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Kalra N Jain MC Joshi HC Chaudhary R Kumar S Pathak H Sharma SK Kumar V Kumar R Harit RC Khan SA Hussain MZ 《Environmental monitoring and assessment》2003,87(1):93-109
Field experiments were carried out during 1996–97at Gulawathi, Muthiani and Salarpur Villages, IARI Farm, NewDelhi and NCPP Campus, Dadri to evaluate changes in soilcharacteristics and growth of wheat (Triticum aestivum L.),mustard (Brassica juncea L.), lentil (Lence esculentaMoench.), rice (Oryza sativa L.) and maize (Zea mays L.) byvarying amounts of flyash addition (up to 50t ha-1) in soils atsowing/transplanting time of crops. Flyash addition in areasadjoining NCPP Thermal Power Plant, Dadri, Ghaziabad, U.P.ranged from 5–12 t ha-1 yr-1 in 1995–96. Shoot and root growthand yield of test crops at different locations after flyashincorporation resulted in beneficial effects of flyashaddition in most cases. The silt dominant texture of flyashimproved loamy sand to sandy loam textures of the surfacesoils at the farmers' fields. The increased growth in yield ofcrops with flyash incorporation was possibly due tomodifications in soil moisture retention and transmissioncharacteristics, bulk density, physico-chemical characterssuch as pH and EC and organic carbon content. The response offlyash addition in the soil on soil health and cropproductivity needs to be evaluated on long-term sustainableaspects. 相似文献
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粉煤灰分选工艺流程的改进 总被引:2,自引:0,他引:2
利用闲置设备进行流程改进,提高了粉煤灰的利用率,解决了制砖所需的细骨料。每年节省运灰费用200多万元,具有良好的经济效益和环境效益 相似文献
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基于文献[1]提出的最大往返剪切作用面上的液化应力条件和粉煤灰的动三轴试验数据,运用回归分析方法拟合曲线及相关参数建立了粉煤灰的破坏应力条件,并应用F检验法对参数的回归效果进行了检验,检验结果表明参数的回归效果高度显著。得出的破坏应力条件表明初始剪应力与动剪应力的倒数间并不呈线性关系,而是二次多项式关系,这与张克绪所提出的应力条件存在着差异。因此,可初步认为张克绪的液化应力条件不能直接运用于粉煤灰。 相似文献
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摘要:本文介绍了粉煤灰的来源、物理化学特性及其产生环境污染,重点探讨了粉煤友的综合利用途径,并简单阐述了其发展前景与存在问题。 相似文献
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再生塑料粉煤灰复合材料井盖 总被引:1,自引:0,他引:1
将废塑料、粉煤灰、农作物秸杆等固体废弃物通过自主创新技术成功地制备了市政工程制品:井盖、井箅等。具有抗压、抗冲击性能优良;成本低;环境友好;美观;安全等特性。 相似文献
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采用粉煤灰、褐煤、三元肥、微肥等为原料制取复合肥。利用正交试验法,经过大量实践找到了最佳配肥方案,并设计了工业生产方法和工艺要求,比较完整地阐述了从试验到工业生产的整个过程。 相似文献
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