shrinkage crack

Temperature and shrinkage crack of huge concrete can destruct concrete structure, so it is important to control the crack.

大体积混凝土结构的温度与收缩裂缝对混凝土结构具有破坏作用，控制裂缝的产生，十分重要。

On the basis of summarizing the latest research at home and abroad, this paper puts forward that cement stabilizing aggregate of dense framework type can decrease the shrinkage crack and raise the road performance of cement stabilizing aggregate base course.

综合国内外相关研究，提出应用骨架密实型水泥稳定碎石，可减少基层收缩裂缝，提高水泥稳定碎石基层使用性能。

An underground parking garage is of a super-sized structure. Some measures such as setting embedded joints, using UEA shrinkage-compensating concrete and setting full-length temperature reinforcement were adopted to achieve anti-crack and anti-seepage effects.

某小区单层地下车库为超长超宽结构，通过采取设置后浇膨胀加强带、采用UEA补偿收缩混凝土、设置通长温度筋，达到抗裂抗漏的效果。

The addition of polypropylene fiber decreases the shrinkage ratio of mortar and increases its tensile strength, crack energy, and the max strain, i.e. its toughness rises and brittleness falls.

聚丙烯纤维使水泥砂浆收缩率降低，抗折强度／抗压强度提高，最大变形量与断裂能增大，即使砂浆韧性提高、脆性降低。

Unbound aggregate base can efficiently retard the reflexion of cracks to asphalt pavement surface, which is aroused by the shrinkage crack of semi-rigid base in the inverted structure.

半刚性基层沥青路面作为过渡层时，可以有效改善半刚性基层收缩裂缝的反射裂缝的发生。

The study was taken an oil sump as an example to analyze crack defect of permanent mold aluminum casting with thin thickness, deep cavity and large plane, and two causes, thermal stress and shrinkage stress during casting solidification.

以油底壳为例，分析了壁薄、深型腔、大平面铝合金金属型重力铸件，产生裂纹缺陷的原因，确定是合金凝固时期的热应力和收缩应力所致。

The gas hole , shrinkage cavity and crack were eliminated through up-grading technology.

并且改进工艺,以消除气孔 、 收缩和裂纹.

Marly crack and deterioration of many bridge deck overlays have been attributed to the traffic load, nature factor and high thermal or shrinkage stress development in the concrete.

混凝土桥面铺装在交通荷载、自然因素、温度与收缩应力综合作用下，普遍出现了早期开裂与破坏。