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jie shao yi zhong shui ni qiu chang yong jiu xian de hua fa
Author(s): 
Pages: 63
Year: Issue:  2
Journal: China School Physical Education

Keyword:  水泥球场永久线水泥地面体育教师水泥砂浆工会干部步骤与方法水泥公路热胀冷缩水泥沙浆;
Abstract: 水泥球场以其经久耐用、易保养等特点,在我国工矿企业、学校被广泛采用。水泥球场的“线”如何能牢固、经久耐用却是工会干部和体育教师伤脑筋的问题。常用的油漆划线虽成本不高,但却费工费时、无法久用,现介绍一种永久线“划法”,供同行们借鉴。步骤与方法:一、在已竣工的水泥球场上将所需的线定点后,用“墨斗”(木匠用)将线弹清晰。二、用手推切割机(水泥公路用以切割伸缩缝的)沿线准确切人水泥地面15--2厘米深度D三、将切好的线中的水泥凿出槽,槽为粗糙面,清除掉废渣。四、用5见打水泥与细沙(比例为1:15),加人“炭黑粉”(50千克水泥约掺吕%,化工原料店有售),与水搅拌均匀成黑色水泥沙浆。五、用水冲净“线槽”
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