中国最大矿石清洗精选生产基地
科技与品质同行!实现客户价值和利益最大化

电话咨询

PHONE CONSULTING

0371-55697714

15981850664

在线咨询

ONLINE CONSULTING
在线客服售后咨询
和我联系吧

 

海沙场淡化

泡沫混凝土砌块是一种新型的建筑材料,具有以下优点:

1、轻质高强,减轻建筑物负荷:干质密度320-1200kg/m3,是普通混凝土或砌块的1/5-1/8.   

2、良好的隔热、隔音性能:其导热系数0.06-0.16w/m.k,24cm厚的墙体隔音量为58dB,满足建筑外墙、分户墙隔热、隔音要求。  

3、抗震性好:由于泡沫混凝土砌块属多孔材料,具有较低的弹性模量,从而使其对震动冲击载荷有良好的吸收和分散作用,同时泡沫混凝土砌块质量较轻,有效减低建筑物的荷载,建筑物荷载越小,抗震能力越强。   

4、不开裂、使用寿命长:泡沫混凝土砌块不会出现开裂空鼓现象,使用时无需刷涂界面剂,抗老化性能突出,使用寿命长。

5、抗水性能好:泡沫混凝土材料吸水率低于20%,明显区别于其他墙体自保温材料。。


Having devoted in building material industry for over 15 years, Zhengzhou Huanqiu Heavy Industries Ltd possesses modern manufacturing capacity, mature technologies, high-end technical research and development insitution. Sea sand desalting is a new-type industry in mineral dressing, and considering that the river sand and artificial sand are restricted by region and of high price, sea sand will certainly become the dominant sand in building industries. The core of sea sand desalting produciton line is to adopt rational and effective desalting technology to separate the harmful substance from the sea sand and thereby the sea sand can reach the national standard of sand for building.

洗矿机现场

环球重工拥有现代生产车间,大型立车,滚齿机,自动焊,卷板机。公司拥有现代化标准厂房10000多平方米,员工200多名,其中工程师10名,技术人员28名。拥有完整、科学、质量管理体系,通过ISO9001国际质量体系认 CE欧盟质量认证,承接日产500T-5000T海沙淡化生产线,矿石洗石生产线,矿料精选等作业,现面向全国诚招各级加工代理。我公司秉着长远共赢的原则欢迎各界朋友的前来参观、考察、洽谈业务


Huanqiu Heavy Industries Ltd possesses modern production workshop, large vertical lathe, gear hobbing machine and plate bending roll. The company also own modern standard plant occupying a land of over 10,000m3, and more than 200 employees including 10 engineers and 28 technicists. With complete quality management system, and ISO9001 International Quality System Certification as well as CE Quality Certification, the company is able to undertake 500t-5,000t/d sea sand desalting production line, ore washing line and mineral aggregate selection line. Now the company is advertising for processing agents at all levels all ower China. Holding the principle of long-term win-win, our company welcome friends from all walk of life to visit, investigate and negotiate business.

洗矿机现场
洗矿机现场

海沙为什么不可以用在建筑上?

中国拥有漫长的海岸线,具有丰富的海砂资源,海沙虽然洁净,但是海砂不能直接被用于建筑中,主要是因为其含有两种有害物质:海砂中的含盐量主要来自海水,海水中硫酸盐含量折合SO2-4仅为Cl-的1/10左右,这样少量的硫酸盐对于混凝土及钢筋无明显有害作用,因此海砂含盐量主要是含氯盐的问题。混凝土空隙中的水分,通常以饱和Ca(OH)2形式存在,其中还含有一些NaOH和KOH,pH值约为12.5。这样的强碱性环境中,钢筋表面形成一种钝化薄膜,正是这种很薄的氧化膜层,使钢筋受到保护,不致于腐蚀。氯盐能破坏混凝土钢筋表面的碱性保护膜,而促使钢筋发生锈蚀。混凝土中钢筋不断锈蚀的结果,不但削弱了钢筋截面,而且由于锈蚀产物的膨胀作用而使混凝土保护层开裂、剥落,影响到结构的正常使用。氯盐对于预应力钢筋的危害性更大。另外,海砂中的氯盐还可能对混凝土拌合物有促进凝结硬化的作用(含盐量在0.2%~0.3%以上时比较明显);对于大体积混凝土则有初期温升较高的问题;使用含盐量较高的海砂的混凝土早期强度较高,但后期强度可能较低,海砂中的盐分还可能使混凝土的干燥收缩增加。总之,氯离子是导致混凝土中钢筋腐蚀的最为有害的物质。


China's long coastline provides abundant sea sand resource. Although the sea sand is clean and contains little mud, it cannot be directly used in buildings because it contains two kinds of hazardous substances: chloridion and organic matter, which influence the solidification structure of buildings and corrode the concrete. The salts in sea sand mainly come from seawater in which the SO2-4 (converted from sulfate) is only one-tenth of the Cl-. The sulfate is so little that it cannot damage the concrete or reinforcing steel bar, therefore the chloride is the main hazardous substances. Usually the moisture in the space between concrete exist in form of saturated Ca(OH)2, and a little NaOH and KOH, PH valve being 12.5. In such strong alkaline environment, a layer of passivation film will form on surface of reinforcing steel bar, and it is this thin oxide film that protect the reinforcing steel bar from being corroded. Chlorine salt will damage the alkaline protection film on the surface of concrete reinforcement, and corrode the reinforcing steel bar. The corrosion will damage the section of the concrete reinforcement, and the expansive action of the corrosion will make the concrete cover rupture and flake away, which will have an impact on the normal use of the structure. Chlorine salt do more harm to prestressed reinforcement. In addition, the chlorine salt in sea sand can also enhance setting and hardening of concrete mixture, which is obvious when the salt content is over 0.2%-0.3%; for mass concrete, it will make the temperature rise higher at preliminary stage, which makes the early strength of concrete much higher and the later strength lower. The salt in sea sand may also increase the drying shrinkage of the concrete. In brief, the chloride is the most harmful substance causing reinforcement corrosion in concrete.

洗矿机现场

海沙中贝壳水母有机物对建筑腐蚀影响?

贝壳类主要成分为CaCO3,贝壳,水母等类虽然为惰性材料,一般不会与水泥发生化学反应,但这些轻物质往往呈薄片状,表面光滑,本身强度很低,且较易沿节理错裂,因而与水泥浆的粘结能力很差。一般来说,当贝壳类等轻物质含量较多时,会明显使混凝土的和易性变差,使混凝土的抗拉、抗压、抗折强度及抗冻性、抗磨性、抗渗性等耐火性能均有所降低。因此必须对其含量加以限制。


China's long coastline provides abundant sea sand resource. Although the sea sand is clean and contains little mud, it cannot be directly used in buildings because it contains two kinds of hazardous substances: chloridion and organic matter, which influence the solidification structure of buildings and corrode the concrete. The salts in sea sand mainly come from seawater in which the SO2-4 (converted from sulfate) is only one-tenth of the Cl-. The sulfate is so little that it cannot damage the concrete or reinforcing steel bar, therefore the chloride is the main hazardous substances. Usually the moisture in the space between concrete exist in form of saturated Ca(OH)2, and a little NaOH and KOH, PH valve being 12.5. In such strong alkaline environment, a layer of passivation film will form on surface of reinforcing steel bar, and it is this thin oxide film that protect the reinforcing steel bar from being corroded. Chlorine salt will damage the alkaline protection film on the surface of concrete reinforcement, and corrode the reinforcing steel bar. The corrosion will damage the section of the concrete reinforcement, and the expansive action of the corrosion will make the concrete cover rupture and flake away, which will have an impact on the normal use of the structure. Chlorine salt do more harm to prestressed reinforcement. In addition, the chlorine salt in sea sand can also enhance setting and hardening of concrete mixture, which is obvious when the salt content is over 0.2%-0.3%; for mass concrete, it will make the temperature rise higher at preliminary stage, which makes the early strength of concrete much higher and the later strength lower. The salt in sea sand may also increase the drying shrinkage of the concrete. In brief, the chloride is the most harmful substance causing reinforcement corrosion in concrete.