Xây dựng cấp phối vữa sử dụng vật liệu phế thải tường xây chế tạo gạch không nung

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Tác giả: QUỐC TIẾN LÊ

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Xây dựng, 2023

Mô tả vật lý: tr.90

Bộ sưu tập: Báo, Tạp chí

ID: 341476

Thêm vào giỏ Liên kết toàn văn

Currently, the situation of illegal sand mining in Vietnam is causing frustration in public opinion. Uncontrolled exploitation is causing great consequences in terms of resource loss, riverbank erosion, crop damage and insecurity in the localities. Since the beginning of 2017 until now, many individuals have organized sand mining in the riverbeds of the Mekong Delta, causing many serious consequences, changing the flow, causing landslides and bank erosion. river. Moreover, the quality of river sand when put into use for construction is not strictly controlled, affecting the quality of the works. Besides, the situation of concrete waste, broken brick wall in the construction industry is very large. This is a dilemma for managers related to environmental pollution and to use these wastes effectively and at a low cost. In addition, Circular No.13/2017/TT-BXD stipulating the use of unburnt building materials in construction works has led to an increasing demand for unburnt bricks. The author conducts an experiment to build a norm for the distribution of materials for the control sample, the sample uses building wall waste material to replace sand at the percentage of 35%
50%
100% and samples with the addition of Geopolymer
proceed to shape solid bricks 40x80x180, evaluate the strength and water absorption of bricks. The article has practical significance, contributing to saving money, protecting the environment and making use of construction waste when applied in practice. Key words: Waste construction wall
crushed sand
unburnt bricks.Hiện nay, tình trạng khai thác cát trái phép tại Việt Nam đang gây bức xúc trong dư luận xã hội. Việc khai thác thiếu kiểm soát gây hậu quả lớn như thất thoát tài nguyên, sạt lở bờ sông, thiệt hại hoa màu và mất an ninh trật tự tại các địa phương. Từ đầu năm 2017 đến nay, nhiều cá nhân tổ chức khai thác cát tại các lòng sông khu vực Đồng bằng sông Cửu Long (ĐBSCL) đã gây ra nhiều hậu quả nghiêm trọng, làm biến đổi dòng chảy gây sạt lở,, xói mòn bờ sông. Hơn nữa, chất lượng cát sông khi đưa vào sử dụng xây dựng công trình không được kiểm soát chặt chẽ làm ảnh hưởng đến chất lượng công trình. Bên cạnh đó, tình trạng rác thải bê tông, tường xây gạch vỡ trong ngành Xây dựng là rất lớn. Đây là vấn đề nan giải đối với các nhà quản lý liên quan đến ô nhiễm môi trường và sử dụng rác thải này sao cho hiệu quả, ít tốn kém. Ngoài ra, Thông tư số13/2017/TT-BXD quy định sử dụng vật liệu xây không nung trong các công trình xây dựng đã giúp nhu cầu sử dụng gạch không nung ngày càng tăng cao. Trong nghiên cứu này tác giả tiến hành xây dựng định mức cấp phối vật liệu cho mẫu đối chứng, mẫu sử dụng vật liệu phế thải tường xây thay thế cát theo tỉ lệ phần trăm là 35%
50%
100% và mẫu có bổ sung Geopolymer
tiến hành tạo hình gạch đặc 40x80x180, đánh giá cường độ và độ hút nước của gạch. Bài báo có ý nghĩa thực tiễn, góp phần tiết kiệm kinh phí, bảo vệ môi trường và tận dụng nguồn phế thải xây dựng khi được áp dụng vào thực tiễn. Từ khoá: Phế thải tường xây
cát nghiền
gạch không nung

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