🏗 Quy trình đổ mái chuẩn & đẹp
1️⃣ Chuẩn bị & kiểm tra cốp pha – giàn giáo
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Dựng cốp pha chắc chắn, đúng kích thước thiết kế.
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Kiểm tra độ kín khít, không hở mạch để tránh rò vữa.
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Hệ giàn giáo phải vững, chịu tải tốt và an toàn cho công nhân.
2️⃣ Gia công & lắp đặt thép
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Sử dụng thép đúng chủng loại, đường kính và tiêu chuẩn kỹ thuật.
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Buộc thép đúng khoảng cách, kê con kê để đảm bảo lớp bê tông bảo vệ ≥ 2cm.
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Kiểm tra vị trí thép chịu lực và thép mũ theo bản vẽ kết cấu.
3️⃣ Chuẩn bị vật liệu bê tông
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Sử dụng bê tông thương phẩm hoặc trộn tại chỗ theo đúng mác thiết kế (thường M200 – M300).
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Đảm bảo cát, đá, xi măng, nước sạch, không lẫn tạp chất.
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Kiểm tra độ sụt (slump test) để bê tông đủ độ dẻo khi thi công.
4️⃣ Tiến hành đổ bê tông mái
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Đổ liên tục từ xa đến gần, không để mạch ngừng.
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Dùng đầm dùi + đầm bàn để loại bỏ bọt khí, tăng độ đặc chắc.
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Kiểm soát độ dày lớp bê tông đúng theo thiết kế.
5️⃣ Xoa mặt & hoàn thiện
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Sau khi bê tông bắt đầu se mặt, tiến hành xoa phẳng bề mặt.
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Nếu mái cần chống nóng, chuẩn bị sẵn lớp xốp hoặc gạch chống nóng để thi công sau khi bê tông đạt cường độ.
6️⃣ Bảo dưỡng mái
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Che chắn tránh nắng, mưa trực tiếp trong 24h đầu.
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Duy trì tưới nước giữ ẩm liên tục 7–10 ngày để bê tông đạt cường độ tối đa.
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Chỉ tháo cốp pha khi bê tông đạt ≥ 70% cường độ thiết kế.
🎯 Ưu điểm thi công mái tại SHOME
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Bê tông đúng mác – đủ tuổi: đảm bảo độ bền trên 50 năm.
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Bề mặt phẳng, đẹp, dễ chống thấm và lát gạch.
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Thi công nhanh – an toàn, đúng tiến độ bàn giao.
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