Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA
The internal curing technology has been widely applied to high-strength concrete, for it can make the high-strength concrete marked by low shrinkage and durable frost resistance. The key to its extension and application lies in the reasonable mixing amount of internal curing materials. To address th...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2020-12-01
|
| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2020-0048 |
| _version_ | 1818609431287431168 |
|---|---|
| author | Guo Lixia Wang Minghua Zhong Ling Zhang Yanan |
| author_facet | Guo Lixia Wang Minghua Zhong Ling Zhang Yanan |
| author_sort | Guo Lixia |
| collection | DOAJ |
| description | The internal curing technology has been widely applied to high-strength concrete, for it can make the high-strength concrete marked by low shrinkage and durable frost resistance. The key to its extension and application lies in the reasonable mixing amount of internal curing materials. To address this problem, scholars have proposed a method for determining the water demand in internal curing; however, the water release of internal curing materials is difficult to obtain by measurement due to the mixing method. Therefore, this paper proposed a calculation model for the mixing amount of internal curing materials based on the modified MULTIMOORA method (Multi-Objective Optimization on the basis of Ratio Analysis plus full multiplicative form). First, different internal curing materials (super absorbent polymer (SAP), lightweight aggregate (LWA)) and pretreatment methods were selected to calculate their compressive strength, self-shrinkage and frost durability according to a proposed test scheme on the mixing amount of internal curing materials, and in such case, the comprehensive performance evaluation of the above indexes was turned into a multi-attribute decision-making problem. Second, the ordered weighted averaging (OWA) method and the entropy weight method were used to determine the subjective and objective weights of the indexes respectively, to eliminate the impact of outliers in the subjective evaluation values. Finally, the comprehensive performance of each test group was sorted using MULTIMOORA, and based on the sorting results and the calculation model, the mixing amount of internal curing materials was determined. The numerical example application results showed that the mixing amount of SAP curing material calculated based on the model herein was 1.276 kg/m3, and the mixing method adopted the pre-water absorption method with the total water-binder ratio unchanged. The numerical example evaluation results were in good agreement with the test results. The internal curing effect of SAP was better than that of LWA, and reached the best when the mixing amount was calculated at 25 times the water release rate and the requirement for the maximum total water diversion was met. The study may provide new ideas for extension and application of the internal curing technology. |
| first_indexed | 2024-12-16T14:58:26Z |
| format | Article |
| id | doaj.art-3272709c274b4e7a99281dabbb5564bf |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-16T14:58:26Z |
| publishDate | 2020-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-3272709c274b4e7a99281dabbb5564bf2022-12-21T22:27:20ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592020-12-0127145546310.1515/secm-2020-0048secm-2020-0048Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORAGuo Lixia0Wang Minghua1Zhong Ling2Zhang Yanan3North China University of Water Resources and Electric Power, Zhengzhou450045, ChinaNorth China University of Water Resources and Electric Power, Zhengzhou450045, ChinaNorth China University of Water Resources and Electric Power, Zhengzhou450045, ChinaNorth China University of Water Resources and Electric Power, Zhengzhou450045, ChinaThe internal curing technology has been widely applied to high-strength concrete, for it can make the high-strength concrete marked by low shrinkage and durable frost resistance. The key to its extension and application lies in the reasonable mixing amount of internal curing materials. To address this problem, scholars have proposed a method for determining the water demand in internal curing; however, the water release of internal curing materials is difficult to obtain by measurement due to the mixing method. Therefore, this paper proposed a calculation model for the mixing amount of internal curing materials based on the modified MULTIMOORA method (Multi-Objective Optimization on the basis of Ratio Analysis plus full multiplicative form). First, different internal curing materials (super absorbent polymer (SAP), lightweight aggregate (LWA)) and pretreatment methods were selected to calculate their compressive strength, self-shrinkage and frost durability according to a proposed test scheme on the mixing amount of internal curing materials, and in such case, the comprehensive performance evaluation of the above indexes was turned into a multi-attribute decision-making problem. Second, the ordered weighted averaging (OWA) method and the entropy weight method were used to determine the subjective and objective weights of the indexes respectively, to eliminate the impact of outliers in the subjective evaluation values. Finally, the comprehensive performance of each test group was sorted using MULTIMOORA, and based on the sorting results and the calculation model, the mixing amount of internal curing materials was determined. The numerical example application results showed that the mixing amount of SAP curing material calculated based on the model herein was 1.276 kg/m3, and the mixing method adopted the pre-water absorption method with the total water-binder ratio unchanged. The numerical example evaluation results were in good agreement with the test results. The internal curing effect of SAP was better than that of LWA, and reached the best when the mixing amount was calculated at 25 times the water release rate and the requirement for the maximum total water diversion was met. The study may provide new ideas for extension and application of the internal curing technology.https://doi.org/10.1515/secm-2020-0048high-strength concreteinternal curingcompressive strengthindex weightmixing amount calculation model |
| spellingShingle | Guo Lixia Wang Minghua Zhong Ling Zhang Yanan Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA Science and Engineering of Composite Materials high-strength concrete internal curing compressive strength index weight mixing amount calculation model |
| title | Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA |
| title_full | Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA |
| title_fullStr | Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA |
| title_full_unstemmed | Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA |
| title_short | Calculation Model for the Mixing Amount of Internal Curing Materials in High-strength Concrete based on Modified MULTIMOORA |
| title_sort | calculation model for the mixing amount of internal curing materials in high strength concrete based on modified multimoora |
| topic | high-strength concrete internal curing compressive strength index weight mixing amount calculation model |
| url | https://doi.org/10.1515/secm-2020-0048 |
| work_keys_str_mv | AT guolixia calculationmodelforthemixingamountofinternalcuringmaterialsinhighstrengthconcretebasedonmodifiedmultimoora AT wangminghua calculationmodelforthemixingamountofinternalcuringmaterialsinhighstrengthconcretebasedonmodifiedmultimoora AT zhongling calculationmodelforthemixingamountofinternalcuringmaterialsinhighstrengthconcretebasedonmodifiedmultimoora AT zhangyanan calculationmodelforthemixingamountofinternalcuringmaterialsinhighstrengthconcretebasedonmodifiedmultimoora |