水泥路面混凝土配合比设计与耐久性研究
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摘要
针对水泥混凝土路面耐久性问题,首先给出了脆性系数、断裂韧性与弯拉弹性模量三个评价指标,然后设计并进行了四因素(水灰比、砂率、水泥用量、水泥细度)五水平二次回归正交试验。通过实验数据分析得出结论:水泥混凝土在抵抗裂纹扩展方面最优设计配合比为水灰比:0.41;砂率:37.5%;水泥用量:406 kg/m~3;水泥细度:375 m~2/kg;水泥混凝土在刚度方面最优配合比考虑为水灰比:0.41;砂率:32%;水泥细度:300 m~2/kg;综合四因素考虑最终给出了路面水泥混凝土耐久性配合比建议范围:水灰比:0.38~0.41;砂率:35.2%~37.5%;水泥用量:390~406 kg/m~3;水泥细度:375~420 m~2/kg。
Aiming at the problem of cement concrete pavement durability,firstly,brittleness coefficient,fracture toughness and flexural modulus of three evaluation indexes,and then the design of four factors( water and cement ratio,sand ratio,dosage of cement,cement fineness) two orthogonal experiments with five levels. Through data analysis concluded: cement concrete crack propagation resistance in the optimal mix design for water cement ratio: 0. 41; Sand rate: 37. 5%; the amount of cement sand ratio: 406 kg/m~3; Cement fineness: 375 m~2/kg; cement fineness: Cement Concrete stiffness is considered as optimal ratio of water cement ratio: 0. 41; sand rate: 32%; cement fineness: 300 m~2/kg; comprehensive consideration is given to the four recommendations with cement concrete pavement durability: water cement ratio: 0. 38 ~ 0. 41; 35. 2% ~ 37. 5%; the dosage of cement sand ratio,fineness of cement: 375m~2/kg ~ 420 m~2/kg: 390 kg/m~3~ 406 kg/m~3.
Aiming at the problem of cement concrete pavement durability,firstly,brittleness coefficient,fracture toughness and flexural modulus of three evaluation indexes,and then the design of four factors( water and cement ratio,sand ratio,dosage of cement,cement fineness) two orthogonal experiments with five levels. Through data analysis concluded: cement concrete crack propagation resistance in the optimal mix design for water cement ratio: 0. 41; Sand rate: 37. 5%; the amount of cement sand ratio: 406 kg/m~3; Cement fineness: 375 m~2/kg; cement fineness: Cement Concrete stiffness is considered as optimal ratio of water cement ratio: 0. 41; sand rate: 32%; cement fineness: 300 m~2/kg; comprehensive consideration is given to the four recommendations with cement concrete pavement durability: water cement ratio: 0. 38 ~ 0. 41; 35. 2% ~ 37. 5%; the dosage of cement sand ratio,fineness of cement: 375m~2/kg ~ 420 m~2/kg: 390 kg/m~3~ 406 kg/m~3.
引文
[1]闫倩倩,李雪峰,田波,等.低噪声露石水泥混凝土路面配合比设计研究[J].施工技术,2015(24):63-66.
[2]朱玉芳.大流动度路面混凝土耐久性试验研究[D].重庆:重庆交通大学,2015.
[3]王思涛.典型桥梁主梁断面气动特性风洞试验研究[D].大连:大连理工大学,2015.
[4]解飞.寒区路面水泥混凝土耐久性改善的材料技术试验研究[D].哈尔滨:东北林业大学,2015.
[5]吴燕.超量粉煤灰水泥混凝土路面配合比设计及应用——以宁夏姚汝公路汝箕沟段为例[J].宁夏工程技术,2014(4):363-365+369.
[6]张瑞伟.水泥混凝土路面耐久性的配合比组成设计与施工技术要点分析[J].交通世界:建养.机械,2013(12):166-167.
[7]江思颖.掺粉煤灰碾压混凝土耐久性研究[D].重庆:重庆交通大学,2013.
[8]陈强.基于旧水泥混凝土再生集料的耐久性半刚性基层性能及设计参数的应用研究[D].广州:华南理工大学,2013.
[9]王钊,黄博彦,钟贤.橡胶沥青混凝土在广东高速公路中的应用研究[J].公路工程,2010(4):163-166+185.
[10]姚志立,郑国荣,习安.C50T型梁机制砂混凝土的配合比设计[J].公路工程,2009(6):82-84.
[11]狄吉峰.浅谈路面水泥混凝土的配合比设计[J].内蒙古教育:职教版,2013(3):64-65.
[2]朱玉芳.大流动度路面混凝土耐久性试验研究[D].重庆:重庆交通大学,2015.
[3]王思涛.典型桥梁主梁断面气动特性风洞试验研究[D].大连:大连理工大学,2015.
[4]解飞.寒区路面水泥混凝土耐久性改善的材料技术试验研究[D].哈尔滨:东北林业大学,2015.
[5]吴燕.超量粉煤灰水泥混凝土路面配合比设计及应用——以宁夏姚汝公路汝箕沟段为例[J].宁夏工程技术,2014(4):363-365+369.
[6]张瑞伟.水泥混凝土路面耐久性的配合比组成设计与施工技术要点分析[J].交通世界:建养.机械,2013(12):166-167.
[7]江思颖.掺粉煤灰碾压混凝土耐久性研究[D].重庆:重庆交通大学,2013.
[8]陈强.基于旧水泥混凝土再生集料的耐久性半刚性基层性能及设计参数的应用研究[D].广州:华南理工大学,2013.
[9]王钊,黄博彦,钟贤.橡胶沥青混凝土在广东高速公路中的应用研究[J].公路工程,2010(4):163-166+185.
[10]姚志立,郑国荣,习安.C50T型梁机制砂混凝土的配合比设计[J].公路工程,2009(6):82-84.
[11]狄吉峰.浅谈路面水泥混凝土的配合比设计[J].内蒙古教育:职教版,2013(3):64-65.