偏高岭土
硅酸盐水泥
粉煤灰
石灰
磨细高炉矿渣
火山灰
去壳
火山灰
土壤稳定
废物管理
材料科学
环境科学
硅粉
水泥
制浆造纸工业
土壤水分
冶金
复合材料
工程类
生物
土壤科学
植物
作者
Jeremiah J. Jeremiah,Samuel Abbey,Colin A. Booth,Anil Kashyap
出处
期刊:Geotechnics
[MDPI AG]
日期:2021-11-29
卷期号:1 (2): 439-459
被引量:15
标识
DOI:10.3390/geotechnics1020021
摘要
The need to transit to greener options in soil stabilisation has revamped research on the use of industrial and agricultural by-products in order to cut down on the current carbon footprint from the use of ordinary Portland cement (OPC) and lime related binders for the treatment of problematic soils. This study is a review on the use of geopolymers constituted by alkali activation of several industrial wastes such as pulverised fuel ash (PFA), ground granulated blast furnace slag (GGBS), metakaolin (MK), glass powder (GP), palm oil fuel ash (POFA), silica fume (SF), rice husk ash (RHA), volcanic ash (VA), and marble powder (MP) for the stabilisation of weak clays. The performance of stabilised clays as subgrade and subbase materials for road pavement construction was evaluated by comparing the 7 day UCS of the treated clays with the strength requirement for stabilised materials as outlined in BS EN 16907-4. The result of the study shows that geopolymers can be employed in improving the engineering properties of problematic clays to meet practical applications. Strength improvement was observed in the stabilised clays with increased precursor content, molarity of alkaline activator, and curing period.
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