土建工程常用材料试验取样方法.rar

土建工程常用材料试验取样方法  
名称 (抽)取样单位 (抽）取样数量 试样尺寸
*砼立方体抗压强度 1.每拌制100盘且不超过100立方同配合比砼                            2.每工作班同配合比不足100盘时                                                3. 每一现浇层同配合比砼                                                   4.同一单位工程每一验收项目中同配合比砼 5.当一次连续浇筑超过1000m3时，同一配合比的混凝土每200m3取样不得少于一次 不少于于1组 150*150*150 100*100*100        3块/组
*砌筑砂浆 每一楼层或250立方砌体 同标号、同配合比不少于1组 70.7*70.7*70.7     6块/组
*热轧钢筋 每批重量不大于60T,每批应由同一牌号，同一炉罐号，同一交货状态的钢筋组成 拉伸2根         冷弯2根 550毫米／根  (5d+200mm)      250毫米/根  (5d+150mm)
*电弧焊 1.工厂焊接，以300个同类型接头（同钢筋级别、同接头形式）为一批。                                        2.现场焊接，以每一楼层中300个同类型接头（同级钢筋级别、同接头形式、同焊接位置）作为一批，不足300个时，仍作为一批。 拉伸3个 焊接长度的两端各加200毫米
*水泥 以同一水泥厂，同品种、标号、批号、同期到达的水泥不超过200顿为一个取样单位，

Sampling methods used in civil engineering materials testing
Name (pumping) sampling units (pumping) the number of sample size sampling
* Compressive strength of a concrete cube. Per 100 without mixing with more than 100 cubic Mix Concrete 2. Per work shift with less than 100 when compared with 3. Each cast layer of concrete with the mix 4. The same unit of work acceptance of each project with Concrete Mix 5. When a continuous casting more than 1000m3, the same mix of concrete not less than once per 200m3 sample in a group of not less than 150 * 150 * 150 100 * 100 * 100 3 / group
* Mortar or 250 cubic meters each floor with the label of masonry, with at least one group with more than 70.7 * 70.7 * 70.7 6 / group
* Each batch of hot-rolled steel weighing not more than 60T, each batch should be the same grade, the same furnace tank number, the same delivery, the composition of the state of the tensile steel cold-formed 2 2 550 mm / root (5d +200 mm) 250 毫米/ root (5d +150 mm)
* Arc Welding 1. Factory welded to the same type of connector 300 (with bar-level, with the joint form) as a group. 2. Spot welding, to each floor of the same type of connector 300 (equivalent steel grade, with the joint form, with the welding position) as a group, less than 300, still as a group. Stretching three weld length plus 200 mm each end
* Cement the same cement, the same variety, grade, batch number, the same period to reach no more than 200 ton of cement as a sampling unit,