砂石充填工程技术交底.doc

砂石充填工程技术交底 砂石充填工程技术交底作者：佚名 时间：2017-1-3 浏览量： 一.工程名称: 二.分部工程:基础 三.分项工程名称:砂石充填 四.交底内容: .材料要求: 砂石地基的材料宜用颗粒级配良好、质地坚硬的中砂和粗砂和碎石,砂子中的石子含量不得大于50%,石子最大颗粒径不宜大于50mm,砂、石子中不得含有草根、垃圾等杂物,含泥量用作排水垫层时不应超过3%,无排水垫层含泥量不应超过5%。 2.施工要点: 施工前应先验槽,浮土、於泥应清扫干净,基槽的两侧应有一定的坡度,防止塌方,槽底和两侧如有低于垫层的沟、井等先应进行处理。 垫层的表面宜铺在同一标高上,如深度不同时,土面应挖成踏步成斜坡搭接,并按先深后浅的顺序施工。分段铺设时垫层接头应做阶梯搭接,每层错开米,并注意要充分捣实。 人工级配的砂石,应先将砂、石子搅拌均匀后再铺填捣实。 垫层应分层铺设,分层压实,每层铺设厚度及砂石最佳含水量及操作要点按以下要求办理:捣实方法用平板振捣器,每层铺设厚度20-25厘米,施工最佳含水量15-20%;平板振捣器的施工要点:用功率大于千瓦的平板振捣器,往复振捣,每层振捣5遍以上,振动器移动时,每行搭接1/3以保证振动面积衔接。 3.质量要求: 砂垫层每层夯实后的密实程度应达到中密标准,即孔隙比不应大于或干容重不小于/m3。 测定方法:系用容积不小于200立方厘米的环刀取样,如系砂石垫层则在砂石垫层中设置纯砂检查点,在同样条件下用环刀取样签定,现场简易测定方法是,将直径16mm长195厘米平头钢筋,自由落距50厘米贯入砂层,当贯入深度小于7厘米时为合格。 技术负责人: 交底人: 接受人: Measures for the routine management of moral education in Middle SchoolsMethod of conventional management of moral education in middle schoolFirst, the guiding ideology:School moral education is an organic whole of the whole education work, always adhere to the school adhere to the moral education, education for this product, and actively promote the quality education, the school building efficient curriculum system of moral education, moral education, improve the sense of attraction and appeal, enhance the moral education work for through and timeliness. Teach everyone, service education and management education, and school moral education work must be with family education and community education closely together, to form a concerted pattern, and strive to create a good atmosphere for education, and to promote the all-round development of students, to establish a scientific moral education full of vigor the For long-term mechanism.Two, the goal of moral education:To guide the students to form the correct world outlook, outlook on life, values, to cultivate students unity and mutual assistance, honest and trustworthy, law-abiding, good quality, hard work, set a good XX students ideological quality, psychological quality and image quality. The formation of e