Basic Research of Improving the Mortar Flow by Thermal Stimulation to Superplasticizer
Basic Research of Improving the Mortar Flow by Thermal Stimulation to Superplasticizer
复制标题
高效减水剂热刺激改善砂浆流动性的基础研究
DOI：
10.1051/matecconf/201927801003
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发表时间：
2019
影响因子：
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通讯作者：
S. Date
中科院分区：
文献类型：
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作者：
M. Takigawa;Fraidoon Rahmanzai;R. Kita;S. Date
聚羧酸系高效减水剂广泛应用于混凝土工程的各个领域，但其基本性能受温度波动影响的研究报道较少。本研究将高效减水剂本身的热刺激称为“热刺激”，研究了高效减水剂对新拌砂浆的热刺激和保温效果，以及热刺激对高效减水剂分子结构变化的影响。结果表明，在高温、长时间加热的条件下，高效减水剂的热刺激作用可以改善砂浆的流动性。此外，还发现这种现象是由于热刺激引起的分子结构的变化，并揭示了热刺激的效果因聚合物的类型而异。
Polycarboxylic acid-based superplasticizers are being used for various fields of concrete work, however little has reported on changing basic performance by thermal fluctuation. In this study, heating superplasticizers itself is hereinafter as referred to as “thermal stimulation”, the effect of thermal stimulation and heat retention of superplasticizer on the fresh mortar, moreover the influence of molecular structural changed of superplasticizer by thermal stimulation were investigated. As the result, it was confirmed that improving fluidity of the mortar flow on this condition the highly heat temperature and heat over a long time by thermal stimulation of superplasticizer. In addition, it turned out that this phenomenon was caused molecular structural changed by thermal stimulation, and the result was revealed that the effect of thermal stimulation varies according to the type of polymer.