Impermeability Research of Autoclaved Propylene Oxide Sludge Shell-aggregate Concrete

Abstract

We aimed to reuse the propylene oxide sludge (POS). Propylene oxide sludge shell-aggregate (POSS-A) and propylene oxide sludge gradient shell-aggregate (POSGS-A) whose main hydrated phase is tobermorite were successfully manufactured by the hydrothermal synthesis of POS and silica materials under the condition of autoclaved (180 °C, 1.0 MPa) curing. Influences of pre-wetting time of coarse aggregate and pressure application mode on the different concretes were investigated. The experimental results show that the concrete with POSS-A as coarse aggregate (POSS-A concrete), the concrete with POS gradient shell-aggregate as coarse aggregate (POSGS-A concrete), sintered aggregate concrete and common concrete, all have excellent impermeability performance whatever the pre-wetting time of coarse aggregate is 0.5 h or 24 h, and the pre-wetting time of coarse aggregate has a negligible influence on the concrete. The influence degree of pressure application mode on the impermeability performance of the sintered aggregate concrete is the greatest among three kinds of concrete, which has a negligible influence on impermeability performance of the other concretes. POSGS-A can be used as a green building light aggregate in hydraulic concrete.

Keywords

propylene oxide sludge / hydrothermal synthesis / autoclaved aggregate / impermeability / concrete

References

[1] Seong TY, Tae YH, Jin KK. The Effects of Hydraulic Pressure and Crack Width on Water Permeability of Penetration Crack-induced Concrete[J]. Constr. Build. Mater., 2011, 25(5): 2576-2583.

[2] Basheer L, Kropp J, Cleland DJ. Assessment of the Durability of Concrete from Its Permeation Properties: A Review[J]. Constr. Build. Mater., 2001, 15: 93-103.

[3] Hoseini M, Bindiganavile V, Banthia N. The Effect of Mechanical Stress on Permeability of Concrete: A Review[J]. Cem. Concr. Compos., 2009, 31(4): 213-220.

[4] Chen SH, He Z. Status Quo and Prospects for Simulation Analysis of Service Life for Concrete Dam[J]. Eng. J. Wuhan Univ., 2011, 3: 273-280. (in Chinese)

[5] Hall C, Hoff WD. Water Transport in Brick, Stone and Concrete[M], 2012 London: Spon Press.

[6] Kameche Z, Ghomari F, Choinska M, et al. Assessment of Liquid Water and Gas Permeabilities of Partially Saturated Ordinary Concrete[J]. Constr. Build. Mater., 2014, 65: 551-565.

[7] Li X, Li D, Xu Y. Modeling the Effects of Microcracks on Water Permeability of Concrete Using 3D Discrete Crack Network[J]. Compos. Struct., 2019, 210: 262-273.

[8] Li D, Liu S. The Influence of Steel Fiber on Water Permeability of Concrete under Sustained Compressive Load[J]. Constr. Build. Mater., 2020, 242: 1-9.

[9] Wang FM, Li MQ, Zhang W. Analysis of the Production Status and Development Prospect of Propylene Oxide in China[J]. Technology & Economics in Petrochemicals, 2020, 36(2): 20-25.

[10] Ma HL, Cui C, Li X, et al. Study of High Performance Autoclaved Shell-aggregate from Propylene Oxide Sludge[J]. Constr. Build. Mater., 2011, 25: 3030-3037.

[11] Ma HL, Cui C, Li X. Mechanical Properties of Autoclaved Shell-aggregate[J]. Journal of Wuhan University of Technology-Mater. Sci. Ed., 2011, 4: 719-725.

[12] Ma HL, Cui C, Li X. Study on Mechanical Properties of Steel Fiber Reinforced Autoclaved Lightweight Shell-Aggregate Concrete[J]. Mater Design, 2013, 52: 565-571.

[13] Ma HL, Cui C, Zhang BX. Effect of Autoclaved Aggregate Structure on Strength of Concrete[J]. Applied Mechanics and Materials, 2011, 44–47: 2438-2442.

[14] GB/T 17431.2-1998. Lightweight Aggregates and Its Test Methods-Part 2: Test Methods for Lightweight Aggregates[S]. (in Chinese)

[15] GB/T 50082-2009. Standard Test Methods for Long-term Performance and Durability of Ordinary Concrete[S]. (in Chinese)

[16] Mu LF, Li SQ, Feng JJ, et al. Experimental Study on the Influence of Prewetted Aggregate on the Properties of Ceramsite Concrete[J]. China Concrete and Cement Products, 2019, 11: 66-69. (in Chinese)

[17] Chen Y, Han TY. Influence of Pre-wetted Light-weight Aggregates on Workability of Combined Aggregate Concrete[J]. Bulletin of the Chinese Ceramic Society, 2015, 34(11): 3377-3382. (in Chinese)

[18] Ma HL, Cui C, Ma WT, et al. Enhancement Mechanism of New Type Autoclave-d Calcium Carbide Residue Shell-aggregate on Concrete[J]. Cem. Concr. Compos., 2016, 72: 146-154.

[19] Wang DY, Cui C, Chen XF, et al. Characteristics of Autoclaved Lightweight Aggregates with Quartz Tailingsand Its Effect on the Mechanical Properties of Concrete[J]. Constr. Build. Mater., 2020, 262: 1-10.

[20] Hossain KMA, Ahmed S, Lachemi M. Lightweight Concrete Incorporating Pumice Based Blended Cement and Aggregate: Mechanical and Durability Characteristics[J]. Constr. Build. Mater., 2011, 25: 1186-1195.

[21] Shen PL, Lu LN, Wang ZF, et al. Water Desorption Characteristics of Saturated Lightweight Fine Aggregate in Ultra-high Performance Concrete[J]. Cem. Concr.Compos., 2020, 106: 1-13.

[22] Winslow DN, Cohen MD, Bentz DP, et al. Percolation and Pore Structure in Mortars and Concrete[J]. Cem. Concr. Res., 1994, 24: 25-37.

[23] Scrivener KL, Nemati KM. The Percolation of Pore Space in the Cement Paste/Aggregate Interfacial Zone of Concrete[J]. Cem. Concr. Res., 1996, 26(1): 35-40.

[24] Ollivier JP, Maso JC, Bourdette B. Interfacial Transition Zone in Concrete[J]. Adv. Cem. Based Mater., 1995, 2: 30-38.

[25] Wang LC, Ueda T. Mesoscale Modeling of Water Penetration into Concrete by Capillary Absorption[J]. Ocean Eng., 2011, 38: 519-528.