Effect of polyacrylamide on the different properties of cement and mortar
Effect of polyacrylamide on the different properties of cement and mortar
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DOI：
10.1016/j.msea.2004.08.050
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发表时间：
2005-02
期刊：
影响因子：
6.4
通讯作者：
U. S. Rai;R. K. Singh
中科院分区：
文献类型：
--
作者：
U. S. Rai;R. K. Singh
研究了聚丙烯酰胺（PAA）在普通水泥和砂浆中掺入量为水泥质量的0.5-5.0%时，对凝结时间、水化热、抗压强度和抗拉强度等性能的影响。硬度采用维氏压痕法测定，胶凝粘结的断裂韧性和抗弯强度采用三点弯曲系统测定。用0.1和1.0N的HCl和H2SO 4以及海水测试所得产物的耐腐蚀性。采用FT-IR和X-射线衍射技术测定了材料的相组成。聚合物相散布在水泥中，导致吸水性降低，并且其与水合水泥的相互作用导致额外的粘结形成，从而导致强度增加。
The effect of polyacrylamide (PAA) addition in the ordinary cement and mortar, on the properties, such as setting time, heat of hydration, compressive and tensile strength has been studied by adding 0.5–5.0% additive by weight of cement. While hardness was determined using the Vickers indentation method, the fracture toughness of cementitious bond and flexural strength have been determined using three point bending system. Corrosion resistance of resulting products was tested against each of 0.1 and 1.0N of HCl and H2SO4and seawater. FT-IR and X-ray diffraction techniques have been employed to determine the phase compositions of the material. Polymeric phase is interspersed in cement causing decrease in water absorption and also its interaction with hydrating cement resulting additional bond formation leading to the increase in strength.