Thông tin chung

  English

  Đề tài NC khoa học
  Bài báo, báo cáo khoa học
  Hướng dẫn Sau đại học
  Sách và giáo trình
  Các học phần và môn giảng dạy
  Giải thưởng khoa học, Phát minh, sáng chế
  Khen thưởng
  Thông tin khác

  Tài liệu tham khảo

  Hiệu chỉnh

 
Số người truy cập: 35,782,721

 Measuring Permeability of Cementitious Materials
marriage affairs blog.ivanovtech.com i want an affair
walgreens pharmacy coupon walgreen online coupons promo codes walgreens
Tác giả hoặc Nhóm tác giả: Q.T. Phung, N. Maes, D. Jacques, G. De Schutter and G. Ye
cvs weekly sale cvs print prescription savings cards
Nơi đăng: Concrete Repair, Rehabilitation and Retrofitting III
abortion stories gone wrong read teenage abortion facts
; Số: ISBN 9780415899529;Từ->đến trang: 287 - 295;Năm: 2012
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT

At present, it is well-known that permeability is a more fundamental parameter for characterizing concrete durability than the standard compressive strength. Permeability governs the penetration of aggressive substances responsible for degradation and, thereby, has an important effect on the durability of cement-based materials. Despite the importance of permeability, a lot of confusion exists on a wide range of available experimental techniques for quantifying the permeability. This work aims at reviewing existing methods to measure the hydraulic conductivity. In addition, a new method was proposed based on the technique which is used to measure permeability of clay materials at the Belgian Nuclear Research Centre. A constant flow rate was applied to a permeability cell. When steady state was reached, gradient pressure was then determined to calculate permeability. The pressure and water flow was controlled by precise Syringe pumps. Tests were performed on hardened cement pastes with w/c ratio ranging from 0.5 to 0.6 in a temperature control chamber. The tests showed that the proposed method gave reliable results within a reasonable experimental time.
marriage affairs open i want an affair
walgreens prints coupons prescription coupon card free printable coupons
ABSTRACT

At present, it is well-known that permeability is a more fundamental parameter for characterizing concrete durability than the standard compressive strength. Permeability governs the penetration of aggressive substances responsible for degradation and, thereby, has an important effect on the durability of cement-based materials. Despite the importance of permeability, a lot of confusion exists on a wide range of available experimental techniques for quantifying the permeability. This work aims at reviewing existing methods to measure the hydraulic conductivity. In addition, a new method was proposed based on the technique which is used to measure permeability of clay materials at the Belgian Nuclear Research Centre. A constant flow rate was applied to a permeability cell. When steady state was reached, gradient pressure was then determined to calculate permeability. The pressure and water flow was controlled by precise Syringe pumps. Tests were performed on hardened cement pastes with w/c ratio ranging from 0.5 to 0.6 in a temperature control chamber. The tests showed that the proposed method gave reliable results within a reasonable experimental time.
unfaithful spouse will my husband cheat again i dreamed my husband cheated on me
© Đại học Đà Nẵng
 
 
Địa chỉ: 41 Lê Duẩn Thành phố Đà Nẵng
Điện thoại: (84) 0511 3822 041 ; Email: dhdn@ac.udn.vn