纳米纤维路面混凝土配合比及耐久性实验研究

doi:10.11962/1006-4990.2020-0288

Abstract

Abstract:

In order to study the influence of nano fiber on the frost resistance and mechanical properties of pavement concrete,the compressive strength and frost resistance of concrete doped with nano silica,nano alumina and polypropylene fiber were studied,respectively.The results showed that the improvement effect of nano-SiO₂ doping on the compressive strength of concrete was the most obvious,the effect of nano-sized powder doping on the frost resistance of concrete was more significant than that of polypropylene fiber doping,and the loss of length and quality of concrete doped with 5% nano-sized SiO₂ and 0.2% polypropylene fiber was the least after the freeze-thaw cycle.

Key words: concrete, frost resistance, silica, nano fiber, polypropylene fiber

CLC Number:

TQ342.62

Liu Ning,Wang Chusheng. Experimental study on mix proportion and durability of nano fiber pavement concrete[J]. Inorganic Chemicals Industry, 2020, 52(10): 96-99.

Figures/Tables 11

References 14

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名称	粒径/ nm	比表面积/ （m²·g^-1）	密度/ （g·cm^-3）
纳米二氧化硅	17	180	0.16
纳米氧化铝	17	210	0.23

样品	水	水泥	砂	粗骨料	SiO₂*	Al₂O₃*
C	136	298	872	827	—	—
1PC	136	298	868	827	—	—
2PC	136	298	865	827	—	—
3SC	136	300	861	827	9.0	—
1P3SC	136	300	861	827	9.0	—
2P3SC	136	300	858	827	9.0	—
5SC	136	290	855	827	14.5	—
1P5SC	136	290	853	827	14.5	—
2P5SC	136	290	851	827	14.5	—
7SC	136	280	853	827	19.6	—
1P7SC	136	280	852	827	19.6	—
2P7SC	136	280	851	827	19.6	—
1AC	136	300	857	827	—	3.0
1P1AC	136	300	858	827	—	3.0
2P1AC	136	300	861	827	—	3.0
2AC	136	298	866	827	—	6.0
1P2AC	136	298	865	827	—	6.0
2P2AC	136	298	868	827	—	6.0
3AC	136	300	871	827	—	9.0
1P3AC	136	300	866	827	—	9.0
2P3AC	136	300	868	827	—	9.0

样品	强度损失
样品	50次	150次	300次
C	21	68	100
3SC	8	18	29
5SC	6	10	27
7SC	9	16	24

样品	强度损失
样品	50次	150次	300次
C	21	68	100
1AC	6	13	24
2AC	5	11	22
3AC	4	10	20

样品	强度损失
样品	50次	150次	300次
C	24	65	100
1PC	18	52	100
2PC	15	42	100

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Inorganic Acid-Base-Salt Committee of CIESC

Experimental study on mix proportion and durability of nano fiber pavement concrete

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