摘要
在南方地区，混凝土墙体拆模后的第一批裂缝是由于水泥水化热引起的温度应力造成的，而混凝土收缩引起的收缩应力与昼夜温差引起的温度应力的双重作用，则是导致后续裂缝的主要原因。为此，应采取留出伸缩余地、掺膨胀剂、使用木模、避免直接日照等措施。
The first batch cracks of concrete bodies in South China had been caused by temperature stresses of cement hydration heat.While the double-action of (1) expansion stress of concrete and (2) temperature stress of day and night's difference of temeperature had been mainly the cause of cracks. Therefore,their prevention measures are namely (1)preparing space for concrete expansion, (2)admixing of expansion agent (3)adoption of wood form work and (4)preventing of direct sun shine et al.
出处
《建筑技术》
北大核心
1997年第9期628-630,共3页
Architecture Technology
