毛乌素沙地砂混凝土力学性能实验研究
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摘要
我国是沙漠比较多的国家之一,随着西部地区基本建设规模的不断扩大,工程用砂的需求也越来越大,现有的中砂资源已经不能满足工程需求,从就地取材、降低工程造价、保护环境和合理开发利用自然资源的原则出发,在这些地区探索利用沙漠砂替代建筑用砂是必要的。本文以毛乌素沙漠南缘宁夏盐池地区沙地砂为切入点,通过实验研究,分析沙地砂替代率对不同龄期沙地砂混凝土抗压强度、抗劈裂强度和比能量的影响,给出了沙地砂替代率对沙地砂混凝土力学性能的影响规律,为沙漠砂混凝土的工程应用提供了指导和借鉴。
China is one of the major countries distributed widely with desert all over the world. With the increase of basic construction item in western district of China,more engineering sand is required. Ordinary medium sand resource no longer meets with the need of engineering. To meet the requirement of civil engineering construction for fine aggregate in these regions,decreasing the transportation of the ordinary fine aggregate,protecting natural environment,reasonably using local desert sand resources,reducing the construction cost,the engineering properties of the desert sand in these regions are investigated. The desert sand in this paper comes from the surfacing floating sand from Mu Us sandy land in Yanchi country,Ningxia. The influence of desert sand replacement ratio on the compressive strength,tensile strength and specific energy of desert sand concrete at different curing time is analyzed by experiment. The regulation between the mechanical properties of desert sand concrete and desert sand replacement ratio is also given out,which provides an advice and guide to the utility of desert sand in practice.
China is one of the major countries distributed widely with desert all over the world. With the increase of basic construction item in western district of China,more engineering sand is required. Ordinary medium sand resource no longer meets with the need of engineering. To meet the requirement of civil engineering construction for fine aggregate in these regions,decreasing the transportation of the ordinary fine aggregate,protecting natural environment,reasonably using local desert sand resources,reducing the construction cost,the engineering properties of the desert sand in these regions are investigated. The desert sand in this paper comes from the surfacing floating sand from Mu Us sandy land in Yanchi country,Ningxia. The influence of desert sand replacement ratio on the compressive strength,tensile strength and specific energy of desert sand concrete at different curing time is analyzed by experiment. The regulation between the mechanical properties of desert sand concrete and desert sand replacement ratio is also given out,which provides an advice and guide to the utility of desert sand in practice.
引文
[1]侯力,左伟清.新编社会学[M].广州:华南理工大学出版社,2002.
[2]杨红霞,闫竹玲,刘雅君.陕北沙漠特细砂混凝土性能的实验研究[J].水泥与混凝土,2005(1):6-8.
[3]Guoxue Zhang,Jianxia Song,Jiansen Yang,etc.Performance of mortar and concrete made with a fine aggregate of desert sand[J].Building and Environment,2006,41(11):1478-1481.
[4]张德媛.毛乌素沙漠风积砂工程物理特性研究[D].西安:长安大学,2009.
[5]张财,吴爱芹.非洲撒哈拉沙漠特细砂混凝土配合比应用研究[J].黑龙江交通科技,2007(5):15-16.
[6]陈美美,宋建夏,赵文博,等.掺粉煤灰、腾格里沙漠砂混凝土力学性能的研究[J].宁夏工程技术,2011(1):61-63.
[7]JGJ55—2000普通混凝土设计规程[S].
[8]GB/T 50081—2002普通混凝土力学性能实验方法标准[S].
[2]杨红霞,闫竹玲,刘雅君.陕北沙漠特细砂混凝土性能的实验研究[J].水泥与混凝土,2005(1):6-8.
[3]Guoxue Zhang,Jianxia Song,Jiansen Yang,etc.Performance of mortar and concrete made with a fine aggregate of desert sand[J].Building and Environment,2006,41(11):1478-1481.
[4]张德媛.毛乌素沙漠风积砂工程物理特性研究[D].西安:长安大学,2009.
[5]张财,吴爱芹.非洲撒哈拉沙漠特细砂混凝土配合比应用研究[J].黑龙江交通科技,2007(5):15-16.
[6]陈美美,宋建夏,赵文博,等.掺粉煤灰、腾格里沙漠砂混凝土力学性能的研究[J].宁夏工程技术,2011(1):61-63.
[7]JGJ55—2000普通混凝土设计规程[S].
[8]GB/T 50081—2002普通混凝土力学性能实验方法标准[S].