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1)  existing concrete
既有混凝土
1.
According to the related national standards, codes and specifications, this article discussed the compressive strength evaluation methods of existing concrete, pointed out that the present provisions in related norms can not meet the construction practice, so the existing methods should be improved as soon as possible to make the concrete strength evaluation more standard and scientific.
根据国家有关标准、规范和规程,探讨了既有混凝土抗压强度的评定方法,以工程实例说明现有相关规定不能满足实际工程需要,应尽快完善既有混凝土抗压强度的评定方法,使混凝土抗压强度的评定规范化和科学化。
2.
The background engineering in this paper is the existing concrete structures under the natural chloride environment.
本论文以自然氯盐环境下的既有混凝土结构为研究背景。
3.
The chloride ions\' concentrations in existing concrete in tidal estuary environment of the Qiantang River are measured,the relation between erosion depths and concentrations of chloride ions in concrete is analyzed.
对钱塘江河口地区感潮环境下的既有混凝土芯样中的氯离子浓度进行测定,分析侵蚀深度与氯离子浓度的关系。
2)  existing reinforced concrete
既有钢筋混凝土
1.
Material aging and damage of existing reinforced concrete bridges are very complex processes which make the resistance random, fuzzy and time-variant, therefore the resistance development is a fuzzy stochastic process.
既有钢筋混凝土桥梁材料的老化与损伤情况复杂使其抗力同时具有随机性、模糊性和时变性是一个模糊随机过程。
3)  existing concrete bridge
既有混凝土桥梁
1.
Under the influence of loading,environment,material and service time,the existing concrete bridges structure performance can gradually deteriorate,which makes the actual reliability of the structure reduce than the reliability that is designed originally.
既有混凝土桥梁结构在荷载、环境、材料以及使用时间等因素的影响下,结构的性能会逐步劣化,结构性能的劣化使得结构的实际可靠度比原设计的可靠度降低。
4)  existing concrete structure
既有混凝土结构
5)  existing concrete beam bridges
既有混凝土梁桥
6)  existing concrete members
既有混凝土构件
补充资料:泵送混凝土
分子式:
CAS号:

性质:可用混凝土泵通过管道输送拌和物的混凝土。要求其流动性好,骨料粒径一般不大于管径的四分之一,需加入防止混凝土拌合物在泵送管道中离析和堵塞的泵送剂,以及使混凝土拌和物能在泵压下顺利通行的外加剂,减水剂、塑化剂、加气剂以及增稠剂等均可用作泵送剂。加入适量的混合材料(如粉煤灰等),可避免混凝土施工中拌和料分层离析、泌水和堵塞输送管道。

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