NGHIÊN CỨU CHẾ TẠO VÀ ĐẶC TRƯNG TÍNH CHẤT VẬT LIỆU GEOPOLYME ĐÓNG RẮN TỪ BÙN ĐỎ VÀ CAO LANH
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Geopolyme; Polyme vô cơ; Bùn đỏ; Cao lanh.Tóm tắt
Trong nghiên cứu này, vật liệu geopolyme trên cơ sở bùn đỏ và cao lanh đã được nghiên cứu chế tạo nhằm tạo ra vật liệu với định hướng ứng dụng trong lĩnh vực xây dựng. Hỗn hợp cao lanh, bùn đỏ được trộn với dung dịch chất hoạt hóa kiềm, Ca(OH)2, nhiệt độ và thời gian dưỡng mẫu khác nhau tạo thành vật liệu geopolyme. Kết quả nghiên cứu cho thấy vật liệu geopolyme chế tạo được sau xử lý đóng rắn bùn đỏ có khả năng cho cường độ chịu nén cao nhất là ~21 MPa. Sự có mặt của Ca(OH)2 tạo ra thành phần C-S-H/C-A-S-H làm tăng cường độ chịu nén của vật liệu chế tạo được.
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