砼随着材料的开发及应用,砼组成材料由普通砼的水泥、砂、石、水四种发展为5~7种组成材料,使影响砼强度及工作性等的因素变得更复杂,这就为砼配合比的确定提出了新的要求.配合比的确定,关键是要保证砼满足施工、强度、耐久性、经济性四方面要求.在现行配合比设计规程JGJ/T55-96中,高强砼配合比确定方法基本上还采用普通砼的确定方法.但在实践中,该方法已显不足.¨ïHÛ½4bbs.3c3t.com¶»i(ø5© 表1 试验因素水平表¨ïHÛ½4bbs.3c3t.com¶»i(ø5© ¨ïHÛ½4bbs.3c3t.com¶»i(ø5© |
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¨ïHÛ½4bbs.3c3t.com¶»i(ø5© ② 确定最佳配合比¨ïHÛ½4bbs.3c3t.com¶»i(ø5© (责任编辑 张晓云)■¨ïHÛ½4bbs.3c3t.com¶»i(ø5© ¨ïHÛ½4bbs.3c3t.com¶»i(ø5©作者简介:卢进亮(1962-),男,广西玉林人,广西大学土木建筑工程学院高级工程师.¨ïHÛ½4bbs.3c3t.com¶»i(ø5© 参考文献:¨ïHÛ½4bbs.3c3t.com¶»i(ø5© [1]卢进亮,张树辉.高性能混凝土配合比关键参数对强度的影响[J].广西大学学报(自然科学版),1998,(2):186.¨ïHÛ½4bbs.3c3t.com¶»i(ø5© [2]JGJ/T55-96.混凝土配合比设计规程[S].中华人民共和国行业标准.¨ïHÛ½4bbs.3c3t.com¶»i(ø5© [3]陈肇元.高强混凝土及其应用[M].北京:清华大学出版社,1993.¨ïHÛ½4bbs.3c3t.com¶»i(ø5© |