000			03351nam a2200325Ia 4500
003			MX-MdCICY
005			20250625162457.0
040			_cCICY
090			_aB-20902
245	1	0	_aNovel recycling application of high volume municipal solid waste incineration bottom ash (MSWIBA)into sustainable concrete
490	0		_vScience of the Total Environment, 838, p.156124, 2022
520	3		_aSince municipal solid waste incineration bottom ash (MSWIBA)contains some heavy metals that are harmful to the groundwater and soil, this study proposes an effective and new approach to deal with high-volume MSWIBA. Selecting 70 percent MSWIBA, 10 percent ordinary Portland cement (OPC), 10 percent fly ash/ground granulated blast furnace slag (FA/GGBFS), and 1 percent volume of polypropylene (PP)fiber as the raw materials, this project designed and manufactured cold-bonded fiber aggregates (CBFAs)and applied them into sustainable concrete. It was found that the water absorption of CBFAs was between 12 and 14 percent, the bulk density was between 900 and 1100 kg/m3, and the compressive strength of single particle was greater than 1.8 MPa. And it was found that the mechanical strength and bulk density of CBFAs were positively correlated, while the mechanical strength and water absorption were negatively correlated. The leaching behaviors of CBFAs on Cu, Pb, Cd, and Cr were successfully suppressed to less than 1 percent of that originally from MSWIBA, which can be in line with the Chinese standards. Additionally, it is also found that the green concrete with adding GGBFS-CBFAs has higher overall fluidity and better mechanical properties than the concrete with FA-CBFAs. The mechanical properties of concrete were the best under the replacement rate of 60 percent of CFBAs, and the strength of green concrete added with GGBFS-CBFAs reached 96 percent of that of ordinary concrete. In this study, the rapid chloride ion penetration test, mercury intrusion and electron microscope tests found that the bonding effect between the CBFAs and the green concrete matrix was better, and the pore structure in the transition zone of the surrounding interface was refined. The proportion of transition pores in the pore structure was up to 59 percent. This shows that the concrete added with CBFAs has better resistance to chloride ion diffusion, and has some improvement on the durability. This research suggests that CBFAs including high volume MSWIBA has the potential to be successfully applied as the alternative to natural aggregates in sustainable concrete, and this can also advance waste recycling, and solidify high volume heavy metals in infrastructures.
650	1	4	_aMUNICIPAL WASTE INCINERATION BOTTOM ASH
650	1	4	_aCOLD-BONDED FIBER AGGREGATES
650	1	4	_aGREEN SUSTAINABLE CONCRETE
650	1	4	_aMECHANICAL STRENGTH
650	1	4	_aMICROSTRUCTURES
650	1	4	_aCHLORIDE ION PERMEABILITY
650	1	4	_aWASTE RECYCLING
700	1	2	_aLiu, J.
700	1	2	_aFan, X.
700	1	2	_aLi, Z.
700	1	2	_aZhang, W.
700	1	2	_aJin, H.
700	1	2	_aXing, F.
700	1	2	_aTang, L.
856	4	0	_uhttps://drive.google.com/file/d/1M67Ya5zAxj4D6vPUHzoxCucil8AGM7JP/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942			_2Loc _cREF1
008			250602s9999 xx |||||s2 |||| ||und|d
999			_c54982 _d54982