CAJ | 학술논문

在分析混凝土开裂的危害和产生原因的基础上,提出裂缝控制新技术.采用双亲性单分子膜,减少混凝土早期的水分蒸发,抑制混凝土早期因失水太快而产生的塑性收缩裂缝;采用减水与减缩共同作用,控制混凝土壳体及薄壁结构的早期开裂;采用调控水泥水化过程中的放热量,提高大体积混凝土的温控能力;采用遥爪聚合型增韧剂,增加混凝土的韧性,减少混凝土的脆性开裂.
재분석혼응토개렬적위해화산생원인적기출상,제출렬봉공제신기술.채용쌍친성단분자막,감소혼응토조기적수분증발,억제혼응토조기인실수태쾌이산생적소성수축렬봉;채용감수여감축공동작용,공제혼응토각체급박벽결구적조기개렬;채용조공수니수화과정중적방열량,제고대체적혼응토적온공능력;채용요조취합형증인제,증가혼응토적인성,감소혼응토적취성개렬.
@@@@ Concrete cracking is a very popular problem throughout the civil engineering construction. In this paper,the harms and causes of concrete crack were analyzed first. Thereafter,new strategies for control cracking were proposed. An amphiphilic monolayer was introduced to reduce the evaporation rate and inhibit plastic shrinkage cracking of early-age concrete. A new chemical admixture with combined effect of water reduc-tion and shrinkage reduction was developed for decreasing cracking risk of shell structure as well as thin-walled structure. Based on the regulation of early age hydration of cement,a new technology was introduced for impro-ving temperature control effect of mass concrete. At last,a telechelic toughening material was also recommended to improve the toughness of concrete and thus reduce its brittleness.