山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2015年
16期
104-105
,共2页
再生混凝土%取代率%龄期%湿度
再生混凝土%取代率%齡期%濕度
재생혼응토%취대솔%령기%습도
recycled concrete%replacement ratio%age%humidity
通过总结再生混凝土耐久性的影响因素,得出了不同因素对再生混凝土耐久性的影响特征。在相同配合比和再生骨料品质的情况下,混凝土的耐久性随着再生骨料取代率的增加而降低,但随着龄期的增加而增强;再生骨料中所含有的湿度对新拌混凝土的耐久性的影响是明显的,RAC抵抗周期荷载循环的能力随着水饱和度的增加而变大;对于潮湿养护条件,再生骨料对混凝土渗透性的影响并不明显。
通過總結再生混凝土耐久性的影響因素,得齣瞭不同因素對再生混凝土耐久性的影響特徵。在相同配閤比和再生骨料品質的情況下,混凝土的耐久性隨著再生骨料取代率的增加而降低,但隨著齡期的增加而增彊;再生骨料中所含有的濕度對新拌混凝土的耐久性的影響是明顯的,RAC牴抗週期荷載循環的能力隨著水飽和度的增加而變大;對于潮濕養護條件,再生骨料對混凝土滲透性的影響併不明顯。
통과총결재생혼응토내구성적영향인소,득출료불동인소대재생혼응토내구성적영향특정。재상동배합비화재생골료품질적정황하,혼응토적내구성수착재생골료취대솔적증가이강저,단수착령기적증가이증강;재생골료중소함유적습도대신반혼응토적내구성적영향시명현적,RAC저항주기하재순배적능력수착수포화도적증가이변대;대우조습양호조건,재생골료대혼응토삼투성적영향병불명현。
According ot the summary of the influencing factors of the recycled concrete’s durability,the paper concludes the influence features of the various factors on the durability,indicates the concrete durability lowers along with the increasing the replacing ratio of recycled aggregate under the same mix proportion and quality of the recycled aggregate,but it turns to be better with increasing ages,illustrates the humidity in the recycled aggregate has the evident influence on the newly-mixed concrete durability,while the RAC capacity to resist the period loading circle, and proves the recycled aggregate has unclear influence on concrete’s permeability under the moist maintenance.