Kinh doanh - Marketing
Kinh tế quản lý
Biểu mẫu - Văn bản
Tài chính - Ngân hàng
Công nghệ thông tin
Tiếng anh ngoại ngữ
Kĩ thuật công nghệ
Khoa học tự nhiên
Khoa học xã hội
Văn hóa nghệ thuật
Sức khỏe - Y tế
Văn bản luật
Nông Lâm Ngư
Kỹ năng mềm
Luận văn - Báo cáo
Giải trí - Thư giãn
Tài liệu phổ thông
Văn mẫu
Giới thiệu
Đăng ký
Đăng nhập
Tìm
Danh mục
Kinh doanh - Marketing
Kinh tế quản lý
Biểu mẫu - Văn bản
Tài chính - Ngân hàng
Công nghệ thông tin
Tiếng anh ngoại ngữ
Kĩ thuật công nghệ
Khoa học tự nhiên
Khoa học xã hội
Văn hóa nghệ thuật
Y tế sức khỏe
Văn bản luật
Nông lâm ngư
Kĩ năng mềm
Luận văn - Báo cáo
Giải trí - Thư giãn
Tài liệu phổ thông
Văn mẫu
Thông tin
Điều khoản sử dụng
Quy định bảo mật
Quy chế hoạt động
Chính sách bản quyền
Giới thiệu
Đăng ký
Đăng nhập
0
Trang chủ
Kỹ Thuật - Công Nghệ
Kiến trúc - Xây dựng
High performance concrete under elevated temperatures
Đang chuẩn bị liên kết để tải về tài liệu:
High performance concrete under elevated temperatures
Ngọc Huyền
88
12
pdf
Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
In this study, PP fibers and air entraining admixture (AEA) were used together in an high performance concrete (HPC) mix so as to create interconnected reservoirs in concrete and to improve fire performance of HPC. For this reason, nine mixes of HPC incorporating blast furnace slag with 0.24 water-to-binder ratio and various PP and AEA contents were produced. Specimens were cast in two different sizes in order to see the effect of size and 18 series of specimens were obtained. These series subjected to elevated temperatures (300 C, 600 C and 900 C) with a heating rate of 10 C/min and after air cooling, residual mass and compressive strength of specimens were determined. The heated specimens were observed both at macro and micro scales to investigate the color changes, cracking and spalling of HPC at various temperatures. Also, thermogravimetric analyses were performed on powder samples from each nine mixes. Results showed that addition of AEA diminished the decrease in residual strength but this result was found to be irregular after 300 C for thick specimens. The collaboration of AEA and PP fibers decreased the risk of spalling of HPC. Also, size of specimen was found to be important in deterioration of HPC. | Construction and Building Materials 44 2013 317-328 ELSEVIER Contents lists available at SciVerse ScienceDirect Construction and Building Materials journal homepage www.elsevier.com locate conbuildmat High performance concrete under elevated temperatures Abdullah Huzeyfe Akca Nilufer Ozyurt Zihnioglu Department of Civil Engineering Bogazipi University Istanbul Turkey Construction and Building MATERIALS CrossMark HIGHLIGHTS Performance of HPCs under elevated temperatures. Use of PP fibers with air entraining admixture to decrease damage. Decreased spalling and increased residual strength. Complete disintegration of dense matrix under very high temperatures. Microstructural examination of cement paste-aggregate interface. ARTICLE INFO ABSTRACT Article history Received 4 February 2013 Received in revised form 28 February 2013 Accepted 2 March 2013 Available online 10 April 2013 Keywords High performance concrete Elevated temperatures Polypropylene fibers Air entraining admixture ESEM In this study PP fibers and air entraining admixture AEA were used together in an high performance concrete HPC mix so as to create interconnected reservoirs in concrete and to improve fire performance of HPC. For this reason nine mixes of HPC incorporating blast furnace slag with 0.24 water-to-binder ratio and various PP and AEA contents were produced. Specimens were cast in two different sizes in order to see the effect of size and 18 series of specimens were obtained. These series subjected to elevated temperatures 300 C 600 C and 900 C with a heating rate of 10 C min and after air cooling residual mass and compressive strength of specimens were determined. The heated specimens were observed both at macro and micro scales to investigate the color changes cracking and spalling of HPC at various temperatures. Also thermogravimetric analyses were performed on powder samples from each nine mixes. Results showed that addition of AEA diminished the decrease in residual strength but this .
TÀI LIỆU LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.