废玻璃掺合料对混凝土力学性能的影响
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摘要
为了研究废玻璃掺合料对混凝土各项力学性能的影响,对不同玻璃粉粒径(150～830μm、75～150μm、25～75μm)和不同体积掺量(5%、10%、15%、20%)的废玻璃掺合料混凝土进行了抗压强度、劈裂抗拉强度和静弹性模量性能测试,分析了废玻璃粉粒径和体积掺量对混凝土力学性能的影响,同时研究了废玻璃粉掺合料混凝土的拉压比和弹强比。结果表明:废玻璃粉掺合料对混凝土力学性能影响较大,当玻璃粉掺量≥10%时,混凝土的抗压强度均有不同程度的提高,玻璃粉粒径越细,混凝土的抗压强度越高。随着废玻璃粉掺量增加,混凝土劈裂抗拉强度持续降低,拉压比减小。混凝土弹性模量随着玻璃粉的掺入均出现不同程度的增大,且玻璃粉粒径越小,弹性模量越大,弹强比随玻璃粉掺量先增大后减小。
In order to study the influence of waste glass admixture on the mechanical properties of concrete, the compressive strength, splitting tensile strength and static elastic modulus of waste glass admixture concrete with different glass powder size(150～830 μm、75～150 μm、150～830 μm) and different volume content(5%, 10%, 15%, 20%) were tested. The influence of particle size and volume content of waste glass powder on the mechanical properties of concrete was analyzed, and the tension-compression ratio and elastic strength ratio of concrete were also studied. The results show that the waste glass admixture has great influence on the mechanical properties of concrete, when the content of glass powder is more than 10%, the compressive strength of concrete increases. And the finer the size of glass powder, the higher the compressive strength of concrete. With the increase of waste glass powder content, the splitting tensile strength and the tension-compression ratio of concrete decrease continuously. The elastic modulus of concrete increases in varying degrees with the addition of glass powder, and the smaller the particle size of glass powder, the larger the elastic modulus of the concrete. The elastic strength ratio first increases and then decreases with the addition of glass powder.
In order to study the influence of waste glass admixture on the mechanical properties of concrete, the compressive strength, splitting tensile strength and static elastic modulus of waste glass admixture concrete with different glass powder size(150～830 μm、75～150 μm、150～830 μm) and different volume content(5%, 10%, 15%, 20%) were tested. The influence of particle size and volume content of waste glass powder on the mechanical properties of concrete was analyzed, and the tension-compression ratio and elastic strength ratio of concrete were also studied. The results show that the waste glass admixture has great influence on the mechanical properties of concrete, when the content of glass powder is more than 10%, the compressive strength of concrete increases. And the finer the size of glass powder, the higher the compressive strength of concrete. With the increase of waste glass powder content, the splitting tensile strength and the tension-compression ratio of concrete decrease continuously. The elastic modulus of concrete increases in varying degrees with the addition of glass powder, and the smaller the particle size of glass powder, the larger the elastic modulus of the concrete. The elastic strength ratio first increases and then decreases with the addition of glass powder.
引文
[1]中华人民共和国建设部.GB/T 50081-2002普通混凝土拌合物性能试验方法标准[S].北京:中国建筑工业出版社,2016.
[2]邓攀,陆启宏,柯国军,等.不同粒径及掺量废玻璃粉对混凝土抗碳化性能的影响[J].混凝土与水泥制品,2018(4):95-98.
[3]赵祖芳,李碧雄,朱亚阁.单掺废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(S2):102-109.
[4]曾超,甘元初,柯国军,等.废玻璃粉混凝土力学性能试验研究[J].硅酸盐通报,2014,33(2):377-381.
[5]李丽华,任增乐,杨俊超,等.废弃玻璃粉在混凝土中的应用机理及ASR风险[J].长江科学院院报,2016,33(2):94-99.
[6]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(1):59-62.
[7]王海娟,张义顺,赵继芬,等.利用废旧玻璃粉细掺料制备混凝土实验研究[J].河南理工大学学报:自然科学版,2012,31(5):608-612.
[8]罗锟,梁炯丰,邓宇.再生玻璃粗骨料混凝土基本力学性能研究[J].科学技术与工程,2013,25(13):7585-7587.
[9]严建华,柏晓强,崔素萍,等.废弃玻璃在混凝土中的应用研究进展[J].硅酸盐通报,2017,36(4):1228-1233.
[2]邓攀,陆启宏,柯国军,等.不同粒径及掺量废玻璃粉对混凝土抗碳化性能的影响[J].混凝土与水泥制品,2018(4):95-98.
[3]赵祖芳,李碧雄,朱亚阁.单掺废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(S2):102-109.
[4]曾超,甘元初,柯国军,等.废玻璃粉混凝土力学性能试验研究[J].硅酸盐通报,2014,33(2):377-381.
[5]李丽华,任增乐,杨俊超,等.废弃玻璃粉在混凝土中的应用机理及ASR风险[J].长江科学院院报,2016,33(2):94-99.
[6]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(1):59-62.
[7]王海娟,张义顺,赵继芬,等.利用废旧玻璃粉细掺料制备混凝土实验研究[J].河南理工大学学报:自然科学版,2012,31(5):608-612.
[8]罗锟,梁炯丰,邓宇.再生玻璃粗骨料混凝土基本力学性能研究[J].科学技术与工程,2013,25(13):7585-7587.
[9]严建华,柏晓强,崔素萍,等.废弃玻璃在混凝土中的应用研究进展[J].硅酸盐通报,2017,36(4):1228-1233.