Nghiên cứu sử dụng tro bay và xỉ lò cao nghiền mịn trong sản xuất bê tông bọt

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Đình Thi Lưu, Thị Hồng Mai, Thị Hiền Trịnh

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học Kỹ thuật Thủy lợi và Môi trường, 2022

Mô tả vật lý: tr.12

Bộ sưu tập: Metadata

ID: 331531

Thêm vào giỏ Liên kết toàn văn

Để xử lý một phần chất thải rắn trong công nghiệp và tạo ra vật liệu nhẹ có khả năng cách nhiệt tốt, nghiên cứu này sử dụng tro bay và xỉ lò cao nghiền mịn trong sản xuất bê tông bọt. Sáu hỗn hợp bê tông bọt được thiết kế với tỷ lệ nước/chất kết dính bằng 0,22, tro bay và xỉ lò cao nghiện mịn được sử dụng thay thế 20-30% xi măng, và sử dụng các hàm lượng bọt khác nhau để tạo ra các mẫu bê tông có tỷ trọng khác nhau. Các đặc tính kỹ thuật của bê tông bọt được thí nghiệm bao gồm: khối lượng thể tích, cường độ chịu nén, vận tốc truyền xung siêu âm, độ hút nước và độ truyền nhiệt. Kết quả thí nghiệm cho thấy khối lượng thể tích khô có ảnh hưởng lớn đến các đặc tính kỹ thuật của bê tông bọt. Tương quan giữa các đặc tính kỹ thuật của bê tông bọt và khối lượng thể tích khô của nó được thành lập, giúp các kỹ sư có thể thiết kế được các mẫu bê tông có trọng lượng, cường độ và các thông số kỹ thuật khác theo yêu cầu sử dụng.To treat a part of industrial wastes and create a lightweight material with good thermal insulation, the objective of this study is to investigate the use of fly ash and ground granulated blast furnace slag (GGBFS) in producing foamed concrete. Six foamed concrete mixtures were designed with a water-tobinder ratio of 0.22, fly ash and GGBFS were used to replace 20-30% cement. The various foam content was used to produce foamed concrete with different densities. Engineering properties of foamed concrete including unit weight, compressive strength, ultrasonic pulse velocity (UPV), thermal conductivity, and water absorption were investigated. Test results indicated that dry unit weight has a strong effect on the engineering properties of foamed concrete. The correlations between the engineering properties of foamed concrete and its dry unit weight were established to help engineers for designing a foamed concrete with unit weight, compressive strength, and other properties according to practice requirements.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR