含再生骨料的高钙与低钙粉煤灰复合地质聚合物砂浆的性能

Properties of high-calcium and low-calcium fly ash combination geopolymer mortar containing recycled aggregate.

作者信息

Nuaklong Peem, Wongsa Ampol, Sata Vanchai, Boonserm Kornkanok, Sanjayan Jay, Chindaprasirt Prinya

机构信息

Sustainable Infrastructure Research and Development Center, Department of Civil Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen, 40002, Thailand.

Department of Applied Chemistry, Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan, Nakhon Ratchasima, 30000, Thailand.

出版信息

Heliyon. 2019 Sep 30;5(9):e02513. doi: 10.1016/j.heliyon.2019.e02513. eCollection 2019 Sep.

DOI:10.1016/j.heliyon.2019.e02513

PMID:31687601

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6819823/

Abstract

This study presents the properties of a recycled aggregate geopolymer mortar made with a blend of high-calcium fly ash (HCF) and low-calcium fly ash (LCF). An experimental study was divided into two series. In series I, an effort was made to produce a more durable HCF geopolymer by partially replacing a portion of the HCF with LCF. A mortar with a 50:50 weight blend of HCF and LCF provided a high early strength and showed excellent potential in an acidic environment. In series II, recycled aggregate was used in the LCF-blended HCF geopolymer mortar. The results showed that the compressive strength of the geopolymer mortar decreased with an increase in the recycled aggregate content. The results also indicated that application of the mortar made with recycled aggregate under aggressive conditions should be avoided. However, a mixture with 25% recycled aggregate showed a compressive strength similar to that of the control mixture containing 100% natural aggregate.

摘要

本研究介绍了一种由高钙粉煤灰（HCF）和低钙粉煤灰（LCF）混合制成的再生骨料地质聚合物砂浆的性能。一项实验研究分为两个系列。在系列I中，通过用LCF部分替代一部分HCF，努力生产出更耐用的HCF地质聚合物。一种HCF和LCF重量比为50:50的砂浆具有较高的早期强度，并且在酸性环境中显示出优异的潜力。在系列II中，再生骨料被用于LCF混合的HCF地质聚合物砂浆中。结果表明，地质聚合物砂浆的抗压强度随着再生骨料含量的增加而降低。结果还表明，应避免在侵蚀性条件下使用由再生骨料制成的砂浆。然而，含有25%再生骨料的混合物显示出与含有100%天然骨料的对照混合物相似的抗压强度。