摘要
为了研究不同影响因素对锂渣混凝土抗压强度的影响,本文以水胶比、锂渣掺量和锂渣细度为考察因素,设计正交试验;通过极差和方差分析法分析各因素对锂渣混凝土抗压强度的影响大小,并进一步分析水胶比和锂渣掺量对锂渣混凝土抗压强度的影响规律。结果表明:水胶比是影响锂渣混凝土抗压强度的主要因素,其次是锂渣掺量,最次是锂渣细度;随着龄期的增长,锂渣掺量的影响逐渐显著,锂渣细度的影响逐渐消失。锂渣混凝土前期的抗压强度低于普通混凝土或与其相当,其28 d和60 d抗压强度均大于普通混凝土。锂渣混凝土抗压强度随着锂渣掺量的增加而先增大后减小,锂渣的最佳掺量为20%。当水胶比分别为0.466、0.404(0.466)和0.530时,锂渣掺量为10%、20%和30%的混凝土抗压强度增长率为最大。
In order to study the influence of different factors on the compressive strength of lithium slag concrete,the orthogonal experiment is designed,and the water binder ratio,the content of lithium slag and the fineness of lithium slag as the research factors are investigated. The influence of various factors on the compressive strength of lithium slag concrete was analyzed by range and variance analysis method.And the influence law of water binder ratio and lithium slag content on compressive strength of lithium slag concrete was analyzed. The results showed that the water binder ratio was the main factor affecting the compressive strength of the lithium slag concrete,followed by the lithium slag content,the second is the fineness of the lithium slag. With the growth of the age,the influence of the content of the lithium slag is gradually increasing,and the influence of the fineness of the lithium slag gradually disappeared.The compressive strength of lithium slag concrete is lower or equals to that of ordinary concrete at the early stage,and the compressive strength of 28 d and 60 d is greater than that of ordinary concrete. With the increase of the content of lithium slag,the compressive strength of the lithium slag concrete increases first and then decreases,and the best content of lithium slag is 20%. When the water cement ratio was0. 466,0. 404(0. 466) and 0. 530,the growth rate of the compressive strength of the concrete with thecontent of 30%,20% and 10% was the maximum.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2016年第10期3373-3380,共8页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金项目(51468017
51378206)
江西省自然基金项目(20133BCB24008
20143ACB20008)
关键词
水胶比
锂渣掺量和细度
锂渣混凝土
抗压强度
影响规律
water binder ratio
lithium slag content and fineness
lithium slag concrete
compressive strength
influence law
