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橡(xiang)胶止(zhi)(zhi)水(shui)(shui)(shui)环因具有吸水(shui)(shui)(shui)膨(peng)(peng)胀(zhang)性能，因其外形为圆形，所以也叫(jiao)膨(peng)(peng)胀(zhang)橡(xiang)胶圈(quan)。近些年来，橡(xiang)胶止(zhi)(zhi)水(shui)(shui)(shui)环作为地下室底(di)板(ban)(ban)与桩(zhuang)头钢(gang)筋处防水(shui)(shui)(shui)材(cai)料得到(dao)广泛使(shi)用(yong)，遇水(shui)(shui)(shui)膨(peng)(peng)胀(zhang)止(zhi)(zhi)水(shui)(shui)(shui)环特点是遇水(shui)(shui)(shui)后通过自身材(cai)质吸水(shui)(shui)(shui)，使(shi)止(zhi)(zhi)水(shui)(shui)(shui)环自身体(ti)积变大，通过膨(peng)(peng)胀(zhang)来挤密(mi)底(di)板(ban)(ban)桩(zhuang)头处裂缝渗漏(lou)水(shui)(shui)(shui)，来实现底(di)板(ban)(ban)桩(zhuang)头钢(gang)筋处的防水(shui)(shui)(shui)效(xiao)果(guo)。