苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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节能与环保

植生混凝土的性能研究及在坝坡防护工程中的应用
植生混凝土的性能研究及在坝坡防护工程中的应用
  • 董全文1,贾文文2,谢慧东2
2021年第11期
摘要
引用本文
摘   要:研究了不同成型方式和水灰比对植生混凝土性能的影响。结果表明:振动成型的植生混凝土的连续孔隙率最小,插捣成型的植生混凝土的抗压强度最高,压捣成型的植生混凝土的连续孔隙率和抗压强度均满足相关设计要求;植生混凝土的抗压强度随着水灰比的增大而降低,连续孔隙率随着水灰比的增大而增大;当水灰比为0.27时,采用压捣成型方式制备得到的植生混凝土的性能满足相关设计要求,并已成功应用于济南赵庄险工48#坝坝坡防护工程。 Abstract: The effects of different forming methods and water-cement ratio on the properties of planting concrete were studied. The results show that the porosity of the planting concrete based on vibration molding is the smallest, the compressive strength of the planting concrete based on plug tamping is the highest, and the porosity and compressive strength of the planting concrete based on pressure tamping meet the relevant design requirements. The compressive strength of planting concrete decreases with the increase of water-cement ratio, and the porosity increases with the increase of water-cement ratio. When the water-cement ratio is 0.27, the performance of planting concrete prepared by pressure tamping method meets the relevant design requirements, and has been successfully applied to the dam slope protection project of Zhaozhuang dangerous engineering 48# dam in Jinan.
董全文,贾文文,谢慧东.植生混凝土的性能研究及在坝坡防护工程中的应用[J].混凝土与水泥制品,2021(11):94-98. DONG Q W,JIA W W,XIE H D.Study on Performance of Planting Concrete and Its Application in Dam Slope Protection Engineering[J].China Concrete and Cement Products,2021(11):94-98.
城市垃圾熔融残渣对泡沫混凝土性能的影响
城市垃圾熔融残渣对泡沫混凝土性能的影响
  • 李群杰1, 欧阳东1, 赵 倩2,3,黄柯柯2,3,林文伟1,熊军红1
2021年第11期
摘要
引用本文
摘   要:研究了矿渣、粉煤灰以及热等离子技术处理城市垃圾后的熔融残渣(MWTPT)替代10%的水泥对泡沫混凝土性能的影响,并通过XRD、水化热和SEM方法分析了MWTPT的作用机理。结果表明:MWTPT可以作为矿物掺合料替代水泥制备泡沫混凝土;掺MWTPT泡沫混凝土的抗压强度在后期优于掺粉煤灰的泡沫混凝土,抗折强度在早期优于掺矿渣泡沫混凝土和掺粉煤灰泡沫混凝土;与掺粉煤灰泡沫混凝土相比,掺MWTPT泡沫混凝土的7 d、15 d抗折强度分别提高了19.1%、31.8%。 Abstract: The effects of slag, fly ash and the municipal waste residues after treated by thermal plasma technology(MWTPT) replacing 10% cement on the performance of foamed concrete were studied, and the mechanism of MWTPT was analyzed by XRD, hydration heat and SEM. The results show that MWTPT can be used as mineral admixture instead of cement to prepare foamed concrete. The compressive strength of the foamed concrete with MWTPT is better than that of the foamed concrete with fly ash in the later stage, and the flexural strength is better than that of the foamed concrete with slag and the foamed concrete with fly ash in the early stage. The 7 d and 15 d flexural strength of the foamed concrete with MWTPT are 19.1% and 31.8% higher than those of the foamed concrete with fly ash respectively.
李群杰,欧阳东,赵倩,等.城市垃圾熔融残渣对泡沫混凝土性能的影响[J].混凝土与水泥制品,2021(11):90-93. LI Q J,OUYANG D,ZHAO Q,et al.Influence of the Municipal Waste Residues on the Properties of Foamed Concrete[J].China Concrete and Cement Products,2021(11):90-93.
利用脱硫石膏浆液制备高强水泥基自流平砂浆的应用研究
利用脱硫石膏浆液制备高强水泥基自流平砂浆的应用研究
  • 徐风广,杨凤玲,侯海军,陈小卫
2021年第11期
摘要
引用本文
摘   要:以铝酸盐水泥为主要胶凝材料,掺入脱硫石膏浆液和普通硅酸盐水泥,制备了地面用水泥基自流平砂浆,通过宏观性能测试(强度、耐磨性和尺寸变化率)和XRD分析,研究了脱硫石膏浆液对水泥基自流平砂浆性能的影响。结果表明:当铝酸盐水泥掺量为30.3%~36.9%、脱硫石膏浆液掺量为18%~28%、普通硅酸盐水泥掺量为5.3%~6.0%、河砂掺量为35%~39%时,制备的水泥基自流平砂浆具有强度高、耐磨性好和收缩率低的特点;脱硫石膏浆液能促进基体中早期AFt的生成,保证后期AFt的生成量,从而提高脱硫石膏浆液水泥基自流平砂浆的强度。 Abstract: The cement-based self-leveling mortar for ground was prepared by using aluminate cement as main cementitious material, adding desulfurization gypsum slurry and ordinary portland cement. The influence of desulfurization gypsum slurry on the properties of cement-based self-leveling mortar was studied by macro performance tests (strength, wear resistance and dimensional change rate) and XRD analysis. The results show that the cement-based self-leveling mortar has the characteristics of high strength, good wear resistance and low shrinkage when the content of aluminate cement is 30.3%~36.9%, the content of desulfurization gypsum slurry is 18%~28%, the content of ordinary portland cement is 5.3%~6.0%, and the content of river sand is 35%~39%. The desulfurized gypsum slurry can promote the formation of early AFt in the matrix and ensure the generation of AFt in the later period, thereby improving the strength of the cement-based self-leveling mortar of the desulfurized gypsum slurry.
徐风广,杨凤玲,侯海军,等.利用脱硫石膏浆液制备高强水泥基自流平砂浆的应用研究[J].混凝土与水泥制品,2021(11):85-89. XU Feng-guang, YANG Feng-ling, HOU Hai-jun,et al.Rescarch on Application of Preparation of High Strength Cement-based Self-leveling Mortar with Desulfurization Gypsum Slurry[J].China Concrete and Cement Products,2021(11):85-89.
钢渣微粉对超高性能混凝土(UHPC)性能的 影响
钢渣微粉对超高性能混凝土(UHPC)性能的 影响
  • 唐咸远,郭 彬,马杰灵,罗 杰
2021年第11期
摘要
引用本文
摘   要:研究了钢渣微粉替代石英粉对超高性能混凝土(UHPC)性能的影响。结果表明:水胶比分别为0.18、0.19的UHPC试件的28 d抗压强度均在120 MPa以上,且水胶比为0.19的UHPC的工作性更好,流动度为195 mm;钢渣微粉替代石英粉对UHPC试件的抗压强度无明显影响;在钢渣微粉掺量为100%的情况下,控制水胶比为0.20、水灰比为0.35、胶砂比为1.63时,可配制28 d抗压强度为147.5 MPa的UHPC。 Abstract: The effect of steel slag powder instead of quartz powder on the properties of ultra-high performance concrete (UHPC) was studied. The results show that the 28 d compressive strength of UHPC specimens with water-binder ratio of 0.18 and 0.19 is more than 120 MPa, and the workability of UHPC with water-binder ratio of 0.19 is better and the fluidity is 195 mm. The substitution of steel slag powder for quartz powder has no obvious effect on the compressive strength of UHPC specimens. When the content of steel slag powder is 100%, the water-binder ratio is 0.20, the water-cement ratio is 0.35 and the binder-sand ratio is 1.63, and the 28 d compressive strength of UHPC can reach 147.5 MPa.
唐咸远,郭彬,马杰灵,等.钢渣微粉对超高性能混凝土(UHPC)性能的影响[J].混凝土与水泥制品,2021(11):82-84,89. TANG X y,GUO B,MA J l,et al.Effect of Steel Slag Powder on the Properties of Ultra-high Performance Concrete (UHPC)[J].China Concrete and Cement Products,2021(11):82-84,89.
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