Bê tông... lõi ngô
Thay vì xi măng cát sỏi thông thường, Phan Huỳnh Phương, sinh viên Khoa Kỹ thuật xây dựng, Đại học Bách khoa TPHCM, đã dùng lõi ngô qua chế biến để giảm tải trọng của bê tông.
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