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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Evaluation of Reinforcement Concrete Exposed to Soil Type SP Contaminated with Sulphates
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Electrochemical Evaluation of Reinforcement Concrete Exposed to Soil Type SP Contaminated with Sulphates

机译：暴露于硫酸盐污染的SP型钢筋混凝土的电化学评估

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The present research evaluates the electrochemical behaviour of concrete exposed to SP soil type, sandfrom marine environment and contaminated with 1, 2 and 3 % de MgSO4, this experimental setupsimulates what happens on the foundations of civil infrastructure as bridges, docks, highways, etc.,when they are built on contaminated soils with this aggressive agent due to discharges of wastewater,marine waters or areas polluted by agrochemicals. The concrete used in making specimens of studywas designed according to the ACI method 211.1, it was considered to design the concrete mixture a2 ratio w/c=0.65 (fc=250 kg/cm ), two types of cement, ordinary portland cement (CPC 30R) andsulphate-resisting cement (CPC 30R RS), in the specimens were embedded as reinforcement bars ofsteel AISI 1018 and Galvanized steel. Ecorr was evaluated according to the standard ASTM C-876-09and the corrosion kinetics Icorr it was monitored by the technique of Linear Polarization Resistance(LPR), according to standard ASTM G-59-97(2009). The results of Ecorr and Icorr correspond to 266days of exposition in specimens to SP soil type contaminated with MgSO4 indicating with increasingconcentration of aggressive agent to 3% it is considerably decreased the corrosion resistance of theconcrete specimens produced with sulphate resisting cement and reinforced with galvanized steel.
机译：本研究评估了暴露于SP土壤类型，海洋环境中的沙子以及被1、2和3％的MgSO4污染的混凝土的电化学行为，该实验装置模拟了在桥梁，码头，高速公路等民用基础设施上发生的情况。 ，因为它们是由于废水，海水或农用化学品污染的区域的排放而在这种侵蚀性物质污染的土壤上建造的。用于研究样品的混凝土是根据ACI方法211.1设计的，已考虑设计a2比w / c = 0.65（fc = 250 kg / cm）的混凝土混合物，两种水泥，普通硅酸盐水泥（CPC） 30R）和耐硫酸盐水泥（CPC 30R RS），作为AISI 1018钢和镀锌钢的钢筋嵌入试样中。根据标准ASTM C-876-09对Ecorr进行评估，并根据标准ASTM G-59-97（2009）通过线性极化电阻（LPR）技术对其腐蚀动力学Icorr进行监控。 Ecorr和Icorr的结果对应于266天暴露于受MgSO4污染的SP土壤类型的样本266天，表明随着侵蚀剂浓度增加至3％，显着降低了抗硫酸盐水泥和镀锌钢加固的混凝土样本的耐腐蚀性。

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