ảnh hưởng hàm lượng muội silic đến cường độ nén của bê tông chất lượng siêu cao

Chỉ số đề mục

67.11.29

Lĩnh vực nghiên cứu

Kỹ thuật xây dựng

Dạng tài liệu

Tác giả

Bạch Quốc Sĩ, Nguyễn Thị Thanh Trúc⁽¹⁾

Nhan đề

ảnh hưởng hàm lượng muội silic đến cường độ nén của bê tông chất lượng siêu cao

Nhan đề tiếng anh

Influence of silica fume content on compressive strength of ultra high performance concrete

Nguồn trích

Xây dựng

Năm xuất bản

2017

Số

11

Trang

116-120

ISSN

0866-8762

Từ khóa

Xây dựng, Bê tông, Muội silic, Vữa xi măng

Từ khóa tiếng anh

Tóm tắt

Dựa trên thực nghiệm nén những hỗn hợp bê tông khác nhau, bài báo phân tích sự ảnh hưởng của hàm lượng SF lên cường độ nén của các mẫu thử

Tóm tắt tiếng anh

The Reactive Powder Concrete (RPC) is Ultra-High Performance Concrete (UHPC). It is developed in the years 1990 by French company, they use the small aggregates and the ultrafine such as the silica fume (SF) for reaching a high compact. RPC is characterized via a very low water to cement ratio (W/C) which is the source of the small volume of total pore and high volume of solid components. These characteristics RPC can lead up to the high compressive strength in the material concrete. Based on the existing experimental data on the compressive strength of the different concrete mixes, the article analyzes the impact of the SF concentration on the compressive strength of the samples. This impairment related to calcium hydrosilicate (CSH) gel content in concrete. The CSH content are calculated based on a simulation program for the hydration of the Portland cement (OPC) blended SF, thereby quantifiable components solid phase, liquid phase as well as the pore in concrete. The simulation of hydration of the ope blended SF is verified through experiments to measure the heat developed in the concrete and the pore in paste due to the hydration reaction

Kí hiệu kho

TTKHCNQG, CVv21

File toàn văn

Xem toàn văn

Tài liệu tham khảo

[1] Taylor, H F W (1997), Cement Chemistry,
[2] Tazawa, E., et al. (1995), Chemical Shrinkage and Autogenous Shrinkage of Hydrating Cement Paste,Cement and Concrete Research
[3] Maekawa, K., Ishida, T., Kishi, T. (2008), Multi-scale Modeling of Structural Concrete,
[4] Kishi, T., Maekawa, K. (1997), Multi-component Model for Hydration Heating of Blended Cement with Blast Furnace Slag and Fly Ash,Proceedings of JSCE
[5] Jennings, H. M. (2000), A Model for the Microstructure of Calcium Silicate Hydrate in Cement Paste,Cement and Concrete Research
[6] Brouwers, H.J.H. (2003), Chemical Reactions in Hydrated Ordinary Portland Cement Based on the Work by Powers and Brownyard,Proceedings 15th Ibausil, Weimar
[7] Breugel, K.V. (1991), Simulation of hydration and formation of structure in hardening cement-based materials,
[8] Bernard, O., Ulm, F. Jrc. (2003), A multiscale micromechanics-hydration model for early-age elastic properties,Cement and Concrete Research
[9] Bentz, D.P. (2005), Modeling the Influence of Limestone Filler on Cement Hydration Using CEMHYD3D,Cement Concrete Compose
[10] Bach, Quoc Si, Khelidj, A. (2014), Effet de la concentration la fumée de silice sur le retrait chimique des BUHP,32èmes Rencontres Universitaires de L'AUGC
[11] Bach, Quoc Si (2014), Développement, caractérisation et modélisation des Bétons de Poudres Réactives,
[12] Aitcin, P.C. (1998), High-Performance Concrete,