Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar
The effects of hydroxypropyl methyl cellulose ether, starch ether, bentonite, and redispersion emulsoid powder on the working and mechanical properties of fresh dry-mixed mortar were studied. The results show that hydroxypropyl methyl cellulose ether has the greatest impact on the consistency and wa...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/5978089 |
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| author | Shu-Chun Zhou Heng-Lin Lv Ning Li Jie Zhang |
| author_facet | Shu-Chun Zhou Heng-Lin Lv Ning Li Jie Zhang |
| author_sort | Shu-Chun Zhou |
| collection | DOAJ |
| description | The effects of hydroxypropyl methyl cellulose ether, starch ether, bentonite, and redispersion emulsoid powder on the working and mechanical properties of fresh dry-mixed mortar were studied. The results show that hydroxypropyl methyl cellulose ether has the greatest impact on the consistency and water retention of ordinary dry-mixed mortar and that redispersion emulsoid powder reduces the water action and starch ether has essentially no effect on water retention. It also shows that the time of mortar condensation when mixed with hydroxypropyl methyl cellulose ether is the longest, followed by redispersion emulsoid powder and bentonite. Starch ether can slightly, but not obviously, extend the setting time of cement mortar. Hydroxypropyl methyl cellulose ether has the greatest impact on the mechanical properties of ordinary dry-mixed mortar, followed by redispersion emulsoid powder, starch ether, and bentonite. As the water retention increases, the setting time of the mortar also increases. The use of water as a thickening material has a retarding effect on the mortar, increases the water-retention rate, and increases the retarding effect. Moreover, increasing the content of the chemical admixtures decreases the strength of cement mortar. |
| format | Article |
| id | doaj-art-958665c830de414ebb053412e7b71907 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-958665c830de414ebb053412e7b719072025-02-03T07:25:53ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/59780895978089Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed MortarShu-Chun Zhou0Heng-Lin Lv1Ning Li2Jie Zhang3State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaThe effects of hydroxypropyl methyl cellulose ether, starch ether, bentonite, and redispersion emulsoid powder on the working and mechanical properties of fresh dry-mixed mortar were studied. The results show that hydroxypropyl methyl cellulose ether has the greatest impact on the consistency and water retention of ordinary dry-mixed mortar and that redispersion emulsoid powder reduces the water action and starch ether has essentially no effect on water retention. It also shows that the time of mortar condensation when mixed with hydroxypropyl methyl cellulose ether is the longest, followed by redispersion emulsoid powder and bentonite. Starch ether can slightly, but not obviously, extend the setting time of cement mortar. Hydroxypropyl methyl cellulose ether has the greatest impact on the mechanical properties of ordinary dry-mixed mortar, followed by redispersion emulsoid powder, starch ether, and bentonite. As the water retention increases, the setting time of the mortar also increases. The use of water as a thickening material has a retarding effect on the mortar, increases the water-retention rate, and increases the retarding effect. Moreover, increasing the content of the chemical admixtures decreases the strength of cement mortar.http://dx.doi.org/10.1155/2019/5978089 |
| spellingShingle | Shu-Chun Zhou Heng-Lin Lv Ning Li Jie Zhang Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar Advances in Materials Science and Engineering |
| title | Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar |
| title_full | Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar |
| title_fullStr | Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar |
| title_full_unstemmed | Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar |
| title_short | Effects of Chemical Admixtures on the Working and Mechanical Properties of Ordinary Dry-Mixed Mortar |
| title_sort | effects of chemical admixtures on the working and mechanical properties of ordinary dry mixed mortar |
| url | http://dx.doi.org/10.1155/2019/5978089 |
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