Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar
The purpose of this study is to use aeolian sand obtained from Inner Mongolia to partially replace quartz sand as fine aggregate to prepare 3D printed mortar to solve the scarcity problems of quartz sand resources in northwestern China. The mechanical properties tests (including flexural strength, c...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523005120 |
| _version_ | 1797454650055589888 |
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| author | Hao Wang Minghui Jiang Meiyan Hang Gangming Zhou Mengjie Sun Xiangju Liu |
| author_facet | Hao Wang Minghui Jiang Meiyan Hang Gangming Zhou Mengjie Sun Xiangju Liu |
| author_sort | Hao Wang |
| collection | DOAJ |
| description | The purpose of this study is to use aeolian sand obtained from Inner Mongolia to partially replace quartz sand as fine aggregate to prepare 3D printed mortar to solve the scarcity problems of quartz sand resources in northwestern China. The mechanical properties tests (including flexural strength, compressive strength, tensile bond strength and axial compression tests) and frost resistance tests of cast specimens and printed mortar specimens in the X, Y and Z directions (abbreviated as CS, PS-X, PS-Y and PS-Z) were investigated. Furthermore, their microscopic morphology and pore structure parameters were compared and analyzed using scanning electron microscopy (SEM) and low field nuclear magnetic resonance (NMR), respectively. The results showed that the flexural strength and compressive strength of the samples following the inclined cross-path were superior to those following the Z-shaped path specimens. The tensile bonding strength of the CS, PS-X, PS-Y and PS-Z exhibited that F3 > F3X > F3Z > F3Y, and the peak stress was observed as F4X > F4 > F4Z > F4Y. This was attributed to the cement hydration of CS and PS-X being more sufficient than those of PS-Y and PS-Z. Furthermore, freezing-thawing cycles accelerated the degradation of aeolian sand 3D printed mortar specimens, increased their weight loss rate and porosities, as well as reduced relative dynamic modulus of elasticity. The porosities of specimens were as follows: PS-Y > PS-Z > PS-X > CS, and the porosity of PS-Y was 97.62 %, 36.07 % and 10.67 % higher than those of CS, PS-X and PS-Z, respectively. The significance of this research is to provide technical guidance and basis for the application of aeolian sand in 3D printed mortar in the future. |
| first_indexed | 2024-03-09T15:40:08Z |
| format | Article |
| id | doaj.art-b416e26be40942edbc6a71c5d6b551a3 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:40:08Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-b416e26be40942edbc6a71c5d6b551a32023-11-25T04:48:20ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02332Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortarHao Wang0Minghui Jiang1Meiyan Hang2Gangming Zhou3Mengjie Sun4Xiangju Liu5School of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, ChinaFaculty of Materials and Manufacturing, Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100124, China; Corresponding author.School of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, ChinaBeijing Railway Science Shougang Rail Technology Co., Ltd, Changping district, Beijing 102206, ChinaSchool of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, ChinaKey Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, ChinaThe purpose of this study is to use aeolian sand obtained from Inner Mongolia to partially replace quartz sand as fine aggregate to prepare 3D printed mortar to solve the scarcity problems of quartz sand resources in northwestern China. The mechanical properties tests (including flexural strength, compressive strength, tensile bond strength and axial compression tests) and frost resistance tests of cast specimens and printed mortar specimens in the X, Y and Z directions (abbreviated as CS, PS-X, PS-Y and PS-Z) were investigated. Furthermore, their microscopic morphology and pore structure parameters were compared and analyzed using scanning electron microscopy (SEM) and low field nuclear magnetic resonance (NMR), respectively. The results showed that the flexural strength and compressive strength of the samples following the inclined cross-path were superior to those following the Z-shaped path specimens. The tensile bonding strength of the CS, PS-X, PS-Y and PS-Z exhibited that F3 > F3X > F3Z > F3Y, and the peak stress was observed as F4X > F4 > F4Z > F4Y. This was attributed to the cement hydration of CS and PS-X being more sufficient than those of PS-Y and PS-Z. Furthermore, freezing-thawing cycles accelerated the degradation of aeolian sand 3D printed mortar specimens, increased their weight loss rate and porosities, as well as reduced relative dynamic modulus of elasticity. The porosities of specimens were as follows: PS-Y > PS-Z > PS-X > CS, and the porosity of PS-Y was 97.62 %, 36.07 % and 10.67 % higher than those of CS, PS-X and PS-Z, respectively. The significance of this research is to provide technical guidance and basis for the application of aeolian sand in 3D printed mortar in the future.http://www.sciencedirect.com/science/article/pii/S2214509523005120Aeolian sand3D printed mortarMechanical propertiesFrost resistanceFreezing-thawing damage mechanism |
| spellingShingle | Hao Wang Minghui Jiang Meiyan Hang Gangming Zhou Mengjie Sun Xiangju Liu Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar Case Studies in Construction Materials Aeolian sand 3D printed mortar Mechanical properties Frost resistance Freezing-thawing damage mechanism |
| title | Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar |
| title_full | Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar |
| title_fullStr | Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar |
| title_full_unstemmed | Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar |
| title_short | Research on the mechanical properties and frost resistance of aeolian sand 3D printed mortar |
| title_sort | research on the mechanical properties and frost resistance of aeolian sand 3d printed mortar |
| topic | Aeolian sand 3D printed mortar Mechanical properties Frost resistance Freezing-thawing damage mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523005120 |
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