拔出法是使用专用机具,拉拔事先锚入混凝土的锚具,并拔出一小块混凝土,根据混凝土的极限抗拔力,确定其抗压强度的一种检测方法。锚具锚入混凝土的基本方式有两种。一种是先埋法,就是在浇筑混凝土时埋入锚具,待其硬化后再拔出锚具;另一种是后埋法,这种方法是在已硬化的混凝土上钻孔,用粘结剂(水泥砂浆或环氧砂桨等)把锚具埋入孔内,待粘结剂固化后再拔出锚具,或用一种具有膨胀或嵌固作用的锚具,锚入钻孔后立即拔出锚具。无论何种埋入方式,都 Pull-out method is the use of special equipment, pull anchors anchored in concrete in advance, and pull out a small piece of concrete, according to the ultimate pull-out force of concrete, determine its compressive strength of a test method. There are two basic ways in which anchors can be anchored into concrete. One is the first method of embedding, that is, when pouring concrete, embed the anchor, and then pull out the anchor when it is hardened; the other is the post-burial method. This method is to drill holes in the hardened concrete. The binder (cement mortar or epoxy sand paddle, etc.) is used to embed the anchors in the holes, and after the adhesive is solidified, the anchors are pulled out, or the anchor holes are used to anchor the holes by using an anchoring device with expansion or anchoring action. Pull out the anchor immediately afterwards. No matter what kind of embedding method,