CN109704664A - A method of improving cured concrete antifreezing grade - Google Patents
A method of improving cured concrete antifreezing grade Download PDFInfo
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- CN109704664A CN109704664A CN201910190029.3A CN201910190029A CN109704664A CN 109704664 A CN109704664 A CN 109704664A CN 201910190029 A CN201910190029 A CN 201910190029A CN 109704664 A CN109704664 A CN 109704664A
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Abstract
The invention discloses a kind of methods for improving cured concrete antifreezing grade, the following steps are included: S1: water intaking, cement, flyash, sand, stone, water-reducing agent match concrete, it is configured according to different proportion, obtains and match different concrete, in case using；S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, one group is processing group B, the surface of processing group A is cleared up, make surface free from dust, keep concrete surface dry, the freeze proof erosion coating of painted concrete: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree.Effective solution of the present invention concrete antifreezing unqualified problem, its frost resistance is set to be enhanced about more than once on the basis of original, cured concrete antifreezing grade can be made to improve, so as to make the cured concrete for not reaching design requirement reach the freeze proof grade of design requirement.
Description
Technical field
The present invention relates to technical field of buildings more particularly to a kind of methods for improving cured concrete antifreezing grade.
Background technique
Frost resistance is the important indicator of concrete durability design, is rebuild if freeze proof disqualified concrete tears digging open, loss
Too big, cost is too high.It is untreated, jeopardize the service life of building structure.Present engineering project is lifelong responsibility system, once go out
Thing, not only unit in charge of construction, management, design and owner's unit will bear relevant quality safety responsibility, if taking processing again
There is no relevant technical solution and foundation.
Design of freezing resistance index is able to satisfy freeze proof class requirement to existing concrete under lab, and scene is for having consolidated
The core boring sampling for changing concrete, cannot but reach the freeze proof index of design requirement, for this purpose, proposing a kind of cured concrete of raising
The method of freeze proof grade.
Summary of the invention
Technical problems based on background technology improve cured concrete antifreezing grade the invention proposes a kind of
Method.
The present invention the following steps are included:
S1: water intaking, cement, flyash, sand, stone, water-reducing agent match concrete, are configured according to different proportion, obtain
Different concrete is matched, in case using；
S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, and one group is place
Reason group B clears up the surface of processing group A, makes surface free from dust, keeps concrete surface dry, painted concrete is freeze proof
Lose coating: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree, then equal 24 hours, then brush second time concrete benefit it is good-
U587, it is desirable that it is identical as first pass, it is tested after 7 days, processing group B is not processed；
S3: the A of processing group described in S2 and processing group B is weighed, and quality mA1 and mB1, then carry out respectively before record is handled
It is put into identical freeze thawing machine, mutually synthermal, homogeneous circulation progress antifreezing test is set；
S4: described in the S3 not after the antifreezing test of homogeneous circulation, processing group A and processing group B that not homogeneous is recycled
It takes out, measures its quality, quality mA2 and mB2 after record processing；
S5: elasticity modulus loss late is calculated by (mA1-mA2)/mA1 and (mB1-mB2)/mB1, data is recorded, table is made
Lattice.
Preferably, in the S1, the inspection foundation that degree is done in saturation plane is to estimate at least five seconds to apply swiped through concrete table
There is wet trace in face.
Preferably, in the S3, the model TDR-16/28 of freeze thawing machine.
Preferably, it in the S3 and S4, is weighed by electronic platform balance, and the model TCS-150 of electronic platform balance.
Preferably, in the S2, the surface processing group A is cleared up by air blower, and the model CX- of air blower
150。
Preferably, in the S1, concrete surface must not have bright water during 24 hours after the good-U587 of brushing concrete benefit.
Preferably, in the S1, the concrete of different ratio only adds water-reducing agent without adding air entraining agent.
Beneficial effects of the present invention: the unqualified problem of concrete antifreezing of having determined effectively solved makes its frost resistance original
On the basis of be enhanced about more than once, cured concrete antifreezing grade can be made to improve, so as to make not reach design requirement
Curing concrete reaches the freeze proof grade of design requirement.
Detailed description of the invention
Fig. 1 is the concrete mix in the present invention；
Fig. 2 is 0.55 concrete dynamic modulus of elasticity loss late comparison diagram of the ratio of mud；
Fig. 3 is 0.55 concrete dynamic modulus of elasticity tendency chart of the ratio of mud；
Fig. 4 is 0.45 concrete dynamic modulus of elasticity loss late comparison diagram of the ratio of mud；
Fig. 5 is 0.45 concrete dynamic modulus of elasticity tendency chart of the ratio of mud；
Fig. 6 is 0.40 concrete dynamic modulus of elasticity loss late comparison diagram of the ratio of mud；
Fig. 7 is 0.40 concrete dynamic modulus of elasticity tendency chart of the ratio of mud；
Fig. 8 is 0.35 concrete dynamic modulus of elasticity loss late comparison diagram of the ratio of mud；
Fig. 9 is 0.35 concrete dynamic modulus of elasticity tendency chart of the ratio of mud.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment one
With reference to Fig. 1, Fig. 2 and Fig. 3, the present invention the following steps are included:
S1: 140 parts of water intaking, 191 parts of cement, 64 parts of flyash, 795 parts of sand, 1193 parts of stone, 2.545 parts of water-reducing agent proportions
Concrete, obtains the concrete that native gray scale is 0.55, and compression strength 23.0MPa matches and compares as shown in Figure 1；
S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, and one group is place
Reason group B clears up the surface of processing group A, makes surface free from dust, keeps concrete surface dry, painted concrete is freeze proof
Lose coating: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree, then equal 24 hours, then brush second time concrete benefit it is good-
U587, it is desirable that it is identical as first pass, it is tested after 7 days, processing group B is not processed；
S3: the A of processing group described in S2 and processing group B is weighed, and quality mA1 and mB1, then carry out respectively before record is handled
Be put into identical freeze thawing machine, mutually synthermal, homogeneous circulation progress antifreezing test be set, cycle-index is respectively 50,100,
150 and 200 circulations；
S4: described in the S3 not after the antifreezing test of homogeneous circulation, processing group A and processing group B that not homogeneous is recycled
It takes out, measures its quality, quality mA2 and mB2 after record processing；
S5: elasticity modulus loss late is calculated by (mA1-mA2)/mA1 and (mB1-mB2)/mB1, data is recorded, table is made
Lattice, table are as shown in Figures 2 and 3.
In the S1, saturation plane do the inspection of degree according to be estimate apply at least five seconds swiped through concrete surface have it is wet
Trace in the S3, in the model TDR-16/28, the S3 and S4 of freeze thawing machine, is weighed, and electronics by electronic platform balance
In the model TCS-150, the S2 of table scale, the surface processing group A is cleared up by air blower, and the model of air blower
In CX-150, the S1, concrete surface must not have bright water during 24 hours after the good-U587 of brushing concrete benefit, in the S1, no
Concrete with proportion only adds water-reducing agent without adding air entraining agent, it is therefore an objective to accelerate its destruction speed under Freezing-Melting Condition
Degree, simulation on-site concrete is not freeze proof up to standard, and then compares the height brushed with non-brushing concrete antifreezing ability.
Embodiment two
With reference to Fig. 1, Fig. 4 and Fig. 5, the present invention the following steps are included:
S1: 138 parts of water intaking, 307 parts of cement, 0 part of flyash, 778 parts of sand, 1252 parts of stone, 3.070 parts of water-reducing agent proportions are mixed
Solidifying soil, obtains the concrete that native gray scale is 0.45, and compression strength 29.1MPa matches and compares as shown in Figure 1；
S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, and one group is place
Reason group B clears up the surface of processing group A, makes surface free from dust, keeps concrete surface dry, painted concrete is freeze proof
Lose coating: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree, then equal 24 hours, then brush second time concrete benefit it is good-
U587, it is desirable that it is identical as first pass, it is tested after 7 days, processing group B is not processed；
S3: the A of processing group described in S2 and processing group B is weighed, and quality mA1 and mB1, then carry out respectively before record is handled
Be put into identical freeze thawing machine, mutually synthermal, homogeneous circulation progress antifreezing test be set, cycle-index is respectively 50,100,
150 and 200 circulations；
S4: described in the S3 not after the antifreezing test of homogeneous circulation, processing group A and processing group B that not homogeneous is recycled
It takes out, measures its quality, quality mA2 and mB2 after record processing；
S5: elasticity modulus loss late is calculated by (mA1-mA2)/mA1 and (mB1-mB2)/mB1, data is recorded, table is made
Lattice, table are as shown in Figure 4 and Figure 5.
In the S1, saturation plane do the inspection of degree according to be estimate apply at least five seconds swiped through concrete surface have it is wet
Trace in the S3, in the model TDR-16/28, the S3 and S4 of freeze thawing machine, is weighed, and electronics by electronic platform balance
In the model TCS-150, the S2 of table scale, the surface processing group A is cleared up by air blower, and the model of air blower
In CX-150, the S1, concrete surface must not have bright water during 24 hours after the good-U587 of brushing concrete benefit, in the S1, no
Concrete with proportion only adds water-reducing agent without adding air entraining agent, it is therefore an objective to accelerate its destruction speed under Freezing-Melting Condition
Degree, simulation on-site concrete is not freeze proof up to standard, and then compares the height brushed with non-brushing concrete antifreezing ability.
Embodiment three
With reference to Fig. 1, Fig. 6 and Fig. 7, the present invention the following steps are included:
S1: 138 parts of water intaking, 345 parts of cement, 0 part of flyash, 744 parts of sand, 1252 parts of stone, 3.45 parts of water-reducing agent proportions are mixed
Solidifying soil, obtains the concrete that native gray scale is 0.40, and compression strength 41.1MPa matches and compares as shown in Figure 1；
S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, and one group is place
Reason group B clears up the surface of processing group A, makes surface free from dust, keeps concrete surface dry, painted concrete is freeze proof
Lose coating: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree, then equal 24 hours, then brush second time concrete benefit it is good-
U587, it is desirable that it is identical as first pass, it is tested after 7 days, processing group B is not processed；
S3: the A of processing group described in S2 and processing group B is weighed, and quality mA1 and mB1, then carry out respectively before record is handled
Be put into identical freeze thawing machine, mutually synthermal, homogeneous circulation progress antifreezing test be set, cycle-index is respectively 50,100,
150,200,250,300,350,400,450,500,550,600,650 and 700 circulations；
S4: described in the S3 not after the antifreezing test of homogeneous circulation, processing group A and processing group B that not homogeneous is recycled
It takes out, measures its quality, quality mA2 and mB2 after record processing；
S5: elasticity modulus loss late is calculated by (mA1-mA2)/mA1 and (mB1-mB2)/mB1, data is recorded, table is made
Lattice, table are as shown in Figure 6 and Figure 7.
In the S1, saturation plane do the inspection of degree according to be estimate apply at least five seconds swiped through concrete surface have it is wet
Trace in the S3, in the model TDR-16/28, the S3 and S4 of freeze thawing machine, is weighed, and electronics by electronic platform balance
In the model TCS-150, the S2 of table scale, the surface processing group A is cleared up by air blower, and the model of air blower
In CX-150, the S1, concrete surface must not have bright water during 24 hours after the good-U587 of brushing concrete benefit, in the S1, no
Concrete with proportion only adds water-reducing agent without adding air entraining agent, it is therefore an objective to accelerate its destruction speed under Freezing-Melting Condition
Degree, simulation on-site concrete is not freeze proof up to standard, and then compares the height brushed with non-brushing concrete antifreezing ability.
Example IV
With reference to Fig. 1, Fig. 8 and Fig. 9, the present invention the following steps are included:
S1: 138 parts of water intaking, 394 parts of cement, 0 part of flyash, 708 parts of sand, 1244 parts of stone, 3.94 parts of water-reducing agent proportions are mixed
Solidifying soil, obtains the concrete that native gray scale is 0.35, and compression strength 50.5MPa matches and compares as shown in Figure 1；
S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, and one group is place
Reason group B clears up the surface of processing group A, makes surface free from dust, keeps concrete surface dry, painted concrete is freeze proof
Lose coating: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree, then equal 24 hours, then brush second time concrete benefit it is good-
U587, it is desirable that it is identical as first pass, it is tested after 7 days, processing group B is not processed；
S3: the A of processing group described in S2 and processing group B is weighed, and quality mA1 and mB1, then carry out respectively before record is handled
Be put into identical freeze thawing machine, mutually synthermal, homogeneous circulation progress antifreezing test be set, cycle-index is respectively 50,100,
150,200,250,300,350,400,450,500,550,600,650 and 700 circulations；
S4: described in the S3 not after the antifreezing test of homogeneous circulation, processing group A and processing group B that not homogeneous is recycled
It takes out, measures its quality, quality mA2 and mB2 after record processing；
S5: elasticity modulus loss late is calculated by (mA1-mA2)/mA1 and (mB1-mB2)/mB1, data is recorded, table is made
Lattice, table are as shown in Figure 8 and Figure 9.
In the S1, saturation plane do the inspection of degree according to be estimate apply at least five seconds swiped through concrete surface have it is wet
Trace in the S3, in the model TDR-16/28, the S3 and S4 of freeze thawing machine, is weighed, and electronics by electronic platform balance
In the model TCS-150, the S2 of table scale, the surface processing group A is cleared up by air blower, and the model of air blower
In CX-150, the S1, concrete surface must not have bright water during 24 hours after the good-U587 of brushing concrete benefit, in the S1, no
Concrete with proportion only adds water-reducing agent without adding air entraining agent, it is therefore an objective to accelerate its destruction speed under Freezing-Melting Condition
Degree, simulation on-site concrete is not freeze proof up to standard, and then compares the height brushed with non-brushing concrete antifreezing ability.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of method for improving cured concrete antifreezing grade, which comprises the following steps:
S1: water intaking, cement, flyash, sand, stone, water-reducing agent match concrete, are configured, are matched according to different proportion
Different concrete, in case using；
S2: by different mixture ratio described in S1 it is concrete curing after be divided into two groups, one group is processing group A, and one group is processing group
B clears up the surface of processing group A, makes surface free from dust, keeps concrete surface dry, and the freeze proof erosion of painted concrete applies
Material: the good-U587 of concrete benefit one time, it is desirable that reach saturation plane and do degree, then waits 24 hours, then brush second time good-U587 of concrete benefit,
It is required that it is identical as first pass, it is tested after 7 days, processing group B is not processed；
S3: the A of processing group described in S2 and processing group B is weighed, and quality mA1 and mB1, are then put into respectively before record is handled
In identical freeze thawing machine, mutually synthermal, homogeneous circulation progress antifreezing test is set；
S4: not taking out the processing group A and processing group B of not homogeneous circulation after the antifreezing test of homogeneous circulation described in the S3,
Measure its quality, quality mA2 and mB2 after record processing；
S5: elasticity modulus loss late is calculated by (mA1-mA2)/mA1 and (mB1-mB2)/mB1, data is recorded, table is made.
2. a kind of method for improving cured concrete antifreezing grade according to claim 1, which is characterized in that the S1
In, the inspection foundation that degree is done in saturation plane is to estimate at least five seconds swiped through concrete surfaces of painting to have wet trace.
3. a kind of method for improving cured concrete antifreezing grade according to claim 1, which is characterized in that the S3
In, the model TDR-16/28 of freeze thawing machine.
4. a kind of method for improving cured concrete antifreezing grade according to claim 1, which is characterized in that the S3
It in S4, is weighed by electronic platform balance, and the model TCS-150 of electronic platform balance.
5. a kind of method for improving cured concrete antifreezing grade according to claim 1, which is characterized in that the S2
In, the surface processing group A is cleared up by air blower, and the model CX-150 of air blower.
6. a kind of method for improving cured concrete antifreezing grade according to claim 2, which is characterized in that the S1
In, concrete surface must not have bright water during 24 hours after the good-U587 of brushing concrete benefit.
7. a kind of method for improving cured concrete antifreezing grade according to claim 3, which is characterized in that the S1
In, the concrete of different ratio only adds water-reducing agent without adding air entraining agent.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028563A (en) * | 2020-07-21 | 2020-12-04 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C40 inorganic coating anti-freezing concrete and method for spraying coating |
| CN112028561A (en) * | 2020-07-21 | 2020-12-04 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method and surface spraying process of C40 inorganic coating anti-freeze concrete |
| CN112028562A (en) * | 2020-07-21 | 2020-12-04 | 甘肃省地震局（中国地震局兰州地震研究所） | Inorganic coating anti-freezing concrete and preparation method thereof |
| CN112028550A (en) * | 2020-07-21 | 2020-12-04 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C40 anti-freezing concrete and inorganic coating spraying process |
| CN112047669A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C40 polypropylene fiber-doped anti-freeze concrete and process for spraying inorganic coating on surface of C40 polypropylene fiber-doped anti-freeze concrete |
| CN112047671A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | Inorganic coating anti-freezing composite concrete and preparation method thereof |
| CN112047672A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method and spraying process of C40 inorganic coating anti-freezing concrete |
| CN112624681A (en) * | 2020-07-21 | 2021-04-09 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C30 anti-freezing concrete and inorganic coating spraying process thereof |
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| CN112028563A (en) * | 2020-07-21 | 2020-12-04 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C40 inorganic coating anti-freezing concrete and method for spraying coating |
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| CN112028550A (en) * | 2020-07-21 | 2020-12-04 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C40 anti-freezing concrete and inorganic coating spraying process |
| CN112047669A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C40 polypropylene fiber-doped anti-freeze concrete and process for spraying inorganic coating on surface of C40 polypropylene fiber-doped anti-freeze concrete |
| CN112047671A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | Inorganic coating anti-freezing composite concrete and preparation method thereof |
| CN112047672A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method and spraying process of C40 inorganic coating anti-freezing concrete |
| CN112624681A (en) * | 2020-07-21 | 2021-04-09 | 甘肃省地震局（中国地震局兰州地震研究所） | Preparation method of C30 anti-freezing concrete and inorganic coating spraying process thereof |
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Application publication date: 20190503 |