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Sustainable Concrete by Using Waste Foundry Sand and Carbon Fibre 利用废弃铸造砂和碳纤维的可持续混凝土
Pub Date : 2020-06-26 DOI: 10.2139/ssrn.3688412
Ankush R. Pendhari, Dr. P. B. Nagarnaik
The generation of solid waste i.e. used foundry sand (UFS) from the metal casting industries is growing continuously at disturbing quantity. In this study, an attempt is made to replace the fine aggregates by 30% using used foundry sand in the concrete. In addition to this carbon fiber added 0.25%, 0.50%, 0.75% and 1.00% to the volume of results indicate that the concrete of used foundry sand with 0.5% carbon fiber performance better than conventional sand concrete. Based on the test results, it is endorsed that UFS and carbon fiber can be used effectively in the manufacture of concrete without affecting the strength properties of concrete.
从金属铸造工业中产生的固体废物,即废旧铸造砂(UFS)正在以令人不安的数量持续增长。本研究尝试用废旧铸造砂代替混凝土中30%的细集料。在此基础上,碳纤维的掺量分别为0.25%、0.50%、0.75%和1.00%,结果表明,掺0.5%碳纤维的废铸造砂混凝土性能优于常规砂混凝土。试验结果表明,在不影响混凝土强度性能的情况下,UFS和碳纤维可以有效地用于混凝土的制造。
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引用次数: 0
Response of Fish Pond Effluent on Soil Chemical Properties and Growth of Cucumber (Cucumis Sativus) in Igbariam South Eastern, Nigeria 尼日利亚igbarariam东南部鱼塘污水对土壤化学性质和黄瓜生长的影响
Pub Date : 2019-10-03 DOI: 10.2139/ssrn.3463863
Leonard Nsoanya
The response of fish pond effluent on soil chemical properties and growth of cucumber (Cucumis sativus) in Igbariam South Eastern, Nigeria was studied during 2018 farming season at the Teaching and Research Farm of the Department of Soil Science, Faculty of Agriculture, Chukwuemeka Odumegwu Ojukwu University, Igbariam Campus, Anambra State, Nigeria. The field experiment which was laid out in a Randomized Complete Block Design (RCBD), comprised three treatments and three replications as follows: T1 – Control (No treatment): T2 – Fish Pond Effluent (40,000 litres/hectare) and T3 – Fish Pond Effluent (20,000 litres/hectare) + 200kg/ha fertilizer (NPK 20: 10:10). Results obtained revealed that, the treatments were significantly (P=0.05) different on some chemical properties of soil and Growth Parameters of Cucumber. The highest values of the Soil Chemical Properties (Available Phosphorus -6.6 mg/kg; Total Nitrogen -0.8g/kg; Organic Carbon – 5.8g/kg; Organic Matter – 10.1g/kg were recorded at the plot where Fish Pond Effluent was applied at the rate of 20,000 litres/hectare with 200kg/ha of fertilizer (NPK 20: 10:10). Fish Pond Effluent had no significant effect on the pH of the soil as the pH of the treated plots was almost at par with the Control. While the highest values of Number of leaves (37.9), Vine length (39.47cm) and Number of Branches (2.80) were also recorded at the plot where fish pond effluent was applied at the rate of 20,000L/ha with 200kg/ha of NPK fertilizer (20:10:10) at 7 WAP.
2018年农作季节,在尼日利亚阿南布拉州伊巴里亚姆校区Chukwuemeka Odumegwu Ojukwu大学农学院土壤科学系教学与研究农场,研究了鱼塘污水对尼日利亚东南部伊巴里亚姆地区土壤化学性质和黄瓜生长的影响。田间试验采用随机完全区组设计(RCBD),包括三个处理和三个重复:T1 -对照(无处理);T2 -鱼塘污水(40,000升/公顷)和T3 -鱼塘污水(20,000升/公顷)+ 200公斤/公顷肥料(NPK 20:10:10)。结果表明,不同处理对土壤部分化学性质和黄瓜生长参数影响显著(P=0.05)。土壤化学性质最高值(速效磷-6.6 mg/kg;总氮-0.8g/kg;有机碳- 5.8g/kg;在鱼塘污水以20,000升/公顷的速度施用200公斤/公顷的肥料(氮磷钾20:10:10)时,有机物质- 10.1克/公斤的记录。鱼塘污水对土壤的酸碱度没有显著影响,因为处理过的地块的酸碱度几乎与对照组相当。在7 WAP条件下,鱼塘污水用量为20000 l /ha,氮磷钾用量为200kg/ha(20:10:10)时,叶片数(37.9)、藤长(39.47cm)和枝数(2.80 cm)也均达到最高值。
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引用次数: 1
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SRPN: Other Waste (Topic)
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