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钢纤维检测
[来源:http://www.hcxtsg.com] [作者:567zx] [日期:19-03-22] [浏览次数:]

钢纤维检测
Steel Fiber Detection
1、钢纤维的抗拉强度检验,要求其抗拉强度不低于380MPa;
1. Testing the tensile strength of steel fibers requires that the tensile strength of steel fibers should not be less than 380 MPa.
2、钢纤维的抗弯拆性能,钢纤维应能经受直径3㎜钢棒弯拆90°不断,每批次检验不少于10根;
2. Bending and disassembly resistance of steel fibers, steel fibers should be able to withstand bending and disassembly of steel rods with diameter of 3_90 degrees continuously, and not less than 10 steel rods should be inspected in each batch.
3、杂质含量,钢纤维表面不得有油污,不得镀有有害物质或影响钢纤维与混凝土粘接的杂质。
3. Impurity content, steel fiber surface shall not be oil stain, no harmful substances or impurities affecting the bonding between steel fiber and concrete.
4、钢纤维的长度偏差不应超过标准长度的10%,每批次至少随机抽查10根以上;
4. The length deviation of steel fibers should not exceed 10% of the standard length. At least 10 fibers should be randomly sampled in each batch.
5、钢纤维的直径或等效直径合格率不得低于90%,可采取重量法检验,每批次抽检100根,用天平称量,卡尺测其长度,要求得到的等效平均值满足规定;
5. The qualified rate of diameter or equivalent diameter of steel fibers shall not be less than 90%. It can be checked by gravimetric method. 100 pieces of steel fibers can be sampled in each batch. The length of steel fibers can be measured by balance and caliper. The required equivalent average value meets the requirements.
原材料的检验:
Inspection of raw materials:
必须满足上述原材料的质量控制标准,应按照公路工程施工技术规范的要求进行检验。
The quality control standards of the above raw materials must be met and should be inspected in accordance with the requirements of the technical specifications for highway engineering construction.
钢纤维混凝土的检验:
Inspection of steel fiber reinforced concrete:
应重点检验钢纤维混凝土的和易性、塌落度和水灰比等,同时必须现场目检钢纤维在混凝土的分布情况,
The workability, collapse degree and water cement ratio of steel fiber reinforced concrete should be emphatically examined. At the same time, the distribution of steel fiber in concrete must be inspected by visual inspection on site.
发现有钢纤维结团现象应延长拌和时间
The mixing time should be prolonged when the phenomenon of steel fiber agglomeration is found.

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