泡沫混凝土砌塊是一種新型的建筑材料，具有以下優(yōu)點： 1、輕質高強，減輕建筑物負荷：干質密度320-1200kg/m3，是普通混凝土或砌塊的1/5-1/8. 2、良好的隔熱、隔音性能：其導熱系數0.06-0.16w/m.k，24cm厚的墻體隔音量為58dB，滿足建筑外墻、分戶墻隔熱、隔音要求。 3、抗震性好：由于泡沫混凝土砌塊屬多孔材料，具有較低的彈性模量，從而使其對震動沖擊載荷有良好的吸收和分散作用，同時泡沫混凝土砌塊質量較輕，有效減低建筑物的荷載，建筑物荷載越小，抗震能力越強。 4、不開裂、使用壽命長：泡沫混凝土砌塊不會出現(xiàn)開裂空鼓現(xiàn)象，使用時無需刷涂界面劑，抗老化性能突出，使用壽命長。 5、抗水性能好：泡沫混凝土材料吸水率低于20%，明顯區(qū)別于其他墻體自保溫材料。。
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. |
環(huán)球重工擁有現(xiàn)代生產車間，大型立車，滾齒機，自動焊，卷板機。公司擁有現(xiàn)代化標準廠房10000多平方米，員工200多名，其中工程師10名，技術人員28名。擁有完整、科學、質量管理體系，通過ＩＳＯ９００１國際質量體系認 CE歐盟質量認證，承接日產500T-5000T海沙淡化生產線，礦石洗石生產線，礦料精選等作業(yè)，現(xiàn)面向全國誠招各級加工代理。我公司秉著長遠共贏的原則歡迎各界朋友的前來參觀、考察、洽談業(yè)務
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. |
海沙為什么不可以用在建筑上？ 中國擁有漫長的海岸線，具有豐富的海砂資源，海沙雖然潔凈，但是海砂不能直接被用于建筑中，主要是因為其含有兩種有害物質：海砂中的含鹽量主要來自海水，海水中硫酸鹽含量折合SO2-4僅為Cl-的1/10左右，這樣少量的硫酸鹽對于混凝土及鋼筋無明顯有害作用，因此海砂含鹽量主要是含氯鹽的問題。混凝土空隙中的水分，通常以飽和Ca(OH)2形式存在，其中還含有一些NaOH和KOH，pH值約為12.5。這樣的強堿性環(huán)境中，鋼筋表面形成一種鈍化薄膜，正是這種很薄的氧化膜層，使鋼筋受到保護，不致于腐蝕。氯鹽能破壞混凝土鋼筋表面的堿性保護膜，而促使鋼筋發(fā)生銹蝕�；炷林袖摻畈粩噤P蝕的結果，不但削弱了鋼筋截面，而且由于銹蝕產物的膨脹作用而使混凝土保護層開裂、剝落，影響到結構的正常使用。氯鹽對于預應力鋼筋的危害性更大。另外，海砂中的氯鹽還可能對混凝土拌合物有促進凝結硬化的作用(含鹽量在0.2%～0.3%以上時比較明顯)；對于大體積混凝土則有初期溫升較高的問題;使用含鹽量較高的海砂的混凝土早期強度較高，但后期強度可能較低，海砂中的鹽分還可能使混凝土的干燥收縮增加�？傊�，氯離子是導致混凝土中鋼筋腐蝕的最為有害的物質。
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. |
海沙中貝殼水母有機物對建筑腐蝕影響？ 貝殼類主要成分為CaCO3，貝殼，水母等類雖然為惰性材料，一般不會與水泥發(fā)生化學反應，但這些輕物質往往呈薄片狀，表面光滑，本身強度很低，且較易沿節(jié)理錯裂，因而與水泥漿的粘結能力很差。一般來說，當貝殼類等輕物質含量較多時，會明顯使混凝土的和易性變差，使混凝土的抗拉、抗壓、抗折強度及抗凍性、抗磨性、抗?jié)B性等耐火性能均有所降低。因此必須對其含量加以限制。
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. |
