废弃玻璃颗粒细度对混凝土硫酸盐侵蚀性能的影响
|
摘要
为探究掺废弃玻璃颗粒混凝土被硫酸盐侵蚀后的抗侵蚀能力。试验设计了2个水灰比和4个玻璃颗粒掺量,加水搅拌制成试件并养护7…d后放于浓度为5…%、10…%硫酸钠溶液中,侵蚀至规定龄期后测试其抗折强度并计算抗蚀系数,通过抗蚀系数说明不同掺量玻璃混凝土的抗侵蚀能力。试验发现:水灰比为0.35,取代粗砂时混凝土抗侵蚀能力随着玻璃颗粒掺量的增加逐渐降低,取代中砂时混凝土抗侵蚀能力随着玻璃颗粒掺量的增加逐渐提高,取代细砂时混凝土抗侵蚀能力随着玻璃颗粒掺量的增加呈先增后减趋势。水灰比为0.40,取代细砂、中砂、粗砂时混凝土抗侵蚀能力随着玻璃颗粒掺量的增加逐渐降低。综合研究表明,玻璃颗粒细度对混凝土抗侵蚀能力有着不同程度的影响。
To explore the corrosion resistance of concrete mixed with waste glass particles after being corroded by sulfate attack, two water cement ratios and four glass particles content were designed in this experiment. The specimens were made by mixing with water and maintained for7 days in standard curing conditions which are temperature 20±2 and humidity 95 %, then placed in 5 % and 10 % sulfate solution. The rupture strength was tested and the corrosion resistance coefficient was calculated after erosion to fixed age. The corrosion resistance coefficient was used to illustrate the corrosion resistance of the specimens with different contents of glass concrete. The result showed that, when the ratio of water to cement is 0.35, replacing coarse sand, the corrosion resistance of concrete gradually decreases with the increase of glass particle content Replacing medium sand, the corrosion resistance of concrete increases gradually with the increase of glass particle content. Replacing fine sand, the corrosion resistance of concrete increases first and then decreases with the increase of glass particle content. When the water cement ratio is 0.40, replacing fine sand, medium sand and coarse sand, the corrosion resistance of concrete gradually decreases with the increase of glass particle content. The comprehensive study showed that the fineness of glass particles had different degrees of influence on the corrosion resistance of concrete.
To explore the corrosion resistance of concrete mixed with waste glass particles after being corroded by sulfate attack, two water cement ratios and four glass particles content were designed in this experiment. The specimens were made by mixing with water and maintained for7 days in standard curing conditions which are temperature 20±2 and humidity 95 %, then placed in 5 % and 10 % sulfate solution. The rupture strength was tested and the corrosion resistance coefficient was calculated after erosion to fixed age. The corrosion resistance coefficient was used to illustrate the corrosion resistance of the specimens with different contents of glass concrete. The result showed that, when the ratio of water to cement is 0.35, replacing coarse sand, the corrosion resistance of concrete gradually decreases with the increase of glass particle content Replacing medium sand, the corrosion resistance of concrete increases gradually with the increase of glass particle content. Replacing fine sand, the corrosion resistance of concrete increases first and then decreases with the increase of glass particle content. When the water cement ratio is 0.40, replacing fine sand, medium sand and coarse sand, the corrosion resistance of concrete gradually decreases with the increase of glass particle content. The comprehensive study showed that the fineness of glass particles had different degrees of influence on the corrosion resistance of concrete.
引文
[1] Dey V, Bonakda A, Mobashe R B. Lowvelocity flexural impact response of fiber reinforced aerated concrete [J]. Cement and Concrete Composites, 2014, 49 (5): 100-110.
[2] Serpa D, Brito J D, Pontes J. Concrete made with recycled glass aggregates: Mechanical performance [J]. Aci Materials Journal, 2015, 12(1): 29-38.
[3] Yuan Xuelian, Hu Jie. Research and discussion on the application of waste glass in concrete[J].Anhui Architecture, 2016, 23(3): 245-247.
[4] 柯国军,柏纪平,谭大维. 废玻璃用于水泥混凝土的研究进展[J]. 南华大学学报(自然科学版),2010,24(3):96-102.
[5] 刘光焰,金大智,戴昌强,等. 掺玻璃粉混凝土的力学性能[J]. 河南科技大学学报(自然科学版),2018,39(1):59-62.
[6] 倪成林,谭红琳,杨应湘,等. 玻璃粉对混凝土酸侵蚀性能的影响[J]. 河海大学学报(自然科学版),2015, 43(4):341-345.
[7] 柯国军,李如意,宋百姓,等. 废玻璃粉混凝土抗硫酸盐侵蚀实验研究[J]. 混凝土,2017,332(6):72-74.
[8] 刘光焰,李龙娇,樊雷. 废弃玻璃骨料混凝土的力学性能试验研究[J]. 混凝土,2016,316(2):74-76.
[9] 杨凤玲,嵇银行,李玉寿,等. 玻璃骨料粒径对玻璃混凝土性能影响的研究[J]. 混凝土,2012,274(8):78-80.
[10] 杨凤玲,嵇银行,李玉寿,等. 废玻璃细骨料混凝土的试验研究[J]. 混凝土,2011,263(9):81-83.
[11] 吴福飞,侍克斌,董双快,等. 硫酸盐镁盐复合侵蚀混凝土的微观形貌特征[J]. 农业工程学报,2015,31(09):140-146.
[12] 赵祖芳,李碧雄,朱亚阁. 单掺玻璃再生混凝土的最优取代率试验研究[J]. 工程科学与技术,2017,49(02):99-106.
[2] Serpa D, Brito J D, Pontes J. Concrete made with recycled glass aggregates: Mechanical performance [J]. Aci Materials Journal, 2015, 12(1): 29-38.
[3] Yuan Xuelian, Hu Jie. Research and discussion on the application of waste glass in concrete[J].Anhui Architecture, 2016, 23(3): 245-247.
[4] 柯国军,柏纪平,谭大维. 废玻璃用于水泥混凝土的研究进展[J]. 南华大学学报(自然科学版),2010,24(3):96-102.
[5] 刘光焰,金大智,戴昌强,等. 掺玻璃粉混凝土的力学性能[J]. 河南科技大学学报(自然科学版),2018,39(1):59-62.
[6] 倪成林,谭红琳,杨应湘,等. 玻璃粉对混凝土酸侵蚀性能的影响[J]. 河海大学学报(自然科学版),2015, 43(4):341-345.
[7] 柯国军,李如意,宋百姓,等. 废玻璃粉混凝土抗硫酸盐侵蚀实验研究[J]. 混凝土,2017,332(6):72-74.
[8] 刘光焰,李龙娇,樊雷. 废弃玻璃骨料混凝土的力学性能试验研究[J]. 混凝土,2016,316(2):74-76.
[9] 杨凤玲,嵇银行,李玉寿,等. 玻璃骨料粒径对玻璃混凝土性能影响的研究[J]. 混凝土,2012,274(8):78-80.
[10] 杨凤玲,嵇银行,李玉寿,等. 废玻璃细骨料混凝土的试验研究[J]. 混凝土,2011,263(9):81-83.
[11] 吴福飞,侍克斌,董双快,等. 硫酸盐镁盐复合侵蚀混凝土的微观形貌特征[J]. 农业工程学报,2015,31(09):140-146.
[12] 赵祖芳,李碧雄,朱亚阁. 单掺玻璃再生混凝土的最优取代率试验研究[J]. 工程科学与技术,2017,49(02):99-106.