Influence of composition of curing agent and sand ratio of engineering excavated soil on mechanical properties of fluidized solidified soil

Shuai Liu; Jinsheng Zhan; Xiaoli Wang

Otwarty dostęp

Influence of composition of curing agent and sand ratio of engineering excavated soil on mechanical properties of fluidized solidified soil

Shuai Liu

Jinsheng Zhan

oraz

Xiaoli Wang

| 25 lip 2023

Materials Science-Poland

Tom 41 (2023): Zeszyt 1 (March 2023)

O artykule

Poprzedni artykuł

Następny artykuł

Zacytuj

Udostępnij

Data publikacji: 25 lip 2023

Zakres stron: 57 - 67

Otrzymano: 24 mar 2023

Przyjęty: 22 maj 2023

DOI: https://doi.org/10.2478/msp-2023-0007

Słowa kluczowe
engineered excavated soil, fluidized solidified soil, composition ratio, mechanical properties, carbon emission

© 2023 Shuai Liu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Variation diagram of strength of fluidized solidified soil with composition ratio of curing agent

Unconfined compressive strength of fluidized solidified soil with different sand ratio

X-ray diffraction patterns of fluidized solidified soil with different sand ratio after 28 days of curing. (AFt: ettringite (3CaO·Al2O3·3CaSO4·32H2O); CSH: calcium silicate hydrate (Ca5Si6O16(OH)*4H2O); CASH: calcium silicoaluminate hydrate (Ca2Al2 SiO7(OH)*4nH2O))

Micrograph of fluidized solidified soil with different sand ratio after 28 days of curing (AFt: ettringite (3CaO·Al2O3·3CaSO4 ·32H2O))

Variation of softening coefficient of fluidized solidified soil with different sand ratio with curing age before soaking

Comparison diagram of carbon emissions of fluidized solidified soil and traditional backfill materials

Field application of the fluidized solidified soil prepared in this paper

Surface morphology of uncured and cured solidified soil

Physical characteristics of engineering excavated soil

Type	Water content (%)	Density (g/cm³)	Liquid limit (%)	Plastic limit (%)	Plasticity index (%)
A	28.8	1.94	39.9	21.7	18.2
B	23.2	1.98	38.9	20.9	18.0
C	26.6	1.95	35.3	20.6	14.7

Basic properties of fly ash

Fineness (%)	Chloride ion content (%)	Water demand ratio (%)	Loss on ignition (%)	Sulfur trioxide (%)	Water content (%)
19.8	0.014	102	2.38	0.79	0.11

Mixing ratio of the fluidized solidified soil

Number	Type of soil	Soil (kg)	Cement (kg)	Fly ash (kg)	Quicklime (kg)	Water (kg)	Slump (kg)
A-1	A	800	60	60	0	736	240
A-2	A	800	60	45	15	736	235
A-3	A	800	60	30	30	736	220
A-4	A	800	60	15	45	736	190
A-5	A	800	60	0	60	736	180
B-1	B	800	60	20	30	400	220
C-1	C	800	60	30	30	294	220

Mass ratio (kg) and corresponding raw material carbon emission factor used in carbon emission calculation of different backfill materials [28–32]

Backfill materials	Clay	Quicklime	Cement	Fly ash	Sand	Aggregate	Water	Water reducer	Foaming agent	Excavated soil
Lime-soil	1120	360
C15 plain concrete			168	82	840	1170	160	2.5
Foamed concrete			332		812		358		0.23
Fluidized solidified soil		48	72	24			598			958
Carbon emission factor (kg CO₂e/t)	2.69	1190	735	8	2.51	2.18	0.168	28	1950	1.0

Chemical composition of cement (wt%)

Materials	CaO	SiO₂	Al₂O₃	Fe₂O₃	MgO	SO₃	Alkali content	Loss
Cement	59.09	22.82	6.98	2.25	2.33	2.27	0.70	3.08

eISSN:: 2083-134X
Język:: Angielski

Częstotliwość wydawania:: 4 razy w roku
Dziedziny czasopisma:: Materials Sciences, other, Nanomaterials, Functional and Smart Materials, Materials Characterization and Properties

Kanał RSS czasopisma

Influence of composition of curing agent and sand ratio of engineering excavated soil on mechanical properties of fluidized solidified soil

Data publikacji: 25 lip 2023

Zakres stron: 57 - 67

Otrzymano: 24 mar 2023

Przyjęty: 22 maj 2023

DOI: https://doi.org/10.2478/msp-2023-0007

Słowa kluczowe
engineered excavated soil, fluidized solidified soil, composition ratio, mechanical properties, carbon emission

© 2023 Shuai Liu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Fig. 8.

Fig. 9.

Physical characteristics of engineering excavated soil

Basic properties of fly ash

Mixing ratio of the fluidized solidified soil

Mass ratio (kg) and corresponding raw material carbon emission factor used in carbon emission calculation of different backfill materials [28–32]

Chemical composition of cement (wt%)

Number	Type of soil	Soil (kg)	Cement (kg)	Fly ash (kg)	Quicklime (kg)	Water (kg)	Slump (kg)
A-1	A	800	60	60	0	736	240
A-2	A	800	60	45	15	736	235
A-3	A	800	60	30	30	736	220
A-4	A	800	60	15	45	736	190
A-5	A	800	60	0	60	736	180
B-1	B	800	60	20	30	400	220
C-1	C	800	60	30	30	294	220

Number	Type of soil	Soil (kg)	Cement (kg)	Fly ash (kg)	Quicklime (kg)	Water (kg)	Slump (kg)
A-1	A	800	60	60	0	736	240
A-2	A	800	60	45	15	736	235
A-3	A	800	60	30	30	736	220
A-4	A	800	60	15	45	736	190
A-5	A	800	60	0	60	736	180
B-1	B	800	60	20	30	400	220
C-1	C	800	60	30	30	294	220

Influence of composition of curing agent and sand ratio of engineering excavated soil on mechanical properties of fluidized solidified soil

Data publikacji: 25 lip 2023

Zakres stron: 57 - 67

Otrzymano: 24 mar 2023

Przyjęty: 22 maj 2023

DOI: https://doi.org/10.2478/msp-2023-0007

Słowa kluczoweengineered excavated soil, fluidized solidified soil, composition ratio, mechanical properties, carbon emission

© 2023 Shuai Liu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Fig. 8.

Fig. 9.

Physical characteristics of engineering excavated soil

Basic properties of fly ash

Mixing ratio of the fluidized solidified soil

Mass ratio (kg) and corresponding raw material carbon emission factor used in carbon emission calculation of different backfill materials [28–32]

Chemical composition of cement (wt%)

Słowa kluczowe
engineered excavated soil, fluidized solidified soil, composition ratio, mechanical properties, carbon emission

Number	Type of soil	Soil (kg)	Cement (kg)	Fly ash (kg)	Quicklime (kg)	Water (kg)	Slump (kg)
A-1	A	800	60	60	0	736	240
A-2	A	800	60	45	15	736	235
A-3	A	800	60	30	30	736	220
A-4	A	800	60	15	45	736	190
A-5	A	800	60	0	60	736	180
B-1	B	800	60	20	30	400	220
C-1	C	800	60	30	30	294	220