CN113336501A - Cement-based rare earth compound capillary crystalline waterproof coating - Google Patents

Cement-based rare earth compound capillary crystalline waterproof coating Download PDF

Info

Publication number
CN113336501A
CN113336501A CN202110716138.1A CN202110716138A CN113336501A CN 113336501 A CN113336501 A CN 113336501A CN 202110716138 A CN202110716138 A CN 202110716138A CN 113336501 A CN113336501 A CN 113336501A
Authority
CN
China
Prior art keywords
rare earth
cerium
waterproof coating
lanthanum
weight percent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110716138.1A
Other languages
Chinese (zh)
Other versions
CN113336501B (en
Inventor
宋立军
王胜龙
吴银财
林凤龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Institute of Rare Earth Materials
Original Assignee
Xiamen Institute of Rare Earth Materials
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xiamen Institute of Rare Earth Materials filed Critical Xiamen Institute of Rare Earth Materials
Priority to CN202110716138.1A priority Critical patent/CN113336501B/en
Publication of CN113336501A publication Critical patent/CN113336501A/en
Application granted granted Critical
Publication of CN113336501B publication Critical patent/CN113336501B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C04B2111/00508—Cement paints
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a cement-based rare earth compound infiltration crystallization waterproof coating, which consists of 76 to 82 weight percent of ordinary portland cement, 9 to 15 weight percent of quartz sand, 0.2 to 0.6 weight percent of dispersant, 0.1 to 0.3 weight percent of defoamer, 0.2 to 0.4 weight percent of expanding agent and 4 to 12 weight percent of rare earth active master batch. The invention is composed of raw materials such as ordinary portland cement, aggregate quartz sand, rare earth active master batch, auxiliary agent and the like; the waterproof paint has the advantages of simple production process, simple and convenient construction and wide application, and can provide permanent and excellent waterproof protection for projects such as sewage and water treatment pools, subways, tunnel systems, tunnels, foundation projects, swimming pools and the like and buildings and furnishings.

Description

Cement-based rare earth compound capillary crystalline waterproof coating
Technical Field
The invention belongs to the technical field of waterproof coatings, and particularly relates to a cement-based rare earth compound capillary crystalline waterproof coating.
Background
The waterproof paint is a material which can form a waterproof film on the surface of a base layer after being coated and cured, can play a good role in water prevention, seepage prevention and protection, and is widely applied to various projects such as reservoirs, sewage and water treatment pools, subways, tunnel systems, tunnels, foundation projects, swimming pools and the like.
The cement-base permeable crystalline waterproof paint is one kind of inorganic material, which is prepared with Portland cement as base material, quartz sand and active chemical matter. The waterproof mechanism of the waterproof agent is mainly that water is used as a carrier, active chemical substances permeate into concrete to generate physicochemical reaction in concrete micropores and capillaries to generate water-insoluble crystals, and the water-insoluble crystals are filled and blocked in the concrete micropores to form a closed waterproof layer so as to achieve the waterproof purpose.
CN 111763061A discloses an anti-crack inorganic waterproof material prepared by rare earth alkali activator and mineral powder ingredients and a preparation method thereof. The waterproof material is prepared by mixing mineral powder, a rare earth alkali-activated cementing material (containing rare earth chloride, rare earth carbonate or rare earth nitrate) and an additive according to the proportion of 1: 1-3%: 23-60% by weight of the rare earth alkali-activated cementing material, and the rare earth alkali-activated cementing material is prepared by mixing water glass, an alkali substance and a rare earth compound. CN 1315302A discloses a high-strength rare earth waterproofing agent, which is prepared from naphthalene, rare earth chloride, sulfuric acid, formaldehyde, sodium hydroxide and the like through sulfonation reaction, hydrolysis reaction and neutralization reaction.
The rare earth elements related to the prior art are inorganic salt rare earth compounds, contain chlorine elements, have the risk of rusting reinforcing steel bars, and contain formaldehyde and other substances which are not environment-friendly.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a cement-based rare earth compound permeable crystallization waterproof coating.
The technical scheme adopted by the invention is as follows:
a cement-based rare earth compound infiltration crystallization waterproof coating comprises 76-82 wt% of ordinary portland cement, 9-15 wt% of quartz sand, 0.2-0.6 wt% of dispersant, 0.1-0.3 wt% of defoamer, 0.2-0.4 wt% of expanding agent and 4-12 wt% of rare earth active master batch,
the rare earth active master batch consists of a rare earth active compound and inorganic salt, wherein the rare earth active compound consists of at least three of cerium hydroxide, cerium citrate, cerium tannate, cerium oxalate, modified cerium rosinate, cerium sulfate, cerium cinnamate, lanthanum sulfate, lanthanum oxide, lanthanum tannate, lanthanum cinnamate, cerium sulfide and lanthanum sulfide, and the inorganic salt consists of at least two of lithium magnesium silicate, sodium sulfate, sodium hexametaphosphate and potassium sulfate.
In a preferred embodiment of the present invention, the rare earth active complex consists of cerium hydroxide, cerium tannate, cerium sulfate and lanthanum cinnamate.
Further preferably, the inorganic salt is composed of sodium hexametaphosphate and potassium sulfate.
In a preferred embodiment of the present invention, the rare earth active complex is composed of cerium citrate, modified cerium rosinate, lanthanum sulfate, lanthanum tannate, and cerium sulfide.
Further preferably, the inorganic salt consists of sodium silicate and sodium sulfate.
In a preferred embodiment of the present invention, the rare earth active compound is composed of lanthanum sulfate, lanthanum oxide and lanthanum tannate.
Further preferably, the inorganic salt consists of lithium magnesium silicate, sodium silicate and sodium sulfate.
In a preferred embodiment of the invention, the defoamer is RE 2971.
In a preferred embodiment of the invention, the swelling agent is a calcium sulfoaluminate type compound.
In a preferred embodiment of the present invention, the dispersant is an ester stearamide, hexenyl bis stearamide, glyceryl monostearate or glyceryl tristearate.
The invention has the beneficial effects that:
1. the invention adds rare earth active master batch into ordinary portland cement to prepare the waterproof coating, when the waterproof coating is dispersed by adding water and coated on a concrete substrate, the rare earth active compound in the rare earth active master batch permeates into pores or capillaries of the concrete substrate along with water, and reacts with calcium ions in the concrete substrate under alkaline conditions to generate calcium crystals and rare earth crystals, and the rare earth crystals are further oxidized by oxygen in the air to generate more insoluble crystals with the characteristics of acid and alkali resistance, water resistance, good stability and the like, thereby playing a role in blocking and sealing concrete cracks or pores and further playing a role in permanent waterproofing.
2. The rare earth ions in the rare earth active master batch have larger radius than calcium ions, the generated crystal volume is large, and compared with calcium compounds, the rare earth active master batch has more excellent blocking effect on concrete-based pores or capillaries
3. The specific inorganic salt in the rare earth active master batch can be combined with calcium ions to form crystal precipitates, the faster the rate of forming the crystals by combining the calcium ions is, the faster the exchange rate of the crystal with the rare earth ions is, so that the effect of promoting the crystallization precipitates of the rare earth ions is achieved, and the formation of the rare earth crystals can be more efficient and more stable by compounding the inorganic salt and the rare earth active compound.
4. The defoaming agent RE2971 is powdery, so that bubbles generated in the preparation process can be effectively eliminated, and the defects caused by the bubbles are reduced.
5. The calcium sulphoaluminate compound can effectively reduce the shrinkage phenomenon of cement in the curing process of ordinary portland cement, and eliminate the crack defect caused by the shrinkage of the ordinary portland cement.
6. The dispersant of the invention can uniformly disperse the rare earth active master batch in the ordinary Portland cement.
7. The waterproof paint is prepared from ordinary portland cement, aggregate quartz sand, rare earth active master batch and specific auxiliary agents, and all the components are cooperated with each other, so that the waterproof paint has a permanent, stable and effective waterproof effect.
8. The invention has simple production process, simple and convenient construction and wide application, and can provide permanent and excellent waterproof protection for projects such as sewage and water treatment pools, subways, tunnel systems, tunnels, foundation projects, swimming pools and the like and building furnishings.
Detailed Description
The technical solution of the present invention is further illustrated and described by the following detailed description.
Example 1
1. Preparation of cement-based rare earth composite capillary crystalline waterproof coating
(1) Preparing the rare earth active master batch: adding 5% of cerium hydroxide, 20% of cerium tannate, 30% of cerium sulfate, 20% of lanthanum cinnamate, 15% of sodium hexametaphosphate and 10% of potassium sulfate into a mixing tank, uniformly mixing by using a high-speed mixer, then placing into a drying oven at 110 ℃, drying for 4 hours, taking out, pouring into a grinding machine for grinding, and grinding while protecting with nitrogen to obtain powder with the mesh number of 3000.
(2) Pouring the common Portland cement into a dispersion cylinder, adding a defoaming agent, an expanding agent and a dispersing agent, dispersing for 20min, wherein the defoaming agent is RE2971, the expanding agent is a calcium sulphoaluminate type compound, and the dispersing agent is prepared by compounding ester stearamide and hexenyl bis stearamide in a mass ratio of 1: 1.
(3) And (3) pouring the aggregate quartz sand with the mesh number of 300 into a dispersion cylinder, and continuously stirring for 30 min.
(4) And (2) pouring the rare earth active master batch prepared in the step (1) into a dispersion cylinder, and continuously stirring for 40 min.
(5) Discharging and packaging.
The following table 1 shows the main component ratios of the cement-based rare earth composite infiltration crystallization waterproof coating prepared in this example:
table 1 ingredient ratio
Figure BDA0003133330460000031
Figure BDA0003133330460000041
2. EXAMPLE 1 Effect
The test was performed according to the standard GB 18445-:
table 2 example 1 water repellency test results
Figure BDA0003133330460000042
Example 2
1. Preparation of cement-based rare earth composite capillary crystalline waterproof coating
(1) Preparing the rare earth active master batch: adding 10% of cerium citrate, 25% of modified rosin cerium, 32% of lanthanum sulfate, 14% of lanthanum tannate, 5% of cerium sulfide, 8% of sodium silicate and 6% of sodium sulfate into a mixing tank, uniformly mixing by using a high-speed mixer, then placing into a 120 ℃ oven, drying for 3 hours, taking out, pouring into a grinder for grinding, and grinding while protecting with nitrogen to obtain powder with the mesh number of 4000, thus obtaining the cerium citrate powder.
(2) Pouring the common Portland cement into a dispersion cylinder, adding a defoaming agent, an expanding agent and a dispersing agent, dispersing for 20min, wherein the defoaming agent is RE2971, the expanding agent is a calcium sulphoaluminate type compound, and the dispersing agent is prepared by compounding hexenyl distearamide and glyceryl monostearate in a mass ratio of 1: 1.
(3) And (3) selecting aggregate quartz sand with the mesh number of 400, pouring the aggregate quartz sand into a dispersion cylinder, and continuously stirring for 30 min.
(4) And (2) pouring the rare earth active master batch prepared in the step (1) into a dispersion cylinder, and continuously stirring for 40 min.
(5) Discharging and packaging.
The following table 3 shows the composition ratio of the cement-based rare earth composite infiltration crystallization waterproof coating prepared in this embodiment:
TABLE 3 proportions of the components
Serial number Name (R) Mass percent/%)
1 Ordinary portland cement 76.1
2 Quartz sand 15.0
3 Dispersing agent 0.4
4 Defoaming agent 0.2
5 Expanding agent 0.3
6 Rare earth active master batch 8.0
2. Effects of the embodiment
The test was performed according to the standard GB 18445-2012, and the test results are shown in table 4 below:
table 4 example 2 water repellency test results
Figure BDA0003133330460000051
Figure BDA0003133330460000061
Example 3
1. Preparation of cement-based rare earth composite capillary crystalline waterproof coating
(1) Preparing the rare earth active master batch: adding 24% of lanthanum sulfate, 26% of lanthanum oxide, 12% of lanthanum tannate, 12% of lithium magnesium silicate, 15% of sodium silicate and 11% of sodium sulfate into a mixing cylinder, uniformly mixing by using a high-speed mixer, then putting into a baking oven at 140 ℃, drying for 2 hours, taking out, pouring into a grinding machine for grinding, and carrying out nitrogen protection while grinding to obtain 2000-mesh powder.
(2) Pouring the ordinary portland cement into a dispersion cylinder, adding a defoaming agent, an expanding agent and a dispersing agent, and dispersing for 20min, wherein the defoaming agent is RE 2971; the expanding agent is a calcium sulphoaluminate type compound; the dispersant is compounded by stearic acid monoglyceride and tristearin in a mass ratio of 1: 1.
(3) And (3) selecting aggregate quartz sand with the mesh number of 100, pouring the aggregate quartz sand into a dispersion cylinder, and continuously stirring for 30 min.
(4) And (2) pouring the rare earth active master batch prepared in the step (1) into a dispersion cylinder, and continuously stirring for 40 min.
(5) Discharging and packaging.
The following table 5 shows the composition ratio of the cement-based rare earth composite infiltration crystallization waterproof coating prepared in this embodiment:
TABLE 5 proportions of the components
Serial number Name (R) Mass percent/%)
1 Ordinary portland cement 81.9
2 Quartz sand 13
3 Dispersing agent 0.6
4 Defoaming agent 0.3
5 Expanding agent 0.2
6 Rare earth active master batch 4
2. Effects of the embodiment
The test was performed according to the standard GB 18445-:
table 6 example 3 water repellency test results
Figure BDA0003133330460000071
Comparative example 1
1. Preparation of cement-based permeable crystallization waterproof coating
(1) Pouring the ordinary portland cement into a dispersion cylinder, adding a defoaming agent, an expanding agent and a dispersing agent, and dispersing for 20min, wherein the defoaming agent is RE 2971; the expanding agent is a calcium sulphoaluminate type compound; the dispersant was prepared from hexenyl bis stearamide and glyceryl monostearate in a weight ratio of 1: 1, and the components are compounded according to the mass ratio of 1.
(2) And (3) pouring the aggregate quartz sand with the mesh number of 300 into a dispersion cylinder, and continuously stirring for 30 min.
(3) And discharging and packaging.
The following table 7 shows the main component ratios of the waterproof material prepared by the comparative example:
table 7 composition ratio of each component
Figure BDA0003133330460000072
Figure BDA0003133330460000081
2. Comparative example effects
The test was performed according to the standard GB 18445-2012, and the test results are shown in table 8 below:
table 8 comparative example 1 water resistance test results
Figure BDA0003133330460000082
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims.

Claims (10)

1. The cement-based rare earth compound infiltration crystallization waterproof coating is characterized by comprising the following components in parts by weight: consists of 76 to 82 weight percent of ordinary portland cement, 9 to 15 weight percent of quartz sand, 0.2 to 0.6 weight percent of dispersant, 0.1 to 0.3 weight percent of defoaming agent, 0.2 to 0.4 weight percent of expanding agent and 4 to 12 weight percent of rare earth active master batch, wherein,
the rare earth active master batch consists of a rare earth active compound and inorganic salt, wherein the rare earth active compound consists of at least three of cerium hydroxide, cerium citrate, cerium tannate, cerium oxalate, modified cerium rosinate, cerium sulfate, cerium cinnamate, lanthanum sulfate, lanthanum oxide, lanthanum tannate, lanthanum cinnamate, cerium sulfide and lanthanum sulfide, and the inorganic salt consists of at least two of lithium magnesium silicate, sodium sulfate, sodium hexametaphosphate and potassium sulfate.
2. The cementitious rare earth composite infiltration crystallization waterproof coating of claim 1, wherein: the rare earth active compound consists of cerium hydroxide, cerium tannate, cerium sulfate and lanthanum cinnamate.
3. The cementitious rare earth composite infiltration crystallization waterproof coating of claim 2, wherein: the inorganic salt consists of sodium hexametaphosphate and potassium sulfate.
4. The cementitious rare earth composite infiltration crystallization waterproof coating of claim 1, wherein: the rare earth active compound consists of cerium citrate, modified cerium rosin, lanthanum sulfate, lanthanum tannin and cerium sulfide.
5. The cementitious rare earth composite infiltration crystallization waterproof coating of claim 4, wherein: the inorganic salt consists of sodium silicate and sodium sulfate.
6. The cementitious rare earth composite infiltration crystallization waterproof coating of claim 1, wherein: the rare earth active compound consists of lanthanum sulfate, lanthanum oxide and lanthanum tannate.
7. The cementitious rare earth composite infiltration crystallization waterproof coating of claim 6, wherein: the inorganic salt is composed of lithium magnesium silicate, sodium silicate and sodium sulfate.
8. The cementitious rare earth composite infiltration crystallization waterproof coating of any one of claims 1 to 7, characterized in that: the antifoaming agent is RE 2971.
9. The cementitious rare earth composite infiltration crystallization waterproof coating of any one of claims 1 to 7, characterized in that: the expanding agent is a calcium sulphoaluminate type compound.
10. The cementitious rare earth composite infiltration crystallization waterproof coating of any one of claims 1 to 7, characterized in that: the dispersant is ester stearamide, hexenyl bis stearamide, glyceryl monostearate or glyceryl tristearate.
CN202110716138.1A 2021-06-25 2021-06-25 Cement-based rare earth compound capillary crystalline waterproof coating Active CN113336501B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110716138.1A CN113336501B (en) 2021-06-25 2021-06-25 Cement-based rare earth compound capillary crystalline waterproof coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110716138.1A CN113336501B (en) 2021-06-25 2021-06-25 Cement-based rare earth compound capillary crystalline waterproof coating

Publications (2)

Publication Number Publication Date
CN113336501A true CN113336501A (en) 2021-09-03
CN113336501B CN113336501B (en) 2022-05-13

Family

ID=77479004

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110716138.1A Active CN113336501B (en) 2021-06-25 2021-06-25 Cement-based rare earth compound capillary crystalline waterproof coating

Country Status (1)

Country Link
CN (1) CN113336501B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1315302A (en) * 2000-03-24 2001-10-03 邓根保 Strong rare-earth water-proofing agent and its preparing process
CN105731859A (en) * 2016-02-22 2016-07-06 沈阳建筑大学 Internally-doped capillary crystalline waterproof material and preparation method thereof
US20170114266A1 (en) * 2015-10-21 2017-04-27 Baker Hughes Incorporated Rare earth-containing compounds to enhance performance of downhole treatment compositions
WO2017159884A1 (en) * 2016-03-12 2017-09-21 Ri Byong Hyok High-performance permeable crystalline waterproof agent, its preparation method and waterproof construction method thereof
CN107572967A (en) * 2017-10-13 2018-01-12 安徽朗凯奇建材有限公司 A kind of cement group water-proofing material and its preparation technology
CN110436849A (en) * 2019-08-13 2019-11-12 安徽朗凯奇建材有限公司 A kind of cement based penetration crystallization type water proofing paint, preparation method and its application method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1315302A (en) * 2000-03-24 2001-10-03 邓根保 Strong rare-earth water-proofing agent and its preparing process
US20170114266A1 (en) * 2015-10-21 2017-04-27 Baker Hughes Incorporated Rare earth-containing compounds to enhance performance of downhole treatment compositions
CN105731859A (en) * 2016-02-22 2016-07-06 沈阳建筑大学 Internally-doped capillary crystalline waterproof material and preparation method thereof
WO2017159884A1 (en) * 2016-03-12 2017-09-21 Ri Byong Hyok High-performance permeable crystalline waterproof agent, its preparation method and waterproof construction method thereof
CN107572967A (en) * 2017-10-13 2018-01-12 安徽朗凯奇建材有限公司 A kind of cement group water-proofing material and its preparation technology
CN110436849A (en) * 2019-08-13 2019-11-12 安徽朗凯奇建材有限公司 A kind of cement based penetration crystallization type water proofing paint, preparation method and its application method

Also Published As

Publication number Publication date
CN113336501B (en) 2022-05-13

Similar Documents

Publication Publication Date Title
CN107540304B (en) Composite cement-based capillary crystalline waterproof material
FI72962C (en) Additive mixture for concrete and use, process for its preparation and its use.
CN103864386B (en) Inorganic water-proofing material for stopping leak of self-healing property slow setting and preparation method thereof
CN102515617B (en) Concrete anti-corrosion etching resisting agent and preparation method thereof
CN102617066B (en) Liquid accelerator for calcium-containing aluminosilicate cementing material and preparation method for liquid accelerator
CN110759699B (en) Bottom layer plastering gypsum and preparation method thereof
CN105461349A (en) A corrosion-inhibiting reinforcing agent used for a surface layer of steel fiber reinforced concrete and a preparing method thereof
CN112194440B (en) Alkali-resistant and anti-permeability waterproof slurry and construction process thereof
CN110041035A (en) A kind of C30 high-impermeable concrete of low cement amount and preparation method thereof
CN112679117A (en) High-performance portland cement and preparation method thereof
CN102557727A (en) Building cement-based penetration hardening material and preparation method thereof
CN113501685B (en) Regenerated concrete resistant to sulfate and chloride corrosion and preparation method thereof
CN101786826B (en) Ready-mixed mortar thickening plasticity-maintaining agent
CN108101443A (en) It is a kind of can Rapid-Repair crack permeable crystalline waterproofing material production method
US2990382A (en) Composition comprising hydraulic cement, methyl cellulose and reemulsifiable polyvinyl acetate, method of preparing same and mortar prepared therefrom
CN113336501B (en) Cement-based rare earth compound capillary crystalline waterproof coating
CN115490536B (en) Water-based permeable inorganic waterproof agent and preparation method and application thereof
KR20040099913A (en) A multi-functional admixture for a concrete structure
CN110590224A (en) Capillary crystalline waterproofing agent and application thereof in concrete of basement structure
US20230382800A1 (en) Modified dolomite powder, preparation method thereof and concrete
WO2017214108A1 (en) Strength enhancing admixtures for hydraulic cements
CN111548046A (en) Concrete mineral admixture for improving chloride ion permeation resistance and concrete
CN112479652A (en) Novel autoclaved aerated concrete plate reinforcement preservative and preparation method thereof
CN115490475B (en) Water permeable concrete resistant to ubiquity and alkalization and preparation method thereof
CN114044654B (en) Preparation method of inorganic self-repairing anti-permeability material applied to back water surface

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant