掺有沉淀白炭黑和硅灰的棕榈油灰混凝土的特性

IF 5.3 Q2 ENGINEERING, ENVIRONMENTAL
Monita Olivia, M Aldi Maulidi, Fadhlurrahman, Gunawan Wibisono
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引用次数: 0

摘要

本研究调查了掺有硅灰(SF)和沉淀白炭黑(SP)的棕榈油燃料灰(POFA)混凝土作为硅酸盐复合水泥(PCC)的水泥替代材料的特性。该研究旨在评估从 POFA 中提取的沉淀白炭黑作为商用硅灰的替代品在提高棕榈油灰混凝土性能方面的潜力。研究了四种不同的混合料,包括使用 PCC 的对照混合料和使用不同数量 POFA、SF 和 SP 的三种混合料。研究分析了混凝土的新拌性能、抗压强度、强度活性指数、抗拉强度和微观结构。结果表明,添加 SF 和 SP 后,28 天时 POFA 混凝土的抗压强度分别提高了 23.34% 和 38.11%。添加了二氧化硅的混合料的强度活性指数也更高,这表明在早期龄期具有更高的水泥活性。添加二氧化硅后,混凝土的抗拉强度和孔隙率也得到了改善。扫描电镜和傅立叶变换红外分析证实,添加二氧化硅,尤其是沉淀二氧化硅,可改善混凝土的微观结构。研究得出结论,在 POFA 供应充足的亚洲国家,从 POFA 中提取的沉淀白炭黑有潜力用作 POFA 混凝土生产中的水泥替代品或添加剂。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characteristics of palm oil fuel ash concrete admixed with precipitated silica and silica fume

This study investigates the characteristics of blended Palm Oil Fuel Ash (POFA) concrete admixed with silica fume (SF) and precipitated silica (SP) as a cement replacement material for Portland Composite Cement (PCC). The study aims to evaluate the potential of precipitated silica extracted from POFA as an alternative to commercial silica fume in enhancing the properties of palm oil fuel ash concrete. Four different mixes were studied, including a control mix with PCC and three mixes with varying amounts of POFA, SF, and SP. The study analyzed the fresh properties, compressive strength, strength activity index, tensile strength, and microstructure of the concrete. The results showed that the addition of SF and SP increased the compressive strength of the POFA concrete by 23.34% and 38.11% respectively at 28 days. The strength activity index was also higher in the mixes with silica, indicating a higher pozzolanic activity at early ages. The tensile strength and porosity of the concrete were also improved with the addition of silica. The SEM and FTIR analysis confirmed that the addition of silica, especially precipitated silica, improved the microstructure of the concrete. The study concludes that the precipitated silica from POFA has the potential to be used as a cement replacement or additive in POFA concrete manufacturing in Asian countries where POFA is abundantly available.

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来源期刊
Cleaner Engineering and Technology
Cleaner Engineering and Technology Engineering-Engineering (miscellaneous)
CiteScore
9.80
自引率
0.00%
发文量
218
审稿时长
21 weeks
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