{"title":"废钢丝帘线在混凝土中的应用","authors":"G. Girskas, D. Nagrockienė","doi":"10.1515/cons-2016-0004","DOIUrl":null,"url":null,"abstract":"Abstract Materials used for the study: Portland cement CEM I 42.5 R, 4/16 gravel, 0/4 sand. The fine aggregate in four concrete mixtures was substituted with steel cord scrap added at 1.5 %, 3.0 % and 4.5 %. Water absorption and compressive strength was measured in concrete specimens after 7 and 28 days of curing. Total, closed and open porosity was measured in the modified concrete specimens. The tests of predicted freeze-thaw cycles were done. Test results showed that the substitution of fine aggregate with steel cord scrap results in lower water absorption and higher compressive strength in the modified concrete specimens. The porosity parameters have also changed: the closed porosity has increased and consequently the freeze-thaw resistance of modified concrete has improved.","PeriodicalId":22024,"journal":{"name":"Stroitel stvo nauka i obrazovanie [Construction Science and Education]","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"14","resultStr":"{\"title\":\"The Use of Steel Cord Scrap in Concrete\",\"authors\":\"G. Girskas, D. Nagrockienė\",\"doi\":\"10.1515/cons-2016-0004\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Materials used for the study: Portland cement CEM I 42.5 R, 4/16 gravel, 0/4 sand. The fine aggregate in four concrete mixtures was substituted with steel cord scrap added at 1.5 %, 3.0 % and 4.5 %. Water absorption and compressive strength was measured in concrete specimens after 7 and 28 days of curing. Total, closed and open porosity was measured in the modified concrete specimens. The tests of predicted freeze-thaw cycles were done. Test results showed that the substitution of fine aggregate with steel cord scrap results in lower water absorption and higher compressive strength in the modified concrete specimens. The porosity parameters have also changed: the closed porosity has increased and consequently the freeze-thaw resistance of modified concrete has improved.\",\"PeriodicalId\":22024,\"journal\":{\"name\":\"Stroitel stvo nauka i obrazovanie [Construction Science and Education]\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"14\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Stroitel stvo nauka i obrazovanie [Construction Science and Education]\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1515/cons-2016-0004\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Stroitel stvo nauka i obrazovanie [Construction Science and Education]","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/cons-2016-0004","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 14
摘要
研究材料:波特兰水泥CEM I 42.5 R, 4/16碎石，0/4砂。用添加量分别为1.5%、3.0%和4.5%的钢丝帘线废钢代替4种混凝土混合料中的细骨料。分别在养护7天和28天后测定混凝土试样的吸水率和抗压强度。测定了改性混凝土试件的总孔隙率、闭孔隙率和开孔隙率。对预测的冻融循环进行了试验。试验结果表明，用钢丝帘片代替细骨料，改性混凝土试样的吸水率降低，抗压强度提高。孔隙率参数也发生了变化:封闭孔隙率增加，从而提高了改性混凝土的抗冻融性能。
Abstract Materials used for the study: Portland cement CEM I 42.5 R, 4/16 gravel, 0/4 sand. The fine aggregate in four concrete mixtures was substituted with steel cord scrap added at 1.5 %, 3.0 % and 4.5 %. Water absorption and compressive strength was measured in concrete specimens after 7 and 28 days of curing. Total, closed and open porosity was measured in the modified concrete specimens. The tests of predicted freeze-thaw cycles were done. Test results showed that the substitution of fine aggregate with steel cord scrap results in lower water absorption and higher compressive strength in the modified concrete specimens. The porosity parameters have also changed: the closed porosity has increased and consequently the freeze-thaw resistance of modified concrete has improved.
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