胶凝砂砾石材料抗压强度影响因素及规律研究.pdfVIP

学兔兔 2013年 第 3期 (总 第 281期 ) 混 凝 土 原材料及辅助物料 Number 3 in 2013(Total No．281) Concrete MATERIAI，AND ADMINICLE doi：10．3969~．issn．1002—3550．2013．03．021 胶凝砂砾石材料抗压强度影响因素及规律研究 刘录录，何建新，刘 亮，杨力行 (新疆农业大学 水利与土木工程学院，新疆 乌鲁木齐 830052) 摘 要： 以胶凝用量、细料含量、水胶比作为胶凝砂砾石材料抗压强度的影响因素，通过正交试验设计配合比，采用极差法和投 影寻踪回归分析(PPR)两种方法分析试验结果，得到了影响胶凝砂石材料抗压强度影响因素的主次顺序为胶凝用量、水胶比、细 料含量；胶凝砂砾石材料的抗压强度在各因素不同水平下的变化规律，即抗压强度随胶凝用量的增加而增大，最佳水胶比为1．2， 细料含量在25％～30％之间时抗压强度达到最大，当水胶比和细料含量继续变大时，抗压强度有所降低。 关键词： 胶凝砂砾石；抗压强度；胶凝用量；水胶比；细料含量 中图分类号： TU528．041 文献标志码：A 文章编号： 1002—3550(2013)03—0077—04 Study on influencing factors of compressive strength of gel sandy gravel materials and law L／ULu—lu，HE Jian-xin，LIULiang，YANG Li-xing (College ofWaterConservancyandCivilEngineering，XinjiangAgricuturalUniversity，Urumqi 830052，China) Abstract： Gelling the amount of the fines content，water glue than the compressive strength of sand and gravel as a gelling material impactfactors，mixingratiobyorthogonal experimentaldesign，the rangeanalysisandprojectionpursuitregression(PPR)weretwowaysto analyzethetest results，the orderwas affectedgelling compressive strength ofthe sandandgravelmaterialimpactfactors gelling amount of a water—cement ratio，the fines content．The variation of the compressive strength of the gelling sand and gravel materials in the different levels ofeachfactor，thatthe compressive strengthincreasedwithincreasing gellingamount ofoptimumwater—cement ratio of1．2thefines content reached the maximum compressive strength ofbetween 25％to 30％，when the water—cement ratio and the fines content continue to change was large，the compressive strength decreased．