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Evaluation the effect of lime on the plastic and hardened properties of cement mortar and quantified using Vipulanandan model

机译:评价石灰对水泥砂浆塑料和硬化性能的影响,用vipulanandan模型量化

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摘要

In this study, the effect of lime content (L %) on the plastic properties such as water-cement ratio (w/c), setting times, flowability, compressive, flexural and bond strengths of cement mortar were investigated. Based on the information in the literature the amount of lime varied between 0 to 45% (by weight of cement). The experimental results were compared with the data collected from different research studies and quantified using two different models. The plastic and hardened properties of the cement mortar modified with different percentage of lime were conducted according to the ASTM and BS standards. Based on the literature data the water to cement ratio (w/c) ranged between 0.3-0.74 percent, the w/c of 0.5 was selected in this study. The compressive and flexural strengths of cement mortar modified with lime up to 28 days of curing were ranged between 3 MPa to 65 MPa and 2 MPa to 12 MPa respectively. The compressive, flexural and bond strengths of the cement mortar decreased with increasing lime content. Vipulanandan correlation model was used to correlate the relationship between lime with consistency, setting times, flowability and compressive strength of cement mortar. Compressive and flexural strengths of cement mortar modified with lime were quantified very well as a function of w/c, lime content and curing time using nonlinear relationship.
机译:在这项研究中,对塑料的性能如耐水水泥比(W / C),固化时间,流动性,水泥砂浆的抗压,抗弯和粘结强度石灰含量(L%)的影响进行了研究。根据在文献中石灰的量在0至45%变化的信息(按水泥重量计)。实验结果与从不同的研究报告收集和定量数据使用两种不同的模型进行了比较。与石灰的不同百分比改性水泥砂浆的塑料和硬化性能进行了根据ASTM和BS标准进行。基于文献数据的水与水泥之比(W / C)0.3-0.74%之间,0.5 W / C在本研究中被选中。用石灰改性高达固化28天水泥砂浆的抗压强度和抗弯强度分别为3兆帕之间的范围内,以65兆帕和2MPa至12兆帕。水泥砂浆的抗压强度,抗弯强度和粘结强度随石灰含量下降。 Vipulanandan相关性模型被用于关联与一致性石灰之间的关系,设置时间,流动性和水泥砂浆的抗压强度。用石灰改性水泥砂浆的抗压强度和抗弯强度进行定量非常以及W / C,石灰含量和固化时间使用非线性关系的函数。

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