According to the causes of crack occurrence and the weather characteristics in the project area, it is key to prevent the cracks such as the plastic crack, dry crack and cold shrinkage crack.
根据混凝土面板产生裂缝的原因，并结合工程区的气候特点，认为控制面板的塑性收缩、干缩与冷缩裂缝是防止裂缝产生的重点。
Results indicate that the admixture can reduce dry shrinkage effectively, delay or reduce concrete's cracks, improve comprehensive strength, reduce bleeding ratio and enhance durability etc.
结果表明：JS J减缩剂能有效降低砂浆和混凝土的干缩，推迟和减少混凝土的开裂，适当提高砂浆和混凝土的强度，以及降低泌水率、提高耐久性等。
The types of those cracks are summarized as three kinds: plastic shrinkage cracking, dry shrinkage cracking and hydration heat cracking.
将引起混凝土裂缝的类型归纳为塑性收缩开裂 ，干燥收缩开裂 ，水化热开裂三种 ，并对其表象及成因进行了阐述。
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