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1)  form of sulfate attack
硫酸盐侵蚀类型
1.
Form of sulfate attack of concretes and mortars has been divided into 5 sats of form according to corrosion circumstance and mechanism of deterioration,including ettringite form,gypsum form,magnesium form,thaumasite form and salt crystallization form of sulfate attack.
硫酸盐侵蚀直接影响建筑结构的耐久性,不同侵蚀环境下硫酸盐侵蚀类型和机理不同。
2)  sulfate corrosion
硫酸盐侵蚀
1.
Based on BP neural network algorithm,utilizing the experimental data of concrete under sulfate corrosion as the training samples,the models are proposed for inside and outside predicting the corrosion depth of concrete,which consider the influence factors of the concentration of sulfate radical in solution,the tensile and compressive stress levels of concrete and the corrosion time.
基于BP神经网络算法,以硫酸盐侵蚀混凝土试验数据为训练样本,建立了考虑硫酸盐侵蚀溶液浓度、混凝土拉压应力水平和侵蚀时间等影响因素的硫酸盐侵蚀混凝土深度的内推与外推预测模型。
3)  sulfate attack
硫酸盐侵蚀
1.
Mechanism and model of sulfate attack on RCC with expansive agent;
含膨胀剂的碾压混凝土抗硫酸盐侵蚀机理与理论模型
2.
American test methods for evaluating the durability of cement based materials agianst external sulfate attack;
美国混凝土硫酸盐侵蚀试验方法评析
3.
Effects and mechanisms of mineral admixtures on sulfate attack of cement mortars;
矿物掺合料对水泥砂浆硫酸盐侵蚀的影响及机理
4)  Sulphate attack
硫酸盐侵蚀
1.
The overall aim of this study is to clarity the effect of limestone on anti sulphate attack of concrete.
研究了石灰石粉对混凝土抗硫酸盐侵蚀性能的影响。
2.
The paper aims to study the effect of fly ash on concrete to sulphate attack.
研究了粉煤灰对混凝土抗硫酸盐侵蚀性能的影响。
3.
Results show that paste containing ground limestone can be destroyed at the temperature of 0—10 ℃ by the sulphate attack of thaumasite form.
结果表明:掺石灰石粉的水泥石在0~10 ℃的温度范围内,可形成碳硫硅钙石的硫酸盐侵蚀破坏。
5)  sulphate erosion
硫酸盐侵蚀
1.
Influence of silica-fume on resistance of sulphate erosion for mortar;
硅粉掺合料对砂浆抗硫酸盐侵蚀性能的影响
2.
Preliminary study on the prediction of service life of high performance concrete in sulphate erosion resistance;
高性能混凝土抗硫酸盐侵蚀耐久寿命预测初探
3.
Mechanism and affecting factors of sulphate erosion in concrete;
混凝土的硫酸盐侵蚀机理及其影响因素
6)  sulphate resistance
抗硫酸盐侵蚀
1.
Validity study on sulphate resistance to concrete by sodium citrate;
柠檬酸钠对混凝土抗硫酸盐侵蚀的有效性研究
2.
The results showed that the sulphate resistance of three companion specimens was the same, but the resistance of finely-broken stone concrete test prism to sulphate attack was most obvious.
系统地比较了三种强度等级的棱柱体砂浆、棱柱体细石混凝土和立方体混凝土的抗硫酸盐侵蚀破坏性能,结果表明三种试验试样的抗硫酸盐侵蚀性能基本相同,但相对而言棱柱体细石混凝土对于硫酸盐侵蚀破坏最为敏感。
补充资料:羟胺硫酸盐、硫酸羟胺、硫酸胲
CAS : 10039-54-0
分子式: H8N2O6S
分子量: 164.14
熔点: 170℃
中文名称: 羟胺硫酸盐、硫酸羟胺、硫酸胲

英文名称: Hydroxylamine sulfate、Hydroxylamine, sulfate(2:1) (salt)、hydroxylamine, sulfate (2:1)、bis(hydroxylamine) sulfate、hydroxylamine neutral sulfate、hydroxylamine, sulfate、hydroxylamine, sulfate (2:1) (salt)、oxammonium sulfate、Hydroxylamine,sulfate(2:1)(salt)

性质描述: 无色或白色结晶。熔点约170℃(分解),沸点56.5℃,密度1.204g/cm3。溶于冷水、乙醇和甲醇。极易吸湿。羟胺性质很不稳定,在常温下逐渐分解,在较高温度下会爆炸,故通常将其制成比较稳定的硫酸盐和盐酸盐。其中以硫酸羟胺为最常用。

生产方法:
1.以甲乙酮和硫酸及氨反应,生成甲乙酮肟,然后与硫酸反应,经水解制得硫酸羟胺(结晶型)和甲乙酮和硫铵副产。
2.由亚硝酸钠和亚硫酸氢铵混合进行反应,于低温下通入二氧化硫使反应物吸收得羟胺二磺酸盐,再进行水解,制得硫酸羟胺。3.采用硫酸与硝基烃反应亦可制得硫酸羟胺。

用途: 用作还原剂、显影剂和橡胶硫化剂。该品是合成已内酰胺的重要原料。也是医药、农药的中间体,用于生产一系列异噁唑衍生物、磺胺药物和维生素B6、B12。衍生物肟或羟肟酸衍生物可用来生产农药杀虫剂、杀菌剂和除草剂。还可用于高分子合成原料和化合物的精制、聚合催化剂及化学分析试剂等。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条