rates".Applied Sciences (Switzerland) 10.24(2020).