基于LCC的无碱液体速凝剂经济效益分析——以白鹤滩水电站喷砼施工为例  

Economic Benefit Analysis of Alkali-free Liquid Accelerator Based on LCC:Taking the Concrete Spraying Construction of Baihetan Hydropower Station as an Example

作　　者：陈万明 CHEN Wan-ming(China Anneng Group Second Engineering Bureau Co.,Ltd.Shanghai Branch,Shanghai 200333,China)

机构地区：[1]中国安能集团第二工程局有限公司上海分公司,上海200333

出　　处：《价值工程》2020年第7期248-250,共3页Value Engineering

摘　　要：速凝剂主要使用在喷射混凝土施工中,以达到喷砼快速凝结,达到支护、封堵等效果的外加剂,广泛应用于公路、水利、矿山井巷等地下工程及应急抢修工程。目前在中小工程中使用的大多为传统粉状速凝剂,但是传统粉状速凝剂存在生产时环境污染严重、资源消耗高,施工时因碱量大而腐蚀性强,因干喷而扬尘大、回弹率高,混凝土强度低等问题。但无碱液体速凝剂较好的解决了上述问题,但因价格较高以及高昂的机械成本,其应用的范围较小。本文以在白鹤滩水电站的施工中使用的无碱液体速凝剂和传统粉状速凝剂为例,运用LCC(全生命周期成本)理论对两种速凝剂的经济效益进行比较分析,得出了无碱液体速凝剂的生命周期成本低于粉状速凝剂的生命周期成本的结论。Quick-setting admixtures are mainly used in sprayed concrete construction to achieve rapid setting of shotcrete,admixtures for support and plugging,etc.,and are widely used in highways,water conservancy projects,underground tunnels,and emergency repair projects.At present,most of the traditional powdery accelerators are used in small and medium-sized projects.However,the traditional powdery accelerators have serious environmental pollution during production,high resource consumption,strong corrosion due to large amount of alkali during construction,and dust due to dry spray,large,high rebound rate,low concrete strength and other problems.However,the alkali-free liquid quick-setting agent solves the above problems better,but due to the high price and high mechanical cost,its application range is small.This paper takes the alkali-free liquid accelerator and traditional powdery accelerator in the construction of Baihetan Hydropower Station as an example,and uses the LCC(life cycle cost)theory to compare and analyze the economic benefits of the two accelerators.The conclusion is that the life cycle cost of alkali-free liquid accelerators is lower than that of powdery accelerators.

关 键 词：LCC(全生命周期成本)理论 无碱液体速凝剂 经济效益分析 

分 类 号：F275.3[经济管理—企业管理]