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      混凝土產生裂縫的原因和如何預防出現裂縫現象

      發布時間:2018/7/17 10:37:57 瀏覽次數:1733

      作為樓板施工單位,混凝土的質量決定了水泥地面硬化劑的施工質量,好的混凝土不僅在施工樓板中節省了材料,而且對樓板的施工質量也比較好,但往往除了新的混凝土外,更多的還是LES;炷恋耐庥^會出現一些問題,如混凝土外觀等。裂縫現象,在這里肯可以解釋混凝土裂縫的原因;混凝土裂縫主要是由于溫度和濕度的變化,混凝土是脆性的,攪拌時不攪拌甚至容易出現裂縫。


      混凝土產生裂縫的原因和如何預防出現裂縫現象


      當出現上述現象時,混凝土將被施工,混凝土硬化過程中會產生水化熱,內部溫度將繼續上升,導致裂縫。溫度的降低也會對混凝土表面產生很大的拉應力。當這些抗拉應力超過混凝土的抗裂能力時,就會發生裂縫。


      混凝土產生裂縫的原因和如何預防出現裂縫現象


      為了防止混凝土裂縫,我們應該從溫度開始,減少溫度產生的應力是一種有效的保護方法,那么如何降低溫度呢?我們需要提高配比,減少混凝土中的水泥用量,然后將凝結水與水混合,冷卻碎石。為了降低混凝土的溫度,還可以使用熱水澆筑混凝土,以減少澆筑厚度。嚴格控制水灰比可以防止混凝土開裂;炷恋氖┕λ嘤不瘎┑氖┕な亲詈玫,以提高地基的性能。




      As a floor construction unit, the quality of concrete determines the quality of cement ground hardened agent construction, good concrete in the construction floor not only save material, but also the construction of the floor quality is better, but often in addition to the new concrete, more or less concrete will have some problems, such as concrete appearance. Crack phenomenon, here Ken nable to explain the cause of cracks in the concrete; concrete cracks mainly because of the temperature and humidity changes, concrete is brittle, stirring when no stirring even easy to appear cracks.


      When the above phenomenon occurs, the concrete will be constructed, and the hydration heat will be generated during hardening of concrete, and the internal temperature will continue to rise, resulting in cracks. The reduction of temperature also causes great tensile stress on the concrete surface. When these tensile stresses exceed the crack resistance capability of concrete, cracks will occur.


      In order to prevent cracks in concrete, we should start from temperature first, reducing the stress produced by the temperature is an effective protection method, then how to reduce the temperature? We need to improve the ratio, reduce the amount of cement in concrete, and then mix the coagulant soil with water or water to cool the crushed stone. In order to reduce the temperature of concrete, we can also use hot water to pour concrete to reduce the thickness of pouring. The strict control of water cement ratio can prevent concrete from cracking. The construction of the concrete is best for the construction of cement ground hardening agent to enhance the ground capability.




      合肥泡沫混凝土官方網站:http://www.jiguanv.com/


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