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第一冶金建设公司矿山公司施工的铁路工程,采用了硫磺砂浆锚固混凝土轨枕道釘。硫磺砂浆由硫磺、砂、水泥和石腊组成。据铁道部门的技术要求,硫磺锚固体的抗压强度应不低于400kg/cm~2,试件抗拉强度应不小于4吨。开始,对硫酸砂浆配合比和锚固试块做了试验,试验结果如下表: 从试验结果说明,凡加石腊的试件抗压强度达不到技术要求。为了保证抗压强度要求,曾采用未加石腊的配合比施工。
First Metallurgical Construction Corporation mine construction company’s railway project, the use of sulfur mortar anchor concrete sleeper spike. Sulfur mortar consists of sulfur, sand, cement and paraffin. According to the technical requirements of the railway sector, the compressive strength of sulfur anchor should not be less than 400kg / cm ~ 2, the tensile strength of the specimen should not be less than 4 tons. At the beginning, the mortar mix ratio of sulfuric acid mortar and the anchoring test blocks were tested. The test results are shown in the following table. From the test results, the compressive strength of the mortar and paraffin specimens did not meet the technical requirements. In order to ensure compressive strength requirements, have not used the combination of paraffin construction.