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    蘇州混凝土水泥制品研究院有限公司

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    纖維水泥及制品

    高延性劍麻纖維水泥基路面材料配合比研究
    高延性劍麻纖維水泥基路面材料配合比研究
    • 陳偉宏1,2,賈云飛1,姚仲泳3,顏學淵1
    2022年第5期
    摘要
    引用本文
    摘 ? 要:通過正交試驗研究了水膠比、砂膠比、粉煤灰摻量和劍麻纖維摻量對水泥基路面材料抗壓性能和彎拉性能的影響。結果表明,高延性劍麻纖維水泥基路面材料的最佳配合比為:水膠比0.30、砂膠比0.4、粉煤灰摻量30%、劍麻纖維摻量0.5%,此時,試件的彎拉強度滿足JTG D40—2011《公路水泥混凝土路面設計規范》的要求,且抗壓強度較高,為66.62 MPa。 Abstract: The effects of water-binder ratio, sand-binder ratio, fly ash content and sisal fiber content on the compressive properties and flexural tensile properties of cement-based pavement materials were studied by orthogonal experiments. The results show that the optimal mix proportion of high ductility sisal fiber cement-based pavement material is: water-binder ratio of 0.30, sand binder ratio of 0.4, fly ash content of 30% and sisal fiber content of 0.5%, and the flexural tensile strength of the specimen meets the requirements of JTG D40—2011 Specifications for Design of Highway Cement ?Concrete Pavement, and the compressive strength is relatively high, which is 66.62 MPa.
    陳偉宏,賈云飛,姚仲泳,等.高延性劍麻纖維水泥基路面材料配合比研究[J].混凝土與水泥制品,2022(5):50-54,60. CHEN W H,JIA Y F,YAO Z Y,et al.Study on Mix Proportion of High Ductility Sisal Fiber Cement-based Pavement Materials[J].China Concrete and Cement Products,2022(5):50-54,60.
    二維纖維增強材料對聚合物水泥砂漿拉伸性能的影響
    二維纖維增強材料對聚合物水泥砂漿拉伸性能的影響
    • 郭潤開1,龍天艷2,王 娟2,徐建設1
    2022年第5期
    摘要
    引用本文
    摘 ? 要:為了改善水泥基材料的抗裂性能,滿足建筑在加固、修復過程中對修補材料高韌性的需求,將耐堿玻璃纖維網、玻璃纖維方格布、玻璃纖維氈3種二維纖維分別摻入到聚合物水泥砂漿中,研究了不同二維纖維增強材料對聚合物水泥砂漿拉伸性能的影響,通過應力-應變曲線和拉伸破壞形態揭示了二維纖維增強材料對聚合物水泥砂漿的作用機理,通過對摻二維纖維增強材料聚合物水泥砂漿進行浸水和堿溶液處理,評價了其耐水、耐堿性能。結果表明:3種二維纖維增強材料均能提高聚合物水泥砂漿的拉伸強度與斷裂伸長率,其中,玻璃纖維方格布對提升聚合物水泥砂漿的拉伸強度最有利;浸水和堿溶液處理均會影響摻二維纖維增強材料聚合物水泥砂漿的拉伸性能,其中,堿溶液處理更不利。 Abstract: In order to improve the crack resistance of cement-based materials and meet the requirements for high toughness of repair materials in the process of building reinforcement and repair, three two-dimensional fibers of alkali resistant glass fiber mesh, glass fiber checkered cloth, glass fiber felt were added into polymer cement mortar. The effect of different two-dimensional fiber reinforced materials on the tensile properties of polymer cement mortar was studied. The action mechanism of two-dimensional fiber reinforced materials on polymer cement mortar was revealed by stress-strain curve and tensile failure mode. The water resistance and alkali resistance of polymer cement mortar mixed with two-dimensional fiber reinforced materials were evaluated by soaking in water and alkali solution. The results show that the three kinds of two-dimensional fiber reinforced materials can increase the tensile strength and elongation at break of the polymer cement mortar, among which the glass fiber checkered cloth is most beneficial to the improvement of the tensile strength of polymer cement mortar. Both water immersion and alkali solution treatment will affect the tensile properties of polymer cement mortar mixed with two-dimensional fiber reinforced materials, among which alkali solution treatment is more unfavorable.
    郭潤開,龍天艷,王娟,等.二維纖維增強材料對聚合物水泥砂漿拉伸性能的影響[J].混凝土與水泥制品,2022(5):55-60. GUO R K,LONG T Y,WANG J,et al.Influence of Two-dimensional Fiber Reinforced Materials on Tensile Properties of Polymer Cement Mortar[J].China Concrete and Cement Products,2022(5):55-60.
    預處理椰殼纖維對水泥基材料性能的影響研究
    預處理椰殼纖維對水泥基材料性能的影響研究
    • 潘宜健1,2,王 政1,劉雨時1
    2022年第5期
    摘要
    引用本文
    摘 ? 要:采用堿溶液浸泡和煮沸對椰殼纖維進行預處理,研究了處理時長對椰殼纖維吸水率、表面形貌、拉伸強度、彈性模量和表面靜摩擦力的影響,并將預處理椰殼纖維摻入到水泥基材料中,研究了預處理椰殼纖維對水泥基材料拉伸性能和彎曲性能的影響。結果表明:與未處理椰殼纖維相比,煮沸處理2 h或堿處理5 h后,椰殼纖維的吸水率分別降低了40.25%、48.56%,拉伸強度分別降低了3.26%、5.54%,彈性模量分別降低了8.71%、3.32%,表面靜摩擦力分別提高了209.41%、262.35%;采用濃度為15%的有機硅烷溶液浸泡預處理椰殼纖維后,再將預處理椰殼纖維分別按質量比m堿處理∶m煮沸處理=3∶1、m堿處理∶m煮沸處理=1∶1混摻時,水泥基材料的拉伸強度、彎曲強度較空白組分別提高了76.08%、68.04%。 Abstract: The coir fiber was pretreated by soaking and boiling in alkali solution, and the effects of treatment time on water absorption, surface morphology, tensile strength, elastic modulus and surface static friction of coir fiber were studied. The pretreated coir fiber was incorporated into cement-based material, and the effect of the pretreated coir fiber on the tensile and bending properties of cement-based material was studied. The results show that compared with the untreated coir fiber, after boiling for 2 h or alkali treatment for 5 h, the water absorption of coir fiber decreases by 40.25% and 48.56%, the tensile strength decreases by 3.26% and 5.54%, the elastic modulus decreases by 8.71% and 3.32%, and the surface static friction increases by 209.41% and 262.35% respectively. After the pretreated coir fiber is soaked in organosilane solution with the concentration of 15%, and then the pretreated coir fiber is blended according to the mass ratio of malkali treatmen∶mboiling treatment=3∶1 and malkali treatmen∶mboiling treatment=1∶1, the tensile strength and flexural strength of the cement-based material is increased by 76.08% and 68.04% respectively compared with the blank group.
    潘宜健,王政,劉雨時.預處理椰殼纖維對水泥基材料性能的影響研究[J].混凝土與水泥制品,2022(5):61-66. PAN Y J,WANG Z,LIU Y S.Study on the Influence of Pretreated Coir Fiber on the Properties of Cement-based Materials[J].China Concrete and Cement Products,2022(5):61-66.
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