中科聚峰廠家淺談溫度對混凝土攪拌機性能的影響？
溫度會對混凝土攪拌機的性能產生什么影響？中科聚峰廠家的技術人員指出，環(huán)境溫度低、水泥水化反應慢影響了混凝土攪拌機的強度增長。混凝土攪拌機制造商的試驗表明，當溫度降低1℃時，水泥的水化降低5%~7%左右。在1℃~0℃范圍內，水泥水化活性急劇下降，水化緩慢通常，當溫度低于0℃的某個范圍時，自由水將開始凍結。當溫度低到一定程度時，自由水將幾乎完全凍結成冰，導致水泥完全停止水化和硬化。
What is the effect of temperature on the performance of concrete mixer? Technical personnel of Zhongke Jufeng factory pointed out that low ambient temperature and slow hydration reaction of cement affected the strength growth of concrete mixer. The concrete mixer manufacturer's test shows that when the temperature is reduced by 1 ℃, the hydration of cement is reduced by about 5% ~ 7%. When the temperature is lower than 0 ℃, the free water will start to freeze. When the temperature is low to a certain extent, the free water will almost completely freeze into ice, resulting in the complete stop of hydration and hardening of cement.
當水轉化為固體冰時，其體積增加約9%，導致混凝土內部應力。溫度導致骨料和水泥顆粒相對位移，內部水分遷移到混凝土攪拌機的負溫度表面，在混凝土中形成冰骨料，造成局部結構損壞混凝土攪拌機制造商指出，新澆混凝土過早凍結將大大降低極限強度，強度損失率可能達到設計標志的50%，甚造成整體結構損壞。然而，當混凝土達到臨界強度后凍結時，混凝土的極限強度損失很小，不會發(fā)生整體結構損傷。降低冰點的范圍與防凍劑的類型和劑量或溶液的濃度有關。防凍劑的使用效果在很大程度上取決于溶液的濃度和混凝土在硬化過程中經歷的負溫度值。
When water is converted into solid ice, its volume increases by about 9%, resulting in internal stress of concrete. The temperature causes the relative displacement of aggregate and cement particles, and the internal moisture migrates to the negative temperature surface of the concrete mixer, forming ice aggregate in the concrete, causing local structural damage. The concrete mixer manufacturer points out that premature freezing of fresh concrete will greatly reduce the ultimate strength, and the strength loss rate may reach 50% of the design mark, and even cause damage to the overall structure. However, when the concrete reaches the critical strength and freezes, the ultimate strength loss of concrete is very small, and the overall structure damage will not occur. The range of freezing point reduction depends on the type and dosage of antifreeze or the concentration of solution. The effect of antifreeze depends largely on the concentration of the solution and the negative temperature experienced by the concrete during the hardening process.
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The above is about the influence of temperature on the performance of concrete mixer, I hope it can help you. If you want to know more, please click Zhongke Jufeng factory http://jbckj.cn Official website.
