The History of Concrete 3000 BC – 1992
Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay. The Egyptians developed a substance more closely resembling modern concrete by using lime and gypsum as …
Among the ancient Assyrians and Babylonians, the bonding substance most often used was clay. The Egyptians developed a substance more closely resembling modern concrete by using lime and gypsum as …
Áp dụng hướng dẫn của TULAMDIY
Chia sẻ bổ ích mới cập nhật