本文選題：耐堿玻璃纖維　切入點：泡沫輕質混凝土　出處：《工業(yè)建筑》2017年09期

【摘要】：為研究玻璃纖維對泡沫輕質混凝土力學性能的影響,對澆筑密度為700 kg/m3的泡沫輕質混凝土摻加4組不同長度、不同含量的耐堿玻璃纖維后,開展壓縮試驗、劈裂抗拉試驗、抗折強度試驗(三點式),并對數(shù)據(jù)整理分析。研究結果表明:隨著纖維含量的增加,4組纖維泡沫輕質混凝土的無側限抗壓強度、劈裂抗拉強度和抗折強度均呈現(xiàn)先增加后減小的現(xiàn)象;摻加玻璃纖維對泡沫輕質混凝土抗折強度提高效果最優(yōu),劈裂抗拉強度次之,無側限抗壓強度最弱;摻加纖維前后,泡沫輕質混凝土均表現(xiàn)為明顯的脆性,但摻加纖維可明顯增強泡沫輕質混凝土的韌性。玻璃纖維的摻加對抗折強度提高效果最優(yōu),劈裂抗拉強度次之,無側限抗壓強度最弱。
[Abstract]:In order to study the effect of glass fiber on mechanical properties of light foamed concrete, four groups of alkali-resistant glass fibers of different length and content were added to the light foamed concrete with density of 700 kg/m3, then the compression test and splitting tensile test were carried out.Flexural strength test (three points), and data collation and analysis.The results show that with the increase of fiber content, the unconfined compressive strength, splitting tensile strength and flexural strength of four groups of fiber foamed lightweight concrete are increased first and then decreased.The flexural strength of foamed lightweight concrete was improved by adding fiberglass, followed by split tensile strength and unconfined compressive strength, and when fiber was added, the flexural strength of foamed lightweight concrete showed obvious brittleness.However, the toughness of light foamed concrete can be obviously enhanced by adding fiber.The effect of adding glass fiber to the flexural strength is the best, the splitting tensile strength is the second, and the unconfined compressive strength is the weakest.
【作者單位】： 西南交通大學土木工程學院;西南交通大學高速鐵路線路工程教育部重點實驗室;福州大學材料科學與工程學院;
【基金】：中國鐵路總公司科技研究開發(fā)計劃課題(2015G002-K) 四川省科技計劃項目(2016JY0005)
【分類號】：TU528.2

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