Preparation of Heavyweight Ultra-high Performance Concrete Using Barite Sand and Titanium-rich Heavy Slag Sand

Abstract

The heavyweight ultra-high performance concrete (HUHPC) was prepared with barite sand partially replaced by titanium-rich heavy slag sand (THS) at replacement proportion of 0%, 30%, 50%, 70% and 100% in this work. The results show that THS incorporation can effectively improve the mechanical properties and reduce the volume shrinkage of HUHPC. The HUHPC with 50% THS replacement reaches an apparent density of 2 890 kg/m³ (for fresh HUHPC), 28 d compressive strength of 129 MPa, 28 d flexural strength of 23 MPa, 28 d flexural toughness of 28.4, 56 d volume shrinkage of 359×10⁻⁴ and, as expected, excellent durability. Microstructural investigation demonstrates that the internal curing of pre-wetted THS promotes the hydration of the surrounding cement paste thereby strengthening the interfacial transition zone, resulting in the “hard shell” formation around aggregate to “protect” the aggregate. Additionally, the “pin structure” significantly improves the cement paste-aggregate interfacial connection. The combination of “hard shell protection” and “pin structure” remarkably improve the mechanical properties of HUHPC produced with porous THS aggregate.

Keywords

heavyweight ultra-high performance concrete / titanium-rich heavy slag sand / mechanical properties / durability / internal curing

References

[1] Azeez M O, Ahmad S, Aldulaijan S U, et al. Radiation Shielding Performance of Heavy-weight Concrete Mixtures[J]. Construction and Building Materials, 2019, 224: 284-291.

[2] Zalegowski K, Piotrowski T, Garbacz A, et al. Relation between Microstructure, Technical Properties and Neutron Radiation Shielding Efficiency of Concrete[J]. Construction and Building Materials, 2020, 235: 1-20.

[3] Mostofinejad D, Reisi M, Shirani A. Mix Design Effective Parameters on γ-ray Attenuation Coefficient and Strength of Normal and Heavyweight Concrete[J]. Construction and Building Materials, 2012, 28(1): 224-229.

[4] Azreen N M, Raizal S M, Mugahed Amran Y H, et al. Simulation of Ultra-high-performance Concrete Mixed with Hematite and Barite Aggregates using Monte Carlo for Dry Cask Storage[J]. Construction and Building Materials, 2020, 263: 1-14.

[5] Yazc H, Yardmc M Y, Aydin S, et al. Mechanical Properties of Reactive Powder Concrete Containing Mineral Admixtures under Different Curing Regimes[J]. Construction and Building Materials, 2009, 23(3): 1223-1231.

[6] Ozen S, Sengul C, Tasdemir M, et al. Properties of Heavyweight Concrete for Structural and Radiation Shielding Purposes[J]. Arabian Journal for Science and Engineering, 2016, 41(4): 1573-1584.

[7] Akkurt I, El-Khayatt A M. The Effect of Barite Proportion on Neutron and Gamma-ray Shielding[J]. Annals. of Nuclear Energy, 2013, 51: 5-9.

[8] Gokce H S, Yalcinkaya C, Tuyan M. Optimization of Reactive Powder Concrete by Means of Barite Aggregate for Both Neutrons and Gamma Rays[J]. Construction and Building Materials, 2018, 189: 470-477.

[9] Sharma A, Reddy G R, Varshney L, et al. Experimental Investigations on Mechanical and Radiation Shielding Properties of Hybrid Lead-steel Fiber Reinforced Concrete[J]. Nuclear Engineering and Design, 2009, 239(7): 1180-1185.

[10] Gonzalez-Ortega M A, Cavalaro S H P, Aguado A. Influence of Barite Aggregate Friability on Mixing Process and Mechanical Properties of Concrete[J]. Construction and Building Materials, 2015, 74: 169-175.

[11] Zheng J H, Lin D, Xi X L. Effect of High Temperature on Mechanical Properties of Heavy Concrete. Guangdong Building Materials, 2011, 27(09): 16-17. (in Chinese)[J]

[12] Ling T C, Poon C S. Feasible Use of Recycled CRT Funnel Glass as Heavyweight Fine Aggregate in Barite Concrete[J]. Journal of Cleaner Production, 2012, 33: 42-49.

[13] Ling T C, Poon C S. Utilization of Recycled Glass Derived from Cathode Ray Tube Glass as Fine Aggregate in Cement Mortar[J]. Journal of Hazardous Materials, 2011, 192(2): 451-456.

[14] Ling T C, Poon C S. Effects of Particle Size of Treated CRT Funnel Glass on Properties of Cement Mortar[J]. Materials and Structures, 2013, 46(1–2): 25-34.

[15] Jankovic K, Stankovic S, Bojovic D, et al. The Influence of Nano-silica and Barite Aggregate on Properties of Ultra High Performance Concrete[J]. Construction and Building Materials, 2016, 126: 147-156.

[16] Li X Y, Li J, Lu Z Y, et al. Preparation and Properties of Reactive Powder Concrete by Using Titanium Slag Aggregates[J]. Construction and Building Materials, 2020, 234: 1-14.

[17] Pan H Y, Zhang X H, Wu J, et al. Sustainability Evaluation of a Steel Production System in China Based on Energy[J]. Journal of Cleaner Production, 2016, 112(2): 1261-1812.

[18] Sun J K, Chen W, Huang S H, et al. Study on Long-Term Deformation and Durability of Complex High-Titanium Heavy Slag Concrete[J]. Advanced Materials Research, 2011, 183–185: 1817-1821.

[19] Zhou C L, Chen W, Ruan X L, et al. Experimental Study on Axial Compression Behavior and Bearing Capacity Analysis of High-Titanium Slag CFST Columns[J]. Applied Sciences, 2019, 9(10): 1-16.

[20] Li X W, Li X W, Yuan X. Seismic Performance of High Titanium Heavy Slag High Strength Concrete Columns[J]. Advanced Building Materials and Sustainable Architecture, 2012, 174–177: 455-459.

[21] Sun J K, Huang S H, Chen W, et al. Experimental Study on Mechanics Performance of Complex High-Titanium Heavy Slag Concrete[J]. Advanced Materials Research, 2013, 671–674(2): 1800-1804.

[22] Ding Q J, Mu T M, Liu X Q, et al. Preparation and Application of Self-compacting Concrete by High Titanium Heavy Slag(in Chinese) [J]. Construction Technology, 2015, 44(3): 57-69.

[23] Fu W G, Xie H E. Progress in Technologies of Vanadium-Bearing Titanomagnetite Smelting in PanGang[J]. Steel Research International, 2011, 82(5): 501-504.

[24] Dong M G. Experimental Study on Gamma-ray Shielding Materials Containing Vanadium and Boron Oxides[D], 2015 Shenyang: Northeast University. (in Chinese)

[25] Zhong S, Chen W, Wang W, et al. Experimental Study on Frost Resistance of High-titanium Heavy Slag Concrete[C].4th International Conference on Sensors, Measurement and Intelligent Materials, 2015

[26] Li X W, Li X W, Yuan X. Seismic Performance of High-titanium Heavy Slag High Strength Concrete Columns[J]. Applied Mechanics and Materials, 2012, 174–177: 455-459.

[27] Ministry of Transport, People’s Republic of China. Test Methods of Aggregates for Highway Engineering[S]. JTG E42-2005, 2005 (in Chinese)

[28] Huang X L, Ding Q J. Radiation Shielding Performance of Aggregates Made by Sludge with High Content of Heavy Metal[J]. Journal of Wuhan University of Technology, 2013, 28(5): 980-983.

[29] General Administration for Quality Supervision and Inspection and Quarantine& Standardization Administration, People’s Republic of China. Sand for Construction[S]. GB/T 14684-2011, 2011 (in Chinese)

[30] Hüsken G, Brouwers H J H. A New Mix Design Concept for Earth-moist Concrete: A Theoretical and Experimental Study[J]. Cement and Concrete Research, 2008, 38(10): 1246-1259.

[31] Zhang X Z, Liu Z C, Wang F Z. Autogenous Shrinkage Behavior of Ultra-high Performance Concrete[J]. Construction and Building Materials, 2019, 226: 459-468.

[32] Saidani K, Ajam L, Ouezdou M B. Barite Powder as Sand Substitution in Concrete: Effect on Some Mechanical Properties[J]. Construction and Building Materials, 2015, 95: 287-295.

[33] Liu J H, Shi C J, Ma X W, et al. An Overview on the Effect of Internal Curing on Shrinkage of High Performance Cement-based Materials[J]. Construction and Building Materials, 2017, 146: 702-712.

[34] Ministry of Housing and Urban-Rural Development & General Administration for Quality Supervision and Inspection and Quarantine, People’s Republic of China. Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete[S]. GB/T 50082-2009, 2009 (in Chinese)

[35] Lam L, Wong Y L, Poon C S. Degree of Hydration and Gel/space Ratio of High-volume Fly Ash/Cement Systems[J]. Cement and Concrete Research, 2000, 30: 747-756.

[36] Wang X F, Fang C, Kuang W Q, et al. Experimental Investigation on the Compressive Strength and Shrinkage of Concrete with Pre-wetted Lightweight Aggregates[J]. Construction and Building Materials, 2017, 155: 867-879.