Production of UHPC with Silica and MGW
DOI:
https://doi.org/10.46421/entac.v20i1.5871Keywords:
Ultra-High Performance Concrete., Silica., MGW.Abstract
Ultra-high performance concrete (UHPC) is a special concrete known for its high durability, distinguished by its compressive strength exceeding 120 MPa. This is attributed to its dense structure and low porosity. The use of silica and filler (Marble and Granite Waste - MGW) aims to fill gaps between the particle size distributions of the components, thereby enhancing its properties. This study investigated UHPC mixtures, varying the percentage of superplasticizer and silica, and incorporating MGW to achieve the minimum regulatory parameters for UHPC classification at 56 days. In the fresh state, the spread was studied, while compressive and flexural tensile strengths were examined in the hardened state. It was concluded that the best performance was observed in the mixture with 20% sílica and 1.5% superplasticizer, exhibiting minimum spread, tensile strength and compression stregth at 56 days, reaching 130 MPa compressive strength at 91 days, highlighting the potential of silica and MGW in UHPCs.
References
CHRIST, R.; TUTIAKIAN B.; HELENE P., Concreto de ultra alto desempenho: UHPC - Fundamentos, propriedades e dosagem, 1a ed. São Paulo, 2022.
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM). C1856/1856M-17. Standart Practice for Fabrication and Testing Specimens of Ultra High Performance Concrete, Philadelphia, United States, 2017.
ASSOCIAÇÃO FRANCESA DE ENGENHARIA. F P 18-710 – Design of concrete structures: specific rules fos Ultra-High Fibre- Reinforced Concrete (UHPFRC). 2016.
PERRY, V. H.; AMERICA,N. What Really is Ultra-High Performance Concrete? Towards a Global Definition, In: THE 2nd CONFERENCE ON ULTRA-HIGH PERFORMANCE CONCRETE, MATERIALS AND STRUCTURES – UHPFRC, 2018, Fuzhou. Proceedings [...] Fuzhou, China, 2018.
LI, J.; WU, Z.; SHI, C.; YUAN, Q.; ZHANG, Z. Durability of ultra-high performance concrete – A review, Construction and Building Materials, vol. 255. Elsevier Ltd, 2020. DOI: 10.1016/j.conbuildmat.2020.119296.
CORRÊA, J. A.; PIMENTEL, L. L., Aplicação da dosagem por empacotamento de partículas no UHPC com cinzas de casca de arroz, In: BRAZILIAN TECHNOLOGY SYMPOSIUM, 2021, Campinas. Proceedings [...] Campinas: Universidade PUC, 2021.
LARRARD, F. ; SEDRAN, T. Optimization of ultra-high-performance concrete by the use of a packing model, Cement and Concrete Research, vol. 24, no. 6, pp. 997–1009, 1994, DOI: 10.1016/0008-8846(94)90022-1.
ALMADA, B. S.; DOS SANTOS, W. J.; SOUZA, S. R., Marble and granite waste as mineral addition in mortars with different water-cement ratios, Ambiente Construído, vol. 22, no. 4, pp. 7–22, 2022, DOI: 10.1590/s1678-86212022000400624.
GALETAKIS, M.; SOULTANA, A. A review on the utilisation of quarry and ornamental stone industry fine by-products in the construction sector. Construction and Building Materials, v. 102, p. 769–781, 2016.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NM 49. Agregado miúdo. Determinação de impurezas orgânicas. Rio de Janeiro, 2001.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NM 46. Agregados - Determinação do material fino que passa através da peneira 75 μm, por lavagem. Rio de Janeiro, 2001.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 16916. Agregado miúdo - Determinação da densidade e da absorção de água. Rio de Janeiro, 2021.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 16972. Agregado miúdo - Determinação da densidade e da absorção de água. Rio de Janeiro, 2021.
KHAN, A.; HAQ, M.; NAQVI, T. Towards Enhancing Properties of Concrete Mixed with Silica. In: Saha, S., Sajith, A.S., Sahoo, D.R., Sarkar, P. (eds) Recent Advances in Materials, Mechanics and Structures. Lecture Notes in Civil Engineering, vol 269. Springer, Singapore. 2023. DOI:10.1007/978-981-19-3371-4_59.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 15823. Concreto autoadensável. Rio de Janeiro, 2017.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 13279. Argamassa para assentamento e revestimento de paredes e tetos - Determinação da resistência à tração na flexão e à compressão. Rio de Janeiro, 2005.
LI, Z.; ZHOU, T.; LIU, H.; JIN, Y.; PANG, Y.; LOU, H.; YANG, D.; XUEQING, Q. Study on the dispersion performance and mechanism of polycarboxylate superplasticizer by the long side‐chain dicarboxyl terminated. Journal of Applied Polymer Science. 2023. DOI: 140. 10.1002/app.53931.
