为了提高马尾松胶合板的阻燃性能,以膨涨型聚氨酯防火涂料为研究对象,采用美国阿特拉斯(ATLA S)公司生产的HRR3热释放率系统和配合HC-2氧指数测定仪、XSHF-1防火涂料(小室法)等先进阻燃检测设备,按照美国航空标准(FAA)测试试样,研究阻燃...为了提高马尾松胶合板的阻燃性能,以膨涨型聚氨酯防火涂料为研究对象,采用美国阿特拉斯(ATLA S)公司生产的HRR3热释放率系统和配合HC-2氧指数测定仪、XSHF-1防火涂料(小室法)等先进阻燃检测设备,按照美国航空标准(FAA)测试试样,研究阻燃剂(成炭剂、脱水炭化催化剂、发泡剂)不同添加量对马尾松胶合板阻燃性能的影响。结果表明:当阻燃剂按80%的比例加入时,马尾松胶合板的阻燃性能最好,试件的氧指数值显著增大,最高热释放率、2 m in总热释放量和5 m in内总热释放量显著降低。展开更多
Rubblization technique has been extensively used to repair the damaged concrete pavement and has proven successful in developed countries like the US and Europe. It has not been fully adopted in developing region like...Rubblization technique has been extensively used to repair the damaged concrete pavement and has proven successful in developed countries like the US and Europe. It has not been fully adopted in developing region like the Middle East and this paper presents the design and construction challenges posed while assessing damaged concrete runway in empty quarter of Saudi Arabia. <span style="font-family:Verdana;">A number of design options for repairs for runway pavement were consi</span><span style="font-family:Verdana;">dered and rubblization was chosen as a preferred option for repair. This paper includes the consideration for the assessment and adoption of the concrete rubblized modulus value using the falling weight deflectometer, optimization </span><span style="font-family:Verdana;">of the tests for the whole runway using the Heavy Weight Deflectometer</span><span style="font-family:Verdana;"> HWD testing to replace pits, safely working around the utilities, reasonable assumption of drop height of the pavement and installation of utility conduits in the rubblized layer. Findings of the paper demonstrates resolving</span><span><span><span style="font-family:;" "=""> </span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">technical issues which are not very well covered in the Federal Aviation Authority (FAA) EB-66 such as the additional test strips, minimum areas of rubblization for assessment using test pits, drop in the height of concrete surface and fixing of utilities in rubblized pavement. The case study demonstrates that the rubblization can be successfully carried out in remote locations like empty quarter of Saudi Arabia with carefully carried out detailed site investigations, adopt</span><span style="font-family:Verdana;">ing correct assumed design rubblization modulus, quality control using </span><span style="font-family:Verdana;">HWD, protection of utilities while rubblizing and use of polymer modified asphalt for successful project deployment.</span></span></span></span>展开更多
美国民航安全管理体系法规层级分为联邦航空法规(14CFR)、联邦航空规章(FAR)、命令(Order)和咨询通告(AC)。美国在其民航法规体系的命令(Order)层级中明确了针对联邦航空组织(FAA Organization)、机场办公室(ARP)和航空安全组织(AVS)等...美国民航安全管理体系法规层级分为联邦航空法规(14CFR)、联邦航空规章(FAR)、命令(Order)和咨询通告(AC)。美国在其民航法规体系的命令(Order)层级中明确了针对联邦航空组织(FAA Organization)、机场办公室(ARP)和航空安全组织(AVS)等民航行政机关的安全管理体系(SMS)立法要求,分别是Order-8000.369《安全管理体系》、Order-5200.11A《美国联邦航空局机场安全管理体系》和Order VS 8000.367C《航空安全组织的安全管理体系要求》。对比上述三部立法的发展历程、适用范围、发布机构和内容的框架等要求,发现所制定的命令适用对象均隶属于美国联邦航空局(FAA),内容上均包含总则、SMS四大支柱等共同点,但三部命令在同一内容上包含的要素不相同等异同。展开更多
文摘为了提高马尾松胶合板的阻燃性能,以膨涨型聚氨酯防火涂料为研究对象,采用美国阿特拉斯(ATLA S)公司生产的HRR3热释放率系统和配合HC-2氧指数测定仪、XSHF-1防火涂料(小室法)等先进阻燃检测设备,按照美国航空标准(FAA)测试试样,研究阻燃剂(成炭剂、脱水炭化催化剂、发泡剂)不同添加量对马尾松胶合板阻燃性能的影响。结果表明:当阻燃剂按80%的比例加入时,马尾松胶合板的阻燃性能最好,试件的氧指数值显著增大,最高热释放率、2 m in总热释放量和5 m in内总热释放量显著降低。
文摘Rubblization technique has been extensively used to repair the damaged concrete pavement and has proven successful in developed countries like the US and Europe. It has not been fully adopted in developing region like the Middle East and this paper presents the design and construction challenges posed while assessing damaged concrete runway in empty quarter of Saudi Arabia. <span style="font-family:Verdana;">A number of design options for repairs for runway pavement were consi</span><span style="font-family:Verdana;">dered and rubblization was chosen as a preferred option for repair. This paper includes the consideration for the assessment and adoption of the concrete rubblized modulus value using the falling weight deflectometer, optimization </span><span style="font-family:Verdana;">of the tests for the whole runway using the Heavy Weight Deflectometer</span><span style="font-family:Verdana;"> HWD testing to replace pits, safely working around the utilities, reasonable assumption of drop height of the pavement and installation of utility conduits in the rubblized layer. Findings of the paper demonstrates resolving</span><span><span><span style="font-family:;" "=""> </span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;">technical issues which are not very well covered in the Federal Aviation Authority (FAA) EB-66 such as the additional test strips, minimum areas of rubblization for assessment using test pits, drop in the height of concrete surface and fixing of utilities in rubblized pavement. The case study demonstrates that the rubblization can be successfully carried out in remote locations like empty quarter of Saudi Arabia with carefully carried out detailed site investigations, adopt</span><span style="font-family:Verdana;">ing correct assumed design rubblization modulus, quality control using </span><span style="font-family:Verdana;">HWD, protection of utilities while rubblizing and use of polymer modified asphalt for successful project deployment.</span></span></span></span>
文摘美国民航安全管理体系法规层级分为联邦航空法规(14CFR)、联邦航空规章(FAR)、命令(Order)和咨询通告(AC)。美国在其民航法规体系的命令(Order)层级中明确了针对联邦航空组织(FAA Organization)、机场办公室(ARP)和航空安全组织(AVS)等民航行政机关的安全管理体系(SMS)立法要求,分别是Order-8000.369《安全管理体系》、Order-5200.11A《美国联邦航空局机场安全管理体系》和Order VS 8000.367C《航空安全组织的安全管理体系要求》。对比上述三部立法的发展历程、适用范围、发布机构和内容的框架等要求,发现所制定的命令适用对象均隶属于美国联邦航空局(FAA),内容上均包含总则、SMS四大支柱等共同点,但三部命令在同一内容上包含的要素不相同等异同。
