纖維水泥及制品_2021_《混凝土與水泥制品》雜志社

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纖維水泥及制品

BFRP增強水泥砂漿薄板力學性能試驗研究

劉蒲云1，雷夢珂2,3，汪昕2,3，王凱輝2,3

2021年第10期

摘要

引用本文

摘 ? 要：通過四點彎曲試驗和拉伸試驗研究了灰砂比、增強材料種類及布置方式對水泥砂漿薄板力學性能的影響。結果表明：增大灰砂比能提高試件的彎曲開裂荷載；縮小BFRP筋的筋網尺寸能提高試件的極限荷載；增大BFRP網格厚度能改善試件的拉伸能力；摻短切玄武巖纖維的BFRP網格增強試件的抗彎和抗拉能力較好，是FRP永久模板的優選方案。 Abstract: Through four-point bending test and tensile test, the effect of cement-sand ratio, reinforcement material type and layout method on the mechanical properties of cement mortar slab was studied. The results show that the increase of cement-sand ratio can enhence the bending cracking load of the specimen. Reducing the size of BFRP bar mesh can increase the ultimate load of the specimen. Increasing the thickness of the BFRP mesh can improve the tensile capacity of the specimen. The BFRP mesh reinforced specimen mixed with chopped basalt fiber has good flexural and tensile capacity, which is the preferred scheme of FRP permanent formwork.

劉蒲云,雷夢珂,汪昕,等.BFRP增強水泥砂漿薄板力學性能試驗研究[J].混凝土與水泥制品,2021(10):52-56,61. LIU P Y,LEI M K,WANG X,et al.Experimental Study on Mechanical Properties of BFRP Reinforced Cement Mortar Slab[J].China Concrete and Cement Products,2021(10):52-56,61.

玄武巖纖維混凝土彎曲破壞特征與韌性分析

王啟1,2，趙儉斌1，董浩1，張延年1

2021年第10期

摘要

引用本文

摘 ? 要：通過三分點加載試驗，研究了玄武巖纖維體積摻量（0、0.25%、0.50%、0.75%、1.00%、1.25%）和長度（6 mm、12 mm）對混凝土彎曲性能的影響。結果表明：長度為12 mm的玄武巖纖維對混凝土抗彎強度的改善效果較好；隨著玄武巖纖維摻量的增加，試件的抗彎強度先增后減，且玄武巖纖維的最優摻量為1.00%；玄武巖纖維雖可改善混凝土的等效初始彎曲強度，但對初始彎曲韌度比影響較小，即對峰值荷載前的彎曲韌性改善效果較小。 Abstract: Through three-point loading test, the effect of basalt fiber volume content（0、0.25%、0.50%、0.75%、1.00%、1.25%） and basalt fiber length（6 mm、12 mm） on the flexural properties of concrete was studied. The results show that basalt fiber with the length of 12 mm is more beneficial to bending strength. With the increase of basalt fiber content, the bending strength of concrete first increases and then decreases, and the optimal basalt fiber content is 1.00%. Although basalt fiber can improve the equivalent initial bending strength of concrete, it has little effect on the initial bending toughness ratio, which means there is no obvious improvement of bending toughness before peak load.

王啟,趙儉斌,董,浩,等.玄武巖纖維混凝土彎曲破壞特征與韌性分析[J].混凝土與水泥制品,2021(10):48-51. WANG Q,ZHAO J B,DONG H,et al.Analysis of Bending Failure Characteristics and Toughness of Basalt Fiber Reinforced Concrete[J].China Concrete and Cement Products,2021(10):48-51.

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