使用盛有水或砂浆的小面积方盘对平板砂浆蒸发速度进行了模拟测定计算,研究了小面积砂浆与平板砂浆蒸发速度之间的关系,得到了其在试件成型90min～6h之间平板砂浆与方盘砂浆蒸发速度的比值随时间变化的线性方程.通过测量小面积方盘砂浆的蒸发速度可以计算出实际平板砂浆的蒸发速度,由此可进一步研究蒸发速度对水泥基材料抗裂指数K的影响.
The square pans filled with pure water or mortars are used to simulate the evaporation rate of mortar in slab and the relationship between them is researched. There exists a linear relationship between ratios of the evaporation rate and time in 90min to 6 h after the specimens are cast. It can be used to calculate the real evaporation rate of mortar in slab and more research can be done to determine the influence of evaporation rate on crack-resisting index K.
参考文献
| [1] | 马一平,朱蓓蓉,谈慕华,周钟鸣.水泥砂浆塑性收缩开裂试验条件的研究[J].建筑材料学报,2002(04):399-404. |
| [2] | 马一平,仇建刚,王培铭,杨全兵,孙振平,蒋正武.聚丙烯纤维对水泥砂浆塑性收缩行为的影响[J].建筑材料学报,2005(05):499-507. |
| [3] | 马一平,王培铭.水泥基材料塑性收缩抗裂判据研究[J].建筑材料学报,2006(05):533-537. |
| [4] | 杨晓杰,马一平,王培铭,张志亮.水泥砂浆塑性收缩开裂的三元本构方程研究[J].建筑材料学报,2009(01):22-26,40. |
| [5] | ASTM C 1579-06-2006.Standard test method for evaluating plastic shrinkage cracking of restrained fiber reinforced concrete(Using a steel form insert)[S]. |
| [6] | 杨长辉,王川,吴芳.水灰比对混凝土塑性收缩裂缝的影响[J].重庆建筑大学学报,2003(02):77-81. |
| [7] | Pietro Lura;Brad Pease;Guy B. Mazzotta;Farshad Rajabipour;Jason Weiss .Influence of Shrinkage-Reducing Admixtures on Development of Plastic Shrinkage Cracks[J].ACI materials journal,2007(2):187-194. |
| [8] | 刘丽芳,王培铭,杨晓杰.砂浆配比对水分蒸发和塑性收缩裂缝的影响[J].建筑材料学报,2006(04):453-458. |
| [9] | Ilker Bekir Topcu;Veysel Baran Elgun .Influence of concrete properties on bleeding and evaporation[J].Cement and Concrete Research,2004(2):275-281. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%