Durability and microstructure analysis of the road base material prepared from red mud and flue gas desulfurization fly ash

2020 ◽  
Vol 27 (4) ◽  
pp. 555-568
Author(s):  
Emile Mukiza ◽  
Ling-ling Zhang ◽  
Xiao-ming Liu
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Red Mud ◽  
Base Material ◽  
Microstructure Analysis ◽  
Flue Gas Desulfurization ◽  
The Road ◽  
Road Base

Research on the Mechanical Performance of the Road Base Materials with Steel Slag Sand

2012 ◽  
Vol 174-177 ◽  
pp. 676-680
Author(s):  
Fang Xu ◽  
Ming Kai Zhou ◽  
Jian Ping Chen
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Unconfined Compressive Strength ◽  
Mechanical Performance ◽  
Steel Slag ◽  
Base Material ◽  
Strength Performance ◽  
The Road ◽  
Road Base ◽  
Base Materials

The unconfined compressive strength is used to be the valuation index, the mechanical performance of three kinds of new road base material, which are fly ash stabilized steel slag sand (FA-SS for short), lime and fly ash stabilized steel slag sand (L-FA-SS for short), cement and fly ash stabilized steel slag sand(C-FA-SS for short), are studied in this paper. The results show that the unconfined compressive strength performance of FA-SS is similar to L-FA-SS, and it can meet the highest strength when the ratio of steel slag to fly ash is 1:1~2:1. When the ratio of fly ash to the steel slag is 10:90, it is good to use cement stabilizing. Comparing the new road base materials with the traditional road base material, the former has better strength performance and economy function advantage.

scholarly journals Modification of Lime-Fly Ash-Crushed Stone with Phosphogypsum for Road Base

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Hao Zhang ◽  
Yuan Cheng ◽  
Lei Yang ◽  
Weikang Song
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Base Material ◽  
Engineering Properties ◽  
Crushed Stone ◽  
Fine Aggregate ◽  
The Road ◽  
Road Base ◽  
Shrinkage Cracks ◽  
Phosphogypsum Waste

In order to increase the recycling of phosphogypsum waste, this study explored the feasibility of using phosphogypsum to replace some of the lime and aggregate in the lime-fly ash-crushed stone mixture which is a widely used road base material in China. For this purpose, compaction, compressive strength, composition structures, wetting-drying cycle tests, and shrinkage tests were carried out on the lime-fly ash-phosphogypsum-crushed stone composite to investigate its performance. The results indicate that lime-fly ash-crushed stone modified with phosphogypsum has the required strength of the road base material and favourable performances in environment (wetting-drying cycle) stability. The image processing analysis and shrinkage tests demonstrated that phosphogypsum can significantly improve the compactness and shrinkage performance of lime-fly ash-crushed stone mixture. A suitable content of phosphogypsum and a reasonable content of fine aggregate are conducive to improving the roadway engineering properties (i.e., decreasing shrinkage cracks and increasing compressive strength) of lime-fly ash-phosphogypsum-crushed stone composites.

Synergistic utilization of red mud for flue-gas desulfurization and fly ash-based geopolymer preparation

2019 ◽  
Vol 369 ◽  
pp. 503-511 ◽  
Author(s):  
Qingke Nie ◽  
Wei Hu ◽  
Baoshan Huang ◽  
Xiang Shu ◽  
Qiang He
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Red Mud ◽  
Flue Gas Desulfurization

Flue gas desulfurization (FGD) fly ash as a sustainable, safe alternative for cement-based materials

2021 ◽  
Vol 283 ◽  
pp. 124646
Author(s):  
Ivan Navarrete ◽  
Felipe Vargas ◽  
Patricia Martinez ◽  
Alvaro Paul ◽  
Mauricio Lopez
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Flue Gas Desulfurization ◽  
Safe Alternative ◽  
Cement Based Materials
Sign in / Sign up

Export Citation Format

Share Document