长江科学院院报2016，Vol.33Issue(9)：143-148,6.DOI:10.11988/ckyyb.20150501
水灰比和偏高岭土掺量对硫铝酸盐水泥基材料性能的影响
Effects of Water-cement Ratio and Metakaolin Blending Ratio on the Performance of Sulphoaluminate Cement-based Material
摘要
Abstract
To study the influences of water-cement ratio and metakaolin blending ratio on the fluidity,shrinkage and mechanical properties of sulphoaluminate cement,we take Longmen Grottoes as an example,and carry out tests on fluidity,mechanical properties and dry shrinkage property.The results show that,firstly,the initial fluidity of sul-phoaluminate cement is proportional to water-cement ratio and metakaolin blending ratio;secondly,the higher wa-ter-cement ratio is,the lower microexpansion rate is,even with a little contraction.In general ,expansion rate in-creases with metakaolin blending ratio;compressive strength is inversely proportional to water-cement ratio and metakaolin blending ratio;the flexural strength of specimens cured for 7 days decreases with the increasing metaka-olin blending ratio,while the flexural strength of specimens cured for 28 days is on the contrary;flexural strength decreases with the increasing water-cement ratio,and the decline rate is relatively large;bonding strength increases first and then decreases with the increasing water-cement ratio;while with increasing metakaolin blending ratio, bonding strength increases overall,and in particular,peak value occurs under water-cement ratio of 0.5.The ex-perimental results provide theoretical basis for the field grouting test in Longmen Grottoes,and also provide refer-ence for grouting repair in similar stone cultural relics.关键词
硫铝酸盐水泥/水灰比/偏高岭土掺量/流动度/力学性能Key words
sulphoaluminate cement/water-cement ratio/metakaolin blending ratio/fluidity/mechanical proper-ties分类
建筑与水利引用本文复制引用
何凯,严绍军,赵莽,窦彦,翟国林..水灰比和偏高岭土掺量对硫铝酸盐水泥基材料性能的影响[J].长江科学院院报,2016,33(9):143-148,6.基金项目
国家文物局项目 （）
