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(dāng)水轉(zhuǎn)化為固體冰時(shí)，其體積增加約9%，導(dǎo)致混凝土內(nèi)部應(yīng)力。溫度導(dǎo)致骨料和水泥顆粒相對(duì)位移，內(nèi)部水分遷移到混凝土攪拌機(jī)的負(fù)溫度表面，在混凝土中形成冰骨料，造成局部結(jié)構(gòu)損壞混凝土攪拌機(jī)制造商指出，新澆混凝土過(guò)早凍結(jié)將大大降低極限強(qiáng)度，強(qiáng)度損失率可能達(dá)到設(shè)計(jì)標(biāo)志的50%，甚造成整體結(jié)構(gòu)損壞。然而，當(dāng)混凝土達(dá)到臨界強(qiáng)度后凍結(jié)時(shí)，混凝土的極限強(qiáng)度損失很小，不會(huì)發(fā)生整體結(jié)構(gòu)損傷。降低冰點(diǎn)的范圍與防凍劑的類(lèi)型和劑量或溶液的濃度有關(guān)。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(guò)程中經(jīng)歷的負(fù)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.

以上是關(guān)于溫度對(duì)混凝土攪拌機(jī)的性能產(chǎn)生影響的相關(guān)內(nèi)容，希望對(duì)你們有所幫助，想要了解更多內(nèi)容歡迎點(diǎn)擊中科聚峰廠家http://pheenet.cn官網(wǎng)。

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