{"title":"预浸渍碳化骨料对全再生混凝土抗碳化性能的影响","authors":"Yahong Ding","doi":"10.13168/cs.2023.0019","DOIUrl":null,"url":null,"abstract":"In order to investigate the effect of treated recycled aggregates by pre-soaking calcium hydroxide (CH) combined with CO 2 curing on the carbonation resistance of fully recycled concrete. The carbonation depth of fully recycled concrete was tested at 3, 7, 14 and 28 days using the rapid carbonation method. The experimental results show that with the recycled aggregate replacement rate rising, the carbonation resistance of fully recycled concrete gradually decreases. CH pretreatment combined with CO 2 curing effectively improves the quality of the recycled aggregate, thereby improving the carbonation resistance of fully recycled concrete. The optimum effect of CO 2 curing on fully recycled concrete is achieved with the recycled fine aggregate replacement rate of 70 % and the recycled coarse aggregate replacement rate of 100 %. In addition, microscopic tests were used to reveal the enhancement mechanism of CH pretreatment combined with CO 2 curing increases the carbonation resistance of fully recycled concrete. Experimental data were used to fit and model the carbonation depth of fully recycled concrete formulated before and after CO 2 curing of recycled aggregates.","PeriodicalId":9857,"journal":{"name":"Ceramics-silikaty","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"EFFECT OF PRE-IMPREGNATED CARBONIZED AGGREGATE ON CARBONIZATION RESISTANCE OF FULLY RECYCLED CONCRETE\",\"authors\":\"Yahong Ding\",\"doi\":\"10.13168/cs.2023.0019\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In order to investigate the effect of treated recycled aggregates by pre-soaking calcium hydroxide (CH) combined with CO 2 curing on the carbonation resistance of fully recycled concrete. The carbonation depth of fully recycled concrete was tested at 3, 7, 14 and 28 days using the rapid carbonation method. The experimental results show that with the recycled aggregate replacement rate rising, the carbonation resistance of fully recycled concrete gradually decreases. CH pretreatment combined with CO 2 curing effectively improves the quality of the recycled aggregate, thereby improving the carbonation resistance of fully recycled concrete. The optimum effect of CO 2 curing on fully recycled concrete is achieved with the recycled fine aggregate replacement rate of 70 % and the recycled coarse aggregate replacement rate of 100 %. In addition, microscopic tests were used to reveal the enhancement mechanism of CH pretreatment combined with CO 2 curing increases the carbonation resistance of fully recycled concrete. Experimental data were used to fit and model the carbonation depth of fully recycled concrete formulated before and after CO 2 curing of recycled aggregates.\",\"PeriodicalId\":9857,\"journal\":{\"name\":\"Ceramics-silikaty\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2023-05-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ceramics-silikaty\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.13168/cs.2023.0019\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics-silikaty","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.13168/cs.2023.0019","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
EFFECT OF PRE-IMPREGNATED CARBONIZED AGGREGATE ON CARBONIZATION RESISTANCE OF FULLY RECYCLED CONCRETE
In order to investigate the effect of treated recycled aggregates by pre-soaking calcium hydroxide (CH) combined with CO 2 curing on the carbonation resistance of fully recycled concrete. The carbonation depth of fully recycled concrete was tested at 3, 7, 14 and 28 days using the rapid carbonation method. The experimental results show that with the recycled aggregate replacement rate rising, the carbonation resistance of fully recycled concrete gradually decreases. CH pretreatment combined with CO 2 curing effectively improves the quality of the recycled aggregate, thereby improving the carbonation resistance of fully recycled concrete. The optimum effect of CO 2 curing on fully recycled concrete is achieved with the recycled fine aggregate replacement rate of 70 % and the recycled coarse aggregate replacement rate of 100 %. In addition, microscopic tests were used to reveal the enhancement mechanism of CH pretreatment combined with CO 2 curing increases the carbonation resistance of fully recycled concrete. Experimental data were used to fit and model the carbonation depth of fully recycled concrete formulated before and after CO 2 curing of recycled aggregates.
期刊介绍:
The journal Ceramics-Silikáty accepts papers concerned with the following ranges of material science:
Chemistry and physics of ceramics and glasses
Theoretical principles of their engineering including computing methods
Advanced technologies in the production of starting materials, glasses and ceramics
Properties and applications of modern materials
Special analytical procedures
Engineering ceramic including composites
Glass and ceramics for electronics and optoelectronics
High temperature superconducting materials
Materials based on cement or other inorganic binders
Materials for biological application
Advanced inorganic glasses with special properties
Fibrous materials Coatings and films based on inorganic non-metallic materials.