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近几年来,在美国中西部的一些建筑设计中,采用一种抗碱性玻璃纤维增强的混凝土预制墙板。这种墙板与普通混凝土墙板相比,大大地减轻了自重。墙板预制时以手提式喷枪作为工具,对模板喷射一种掺有水泥体积2～4%的抗碱性玻璃纤维的水泥浆(抗碱作用是防止水泥中碱性腐蚀而降低玻璃纤维强度),然后,用手工辗压密实,待有一定强度,即成为一种单一墙板。厚度一般可做成3/8～1/2英寸(约10～13毫米),最薄的板子每平方米重仅19公斤。也可以制成
In recent years, in some architectural designs in the Midwestern United States, an alkali-resistant glass fiber reinforced concrete prefabricated wallboard has been used. This kind of wallboard greatly reduces its own weight compared with ordinary concrete wallboard. When the wall panel is prefabricated, a hand-held spray gun is used as a tool to inject a cement paste containing alkali-resistant glass fibers with cement volume of 2% to 4% on the template (anti-alkali action is to prevent alkali corrosion in the cement and reduce the strength of the glass fiber). , Then, using manual pressure compaction, to be a certain strength, that is to become a single wallboard. The thickness is generally 3/8 to 1/2 inch (about 10 to 13 millimeters), and the thinnest board weighs only 19 kilograms per square meter. Can also be made