甘肃省建设工程混凝土消耗量定额编制与研究

发布时间：2018-04-24 21:43

本文选题：混凝土消耗量 + 定额　；参考：《兰州理工大学》2013年硕士论文

【摘要】：定额是一定时期内技术水平与管理水平的反映,随着施工技术的发展与管理水平的提高,定额也需作相应的调整,应定期进行补充与修订。混凝土计价工作在工程建设中也启到了举足轻重的地位,如何合理、有效的编制混凝土计价定额就显得尤为重要。甘肃省建设工程混凝土消耗量定额已经使用7年之久了,这期间虽然定额对于工程建设起到了广泛的指导作用,但是随着时间的推移,新规范新标准的实施、混凝土市场和发展水平的进步、造价核算方式方法的改革等,混凝土定额修编已是迫在眉睫。混凝土的计价工作主要是对组成混凝土的各项原材料的计价,不同的混凝土配合比对计价有着决定性的影响。甘肃省地州市混凝土原材料的变化差异巨大,原材料砂源的细度模数变化从1.6到3.7不等,囊括了细、中、粗砂,从而造成了各个地区的混凝土配合比差异性巨大。该定额编制的思想是编制以兰州为基准的混凝土配合比,各个地区混凝土配合比参数确定拟在兰州地区的基础上作出相应调整。本文通过前期对甘肃省各地州市原材料进行摸底和调研,在各地州市中心试验室依据当地的砂、石原材料试配三组C25、C30、C40时卵碎石的混凝土配合比试验,后期在兰州试配不同细度模数下、不同粉煤灰掺合料比例下试配C25、C30、C40、C50时卵碎石的混凝土配合比试验。结合《普通混凝土配合比设计规程》(JGJ55-2011),确定混凝土配合比,并通过大量的试验进行验证、校核,从而确定混凝土中各影响因子之间的相互作用关系。研究内容如下： (1)研究不同的混凝土强度等级对水泥用量的影响； (2)研究不同的细度模数对水泥用量的影响； (3)研究混凝土强度相同时,不同比例的矿物掺合料下,水泥用量的变化。
[Abstract]:The quota is the reflection of the technical level and the management level in a certain period. With the development of the construction technology and the improvement of the management level, the quota should be adjusted accordingly. It should be supplemented and revised regularly. The concrete valuation work also plays an important role in the construction of the project. How to reasonably and effectively prepare the price quota for concrete It is particularly important that the concrete consumption quota of Gansu construction project has been used for 7 years. Although the quota has played a broad guiding role in the construction of the project, the implementation of new standard and new standard, the progress of the concrete market and development, the reform of the method and method of cost accounting have been used in this period. The revision of the fixed amount of soil is imminent.
The valuation work of concrete is mainly for the valuation of the raw materials that make up the concrete. Different concrete matching ratios have a decisive influence. The variation of concrete raw materials in Gansu Prefecture is very different. The fineness modulus of the raw material sand source varies from 1.6 to 3.7, including fine, medium and coarse sand, thus causing each other. The concrete mix ratio of the area is very different. The thought of the quota is to prepare the concrete mix ratio based on Lanzhou, and the concrete mix ratio parameters in each area are to be adjusted accordingly on the basis of the Lanzhou area.
Through the preliminary investigation and investigation of the raw materials of Gansu Prefecture and city in Gansu Province, this paper tries to match the concrete mix ratio test of three groups of C25, C30, C40 egg crushed stone in the test room of local city center according to the local sand and sand, in the city center test room of local state, and at the later stage in Lanzhou with different fineness modulus, when the mixture ratio of fly ash admixture is not matched with C25, C30, C40, C50. The concrete mix ratio test of the egg crushed stone, combined with the general concrete mix design specification (JGJ55-2011), determines the concrete mix ratio, and validates it through a large number of tests to determine the interaction between the influence factors in the concrete. The following research is as follows:
(1) to study the influence of different strength grades of concrete on cement dosage.
(2) to study the influence of different fineness modulus on cement dosage;
(3) to study the change of cement dosage under different proportions of mineral admixtures under the same strength of concrete.

【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU528

【参考文献】