深圳大学学报理工版

在环氧树脂微胶囊的制备实验基础上,制备水泥自修复复合材料,研究养护龄期和微胶囊掺量对水泥自修复复合材料微观结构的影响,采用多种测试仪器对复合材料孔结构特性、电性能、抗渗透性能和水化热进行了分析. 结果表明,随着养护龄期的增加,复合材料电阻值显著增大,而累积孔体积和吸水性系数减小; 随着微胶囊掺量的增加,电阻值增大,而累积孔体积、吸附量与脱附量、吸水性系数以及水化放热速率与放热量减小.

Self-healing cementitious composites were prepared based on the preparation methods for epoxy microcapsules. The impacts of the curing age and the microcapsule content on microcosmic structure for the self-healing cementitious composites were studied. The pore structure and distribution, the electrical property, the penetration resistance and the hydration heat of composites were analyzed by various instruments. The results show a significant increase in resistance and decreases in cumulative pore volume and coefficient of water absorption with the increase of curing age. When increasing the microcapsule content, we find an increase in resistance as well as decreases in absorption and desorption, the cumulative pore volume, the coefficient of water absorption, the hydration exothermic rate and the hydration heat.

引言
1 材料及方法
2 结果与讨论
3 结语

图1 养护龄期对水泥自修复复合材料累积孔体积的影响<br/>Fig.1 Influence of curing ages on the cumulative pore volume for the self-healing cementitious composites

图1 养护龄期对水泥自修复复合材料累积孔体积的影响
Fig.1 Influence of curing ages on the cumulative pore volume for the self-healing cementitious composites

图2 养护龄期对水泥自修复复合材料孔径分布的影响<br/>Fig.2 Influence of curing ages on the pore size distribution for the self-healing cementitious composites

图2 养护龄期对水泥自修复复合材料孔径分布的影响
Fig.2 Influence of curing ages on the pore size distribution for the self-healing cementitious composites

$图3 微胶囊的质量分数对水泥自修复复合材料累积孔体积的影响 Fig.3 Influence of mass fraction of microcapsule on the cumulative pore volume for the self-healing cementitious composites$

图3 微胶囊的质量分数对水泥自修复复合材料累积孔体积的影响
Fig.3 Influence of mass fraction of microcapsule on the cumulative pore volume for the self-healing cementitious composites

$图4 微胶囊的质量分数对水泥自修复复合材料的吸附与脱附的影响 Fig.4 Influence of mass fraction of microcapsule on the adsorption and the desorption for the self-healing cementitious composites$

图4 微胶囊的质量分数对水泥自修复复合材料的吸附与脱附的影响
Fig.4 Influence of mass fraction of microcapsule on the adsorption and the desorption for the self-healing cementitious composites

图5 养护龄期对水泥自修复复合材料Nyquist谱图的影响<br/>Fig.5 Influence of curing ages on the Nyquist spectrum for the self-healing cementitious composites

图5 养护龄期对水泥自修复复合材料Nyquist谱图的影响
Fig.5 Influence of curing ages on the Nyquist spectrum for the self-healing cementitious composites

$图6 微胶囊的质量分数对水泥自修复复合材料Nyquist谱图的影响 Fig.6 Influence of mass fraction of microcapsule on the Nyquist spectrum for the self-healing cementitious composites$

图6 微胶囊的质量分数对水泥自修复复合材料Nyquist谱图的影响
Fig.6 Influence of mass fraction of microcapsule on the Nyquist spectrum for the self-healing cementitious composites

$表1 水泥自修复复合材料吸水量与养护龄期的关系(微胶囊的质量分数为4%) Table 1 Relationship between curing ages and water absorption for the self-healing cementitious composites(mass fraction of microcapsule is 4%)$

表1 水泥自修复复合材料吸水量与养护龄期的关系(微胶囊的质量分数为4%)
Table 1 Relationship between curing ages and water absorption for the self-healing cementitious composites(mass fraction of microcapsule is 4%)

图7 水泥自修复复合材料吸水性系数与养护龄期的关系<br/>Fig.7 Relationship between curing ages and water absorption coefficients for the self-healing cementitious composites

图7 水泥自修复复合材料吸水性系数与养护龄期的关系
Fig.7 Relationship between curing ages and water absorption coefficients for the self-healing cementitious composites

$图8 水泥自修复复合材料吸水性系数与掺入微胶囊质量分数的关系 Fig.8 Relationship between water absorption coefficients and mass fraction of microcapsule for the self-healing cementitious composites$

图8 水泥自修复复合材料吸水性系数与掺入微胶囊质量分数的关系
Fig.8 Relationship between water absorption coefficients and mass fraction of microcapsule for the self-healing cementitious composites

$图9 水泥自修复复合材料水化放热速率与掺入微胶囊的质量分数的关系 Fig.9 Relationship between hydration exothermic rates and mass fraction of microcapsule for the self-healing cementitious composites$

图9 水泥自修复复合材料水化放热速率与掺入微胶囊的质量分数的关系
Fig.9 Relationship between hydration exothermic rates and mass fraction of microcapsule for the self-healing cementitious composites

$图10 水泥自修复复合材料水化放热量与掺入微胶囊的质量分数的关系 Fig.10 Relationship between hydration hea and mass fraction of microcapsule for the self-healing cementitious composites$

图10 水泥自修复复合材料水化放热量与掺入微胶囊的质量分数的关系
Fig.10 Relationship between hydration hea and mass fraction of microcapsule for the self-healing cementitious composites

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备注

引言

1 材料及方法

2 结果与讨论

3 结语

期刊信息

备注

引言

1 材料及方法

2 结果与讨论

3 结 语

期刊信息

3 结语