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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    節能與環保

    改性再生大骨料混凝土耐久性能研究
    改性再生大骨料混凝土耐久性能研究
    • 黃卓杰1,陳建國1,陳德偉2,吳光軍1,杜 念1,閆志勇3
    2021年第7期
    摘要
    引用本文
    摘 ? 要:通過單摻、復摻無機材料和有機材料對再生大骨料進行改性處理,研究了改性再生大骨料混凝土(MAC)與天然骨料混凝土(NAC)、再生骨料混凝土(RAC)的耐久性能差異。結果表明:相同齡期下,NAC的抗滲性能、抗氯離子滲透性能及抗碳化性能均最好,MAC次之,RAC最差;隨著齡期的延長,RAC碳化深度的增幅最大,MAC次之,NAC最小。 Abstract: The recycled big aggregate was modified through the single admixture and compound admixture of inorganic materials and organic materials, the difference in durability between modified recycled big aggregate concrete(MAC), natural aggregate concrete(NAC) and recycled aggregate concrete(RAC) was studied. The results show that at the same age, NAC has the best anti-permeability, anti-chloride ion permeability and anti-carbonization properties, followed by MAC, and RAC is the worst. With the extension of age, the increase in RAC carbonization depth is the largest, followed by MAC, and NAC is the smallest.
    黃卓杰,陳建國,陳德偉,等.改性再生大骨料混凝土耐久性能研究[J].混凝土與水泥制品,2021(7):93-97. HUANG Z J,CHEN J G,CHEN D W,et al.Study on the Durability of Modified Recycled Big Aggregate Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):93-97.
    廢玻璃粉混凝土的動態損傷本構方程
    廢玻璃粉混凝土的動態損傷本構方程
    • 柯國軍1,2,3,許 欣1,2,3,方耀楚1,2,3,邱浩群1
    2021年第7期
    摘要
    引用本文
    摘 ? 要:研究了不同摻量的廢玻璃粉混凝土在1.5 m和2.0 m落錘高度下的動態力學性能,并提出了一種表征廢玻璃粉混凝土動態力學響應的動態損傷本構方程。結果表明:廢玻璃粉混凝土的抗壓強度隨著廢玻璃粉摻量的增加而降低;利用MATLAB程序計算得到的分形維數來表征廢玻璃粉混凝土的損傷因子是完全可行的;修正后的ZWT非線性率型本構方程的理論曲線與試驗曲線吻合較好。 Abstract: The dynamic mechanical properties of waste glass powder concrete with different content under 1.5 m and 2.0 m drop weight height were studied, and a dynamic damage constitutive equation was put forward to characterize the dynamic response of waste glass powder concrete. The results show that the compressive strength of the waste glass powder concrete gradually decreases with the increase of the waste glass powder content. It is completely feasible to use the fractal dimension calculated by MATLAB program to characterize the damage factor of waste glass powder concrete, and the theoretical curve of the modified ZWT nonlinear rate constitutive equation is in good agreement with the experimental curve.
    柯國軍,許欣,方耀楚,等.廢玻璃粉混凝土的動態損傷本構方程[J].混凝土與水泥制品,2021(7):98-101. KE G J,XU X,FANG Y C,et al.Dynamic Damage Constitutive Equation of Waste Glass Powder Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):98-101.
    外加劑對鉬尾礦砂抹面砂漿力學性能的影響
    外加劑對鉬尾礦砂抹面砂漿力學性能的影響
    • 馬 挺1,張美香2,田崇霏3,白召軍1,劉正輝2,羅忠濤2,劉錦濤4
    2021年第7期
    摘要
    引用本文
    摘 ? 要:研究了不同摻量的可再分散乳膠粉、纖維素醚、聚羧酸高效減水劑單摻對鉬尾礦砂抹面砂漿力學性能的影響,并通過正交試驗確定了3種外加劑對砂漿性能影響的順序,得出了鉬尾礦砂抹面砂漿最佳配合比為膠砂比1∶3,減水劑0.8%,羥丙基甲基纖維素醚0.15%,可再分散乳膠粉1%。 Abstract: The effects of three admixtures, redispersible latex powder, cellulose ether and polycarboxylate superplasticizer on the mechanical properties of molybdenum tailing mortar were studied. The order of the effects of the three additives on the performance of the mortar was determined through orthogonal experiments, and the best ratio of molybdenum tailings plastering mortar was found to be 1∶3, ?the water reducing agent was 0.8%, and the hydroxypropyl methyl fiber was 15% and redispersible latex powder was 1%.
    馬挺,張美香,田崇霏,等.外加劑對鉬尾礦砂抹面砂漿力學性能的影響[J].混凝土與水泥制品,2021(7):102-104. MA T,ZHANG M X,TIAN C F,et al.Effects of Additives on the Performance of Molybdenum Tailings Plastering Mortar[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(7):102-104.
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