Engineering, 18.06.2021 09:30 lexiissmartberysmart
Cho cấu kiện bê tông cốt thép chịu nén có f’c(Mpa), khối lượng riêng wc(T/m3
). Cấu kiện được thi
công trong môi trường không khí có độ ẩm H(%). Bảo dưỡng bằng hơi nước, khi cường độ bê tông đạt 70% theo thiết
kế, kết cấu chịu tải trọng thường xuyên gây ra ứng suất nén là 18Mpa.
a) Sau bao nhiêu ngày kết cấu bắt đầu chịu tải? (tính tròn ngày).
b) Biến dạng từ biến sau 600 ngày là bao nhiêu? Biết: Hệ số ks=1.025
Answers: 3
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Cho cấu kiện bê tông cốt thép chịu nén có f’c(Mpa), khối lượng riêng wc(T/m3
). Cấu kiện được thi
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