| 摘要: |
| 用粒径1.18~5.00mm，600μm~1.18mm，300~600μm和＜300μm这4种废玻璃分别取代（质量分数）30%，60%，100%天然砂配制砂浆，测试砂浆在20，300，400，600，800，900℃的抗压强度和劈裂抗拉强度.结果表明：在常温下，用粒径≥300μm废玻璃取代天然砂后，砂浆强度低于基准砂浆，且随废玻璃取代率增大而降低；用粒径＜300μm的废玻璃取代部分天然砂后，砂浆劈裂抗拉强度略大于基准砂浆，抗压强度则大大高于基准砂浆；所有配合比砂浆强度均随着加热温度的提高不断降低，强度与加热温度间呈良好的线性关系，相关系数大多＞0.980；用粒径＜300μm废玻璃取代60%以上天然砂，高温益化系数＞1.25，可显著提高砂浆的高温性能. |
| 关键词: 废玻璃 粒径 砂浆 高温 益化作用 |
| DOI：10.3969/j.issn.1007 9629.2013.02.028 |
| 分类号: |
| 基金项目: |
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| Effect of Waste Glass Particle Size on High Temperature Properties of Mortar |
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KE Guo jun1, BAI Ji ping2, SONG Bai xing1
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1.School of Urban Construction, University of South China, Hengyang 421001, China;2.Faculty of Advanced Technology, University of Glamorgan, Pontypridd CF37 1 DL, UK
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| Abstract: |
| Mortar was made with 1.185.00mm，600μm1.18mm，300600μm and ＜300μm waste glass replacement of natural sand at levels（by mass） of 30%, 60% and 100%. Mortar specimens were tested for their compressive strength and splitting tension strength at 20，300，400，600，800 and 900℃. The experimental results show that the mortar which was made with ≥300μm waste glass replacement of natural sand, its strengths at room temperature are lower than control mortars and decrease with increase of temperature. The mortar which was made with＜300μm waste glass replacement of natural sand, its splitting tension strength is slightly higher than control mortars and compressive strength is greatly higher control mortars at room temperature. It was found that mortar strength of all mixes reduces with elevation of temperature, a good linear relationship between strength and heating temperature is present, most of the correlation coefficients are greater than 0.980.The waste glass for particle size ＜300μm and replacement rate of more than 60% can get more than 1.25 high temperature enhancement coefficient and can significantly improve high temperature performance of mortar. |
| Key words: waste glass particle size mortar high temperature enhancement effect |
