掺合料对水泥路面裂缝修补料扩展度的影响

发布时间：2018-05-28 21:18

本文选题：水泥路面 + 水泥基裂缝修补料　；参考：《广西大学学报(自然科学版)》2014年01期

【摘要】：针对水泥基修补料易产生扩展度损失等问题,研究了粉煤灰、矿渣粉、熟石灰和石英粉等掺合料掺量对水泥基修补料30 min扩展度损失的影响;采用扩展度和扫描电子显微镜(SEM)试验,分析影响规律和机理。结果表明,粉煤灰、矿渣粉、熟石灰等量取代水泥后,修补料的初始扩展度相对净浆都是增大的,最大增幅分别可达到25.9%、29.7%、22.8%,30 min扩展度保留值相对净浆也是增大的,最大增幅分别为31.5%、30.8%、23.9%;而用石英粉等量取代水泥时,初始扩展度相对同等条件下的净浆是提高的,粉胶比为0.2时达到最大增幅28.9%,但是此时修补料的30 min扩展度小于同等条件下净浆的扩展度0.9%,随着粉胶比的进一步加大,此比例逐渐增大,最大达24.8%。因此采用合适的掺量时用掺加掺合料的方法来提高修补料的扩展度是可行的。
[Abstract]:The effect of fly ash, slag powder, lime and quartz powder on the expansion loss of cement based mending material 30 min was studied, and the influence rules and mechanism were analyzed by the expansion degree and scanning electron microscope (SEM) test. The results showed that fly ash, slag powder and lime. After the same amount of cement is replaced, the initial expansion of the mending material is increased relative to the net pulp, the maximum increase can reach 25.9%, 29.7%, 22.8%, and 30 min extension retention value is also increased relative to the net pulp, and the maximum increase is 31.5%, 30.8%, 23.9%, while the initial expansion is relative to the same condition when the cement is replaced with the same amount of quartz powder. When the ratio of powder to powder is 0.2, the maximum increase is 28.9%, but the expansion degree of the 30 min of the mending material is less than 0.9% under the same condition. With the further increase of the ratio of the powder to the powder, the proportion increases gradually and reaches the maximum of 24.8%., so the extension degree of the repair material is improved by adding the admixture when the suitable dosage is used. Yes.
【作者单位】：长安大学材料科学与工程学院;西安建筑科技大学材料与矿资学院;
【基金】：国家自然科学基金资助项目(50908021,51210105015) 国家西部交通建设科技项目(20113188121720) 陕西省教育厅自然科学专项项目(2013JK0923) 陕西省自然科学基金资助项目(2013JQ6011)
【分类号】：U418.6

【共引文献】