第
18
卷第
1
期
2015
年
2
月
建筑材料学报
JOURNAL OF BUILDING MATERIALS
文章编号:
1007-9629(2015)01-0017-07
Vo
l.
18
,No.1
Feb.
,
2015
橡胶集料自密实混凝土的毛细吸水特性研究
傅
强
谢友均
龙广成
钱智铭1,
2
马昆林
1
(1.中南大学土木工程学院,湖南长沙
410075;
2.
中国电建集团华东勘测设计研究院有限公司,浙江杭州
310014)
摘要:采用
ISA
T
Ci
nitial
surface
absorption
test)
方法,通过对比试验研究了橡胶集料自密实混凝
土
(RSCC)
和普通橡胶集料混凝土
(ORC)
的毛细吸水特性,分析了水胶比和橡胶掺量对
RSCC
毛
细吸水性能的影响,并建立了新的
RSCC
毛细吸水模型.结果表明:在水胶比和橡胶掺量相近的情
况下,
RSCC
的毛细吸水性能低于
ORC;
当水胶比相同时,橡胶掺量越大,
RSCC
的毛细吸水性能越
弱;当橡胶掺量相同时,水胶比越低,
RSCC
的毛细吸水性能越弱
;ORC
的毛细吸水性能对水胶比
变化的敏感程度较高.引用相关文献建立的橡胶集料混凝土的渗透模型对
RSCC
的毛细吸水试验
结果进行了拟合,试验结果与拟合结果的相关系数均大于
O.
860
O.
初始阶段毛细吸水系数的大小
能够反映
RSCC
毛细吸水能力的强弱.
关键词:橡胶集料自密实混凝土;毛细吸水;水胶比;橡胶掺量;模型
中图分类号:
TU528.
01
文献标志码
:A
doi
:l
O.
3969/j.
issn.
1007-9629.
2015.
0
1.
004
Study
on
Capillary
Water
Absorption
Properties
of
Rubberized
Self-compacting
Concrete
FU
Qiang
1
,
XIE
Youjun
1
,
LONG
Gu
angcheng
1
,
QIAN
Zhi
η
úng
1.
2
,
MA
Kunlin
1
(1.
School
of
Civil
Engineering ,
Ce
口
tral
South University , Changsha 410075 , China;
2.
POWERCHINA
Hua
口
gdong
Engineering Corporation
Limited
,日
angzhou
310014 , China)
Abstract:
lnitial
surface
absorption
test
(I
SA
T)
method
was
employed
to
investigate
the
capillary
water
ab
sorption
behavior
of
rubb
盯
ized
self-compacting
concrete(RSCC)
and
ordinary
rubberized
concrete(ORC)
through
the
contrast
test
and
the
effects
of
water-binder
ratio
and
the
content
of
rubber
par
啕
ticles
on
the
capillary
water
absorption
behavior
of
RSCC.
A
new
model
of
capillary
water
absorption
of
RSCC
was
es
tablished.
Results
indicate
that
in
the
similar
water-binder
ratio
and
rubb
盯
conte
时,
the
capillary
water
absorption
of
RSCC
is
lower
th
日
n
that
of
ORC.
When
the
water-binder
ratio
is
identical
,
the
greater
the
rubber
content
is
,
the
weaker
the
capillary
water
absorption
of
RSCC
is.
When
the
rubber
content
is
iden
tica
l,
the
lower
the
water-binder
ratio
is
,
the
weaker
the
capillarγwat
盯
absorption
of
RSCC
is.
The
capil
lary
water
absorption
property
of
ORC
is
more
sensitive
to
the
change
of
water-binder
ratio.
The
permea
bility
model
of
ORC
established
in
relevant
literature
is
in
accord
with
capillary
water
absorption
test
re
sult
,
correlation
coefficients
between
experimental
results
and
fitting
results
are
above
o.
860
0 ,
the
capil
lary
water
absorption
coefficients
in
the
initial
stage
can
reflect
the
capillary
water
absorption
capacity
of
RSCC.
Key
words:
rubberized
self-compacting
concrete;
capillary
water
absorption;
water-binder
ratio;
rubber
content;
model
收精日期:
2013-08-16;
修订日期:
2013-11-13
基金项目:国家重点基础研究发展计划
(973
计划)项目
(2013CB036200)
;国家自然科学基金资助项目
(51178467)
第一作者:傅
强(1
984-)
,男,山东激坊人,中南大学博士生
E-mail:
fuqiangcsu@163.com