CN112321222A - Ultrahigh-performance concrete prepared from tap water plant sludge powder - Google Patents
Ultrahigh-performance concrete prepared from tap water plant sludge powder Download PDFInfo
- Publication number
- CN112321222A CN112321222A CN202011082777.9A CN202011082777A CN112321222A CN 112321222 A CN112321222 A CN 112321222A CN 202011082777 A CN202011082777 A CN 202011082777A CN 112321222 A CN112321222 A CN 112321222A
- Authority
- CN
- China
- Prior art keywords
- parts
- cement
- ultra
- performance concrete
- high performance
- 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.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 90
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 69
- 239000000843 powder Substances 0.000 title claims abstract description 64
- 239000008399 tap water Substances 0.000 title description 34
- 235000020679 tap water Nutrition 0.000 title description 34
- 239000004568 cement Substances 0.000 claims abstract description 78
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 77
- 239000011707 mineral Substances 0.000 claims abstract description 77
- 239000002131 composite material Substances 0.000 claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000000835 fiber Substances 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000004576 sand Substances 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000011230 binding agent Substances 0.000 claims abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 39
- 229910021487 silica fume Inorganic materials 0.000 claims description 35
- 230000000694 effects Effects 0.000 claims description 28
- 238000000227 grinding Methods 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 9
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical group S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000004566 building material Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 34
- 239000000047 product Substances 0.000 description 12
- 238000001354 calcination Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000004567 concrete Substances 0.000 description 7
- 239000003292 glue Substances 0.000 description 7
- 239000002956 ash Substances 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000000701 coagulant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- -1 ceramsite Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
本发明涉及建筑材料技术领域，具体公开了一种采用自来水厂污泥粉制备的超高性能混凝土，按重量份计，包括以下组分，水泥650～850份，复合矿物掺合料200～400份，标准砂1010～1020份，钢纤维150～180份，减水剂18～25份，水140～190份；水泥和复合矿物掺合料组成胶凝材料，胶凝材料不低于1010份；所述水胶比为0.14～0.16。本发明具有原料易得、对环境较为友好、水泥用量较少、制造成本较低和组分组成较为完善的特点。The invention relates to the technical field of building materials, and specifically discloses an ultra-high performance concrete prepared by using sludge powder from a water plant, which comprises the following components in parts by weight: 650-850 parts of cement, and 200-400 parts of composite mineral admixture. parts, 1010-1020 parts of standard sand, 150-180 parts of steel fiber, 18-25 parts of water reducing agent, 140-190 parts of water; cement and composite mineral admixtures constitute a cementitious material, and the cementitious material shall not be less than 1010 parts ; The water-to-binder ratio is 0.14 to 0.16. The invention has the characteristics of easy availability of raw materials, environmental friendliness, less cement consumption, lower manufacturing cost and more complete component composition.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an ultrahigh-performance concrete prepared from sewage powder of a tap water plant.
Background
The ultra-high performance concrete generally refers to concrete with the compressive strength exceeding 150MPa, has ultra-high strength and toughness as a novel cement-based composite material, also has excellent durability, and has wider application prospect in different fields such as large-span bridges, military engineering, ocean engineering and the like. However, the manufacturing cost of the concrete is far higher than that of common concrete, so that the popularization and the application of the concrete are greatly influenced, and if the whole life cycle and the comprehensive consideration of energy conservation and environmental protection are considered, the ultra-high performance concrete has higher comprehensive practical value. With the continuous development and progress of the ultra-high performance concrete technology, various mineral admixtures such as fly ash, mineral powder, limestone powder, metakaolin or rice husk ash and the like are also used for replacing part of cement or silica fume to prepare the ultra-high performance concrete, so that the manufacturing cost of the ultra-high performance concrete is greatly reduced, part of performance of the ultra-high performance concrete is improved, and the application of the ultra-high performance concrete is greatly promoted.
The sludge of the water works is a solid waste different from pipeline sludge, urban sewage sludge, commercial concrete mixing plant sludge and the like, and generally, when the water works process raw water to produce tap water, the sludge-containing wastewater generated in the water works is collected, concentrated, dehydrated, dried and the like through a pipeline wastewater tank to obtain a sludge byproduct. Wherein, the properties of raw water pollutants, the production process flow of the waterworks, the type and the dosage of the coagulant and the like have great influence on the chemical compositions of the sludge of the waterworks. The currently used coagulants are mainly novel aluminum salt coagulants, which result in that the sludge contains more aluminum elements, so the sludge is also often called waterworks sludge. Along with the continuous development of urban construction sites, the demand of tap water is sharply increased every year, more and more water plants are built around the world, the sludge generated synchronously is exponentially increased, the sludge generated by the water plants in China per year exceeds 15 billion cubic meters, if the sludge is not reasonably treated and utilized, not only can the resource waste be caused, but also the serious environmental pollution can be caused. With the increasing awareness of environmental protection, there is a need to efficiently recycle and dispose a large amount of waterworks sludge as soon as possible.
The current technical method for disposing the sludge of the waterworks mainly comprises sanitary landfill, drying incineration, sewage purification and the like, has low utilization rate of the sludge of the waterworks, and does not well exert the maximum value of the sludge. Research shows that the sludge from waterworks has certain chemical activity and can be used for producing building materials, such as ceramsite, brick, some cement-based materials and the like. With the rapid development of economy in China, the pace of basic construction engineering is accelerated, the demand of the ultra-high performance concrete is continuously improved, cement is one of main components for preparing the ultra-high performance concrete, and the consumption of the cement is increasingly large along with the improvement of the demand of the ultra-high performance concrete, so that the cost of the ultra-high performance concrete is continuously improved. Therefore, there is a need for an improvement in the composition of ultra high performance concrete to reduce the amount of cement used and to reduce the cost.
Therefore, the existing ultra-high performance concrete has the problems of more cement consumption and higher manufacturing cost.
Disclosure of Invention
The invention aims to solve the technical problems of the existing ultrahigh-performance concrete, and provides the ultrahigh-performance concrete prepared from the sewage powder of the waterworks, which has the characteristics of less cement consumption and lower manufacturing cost.
The technical scheme of the invention is as follows: the ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
650-850 parts of cement, 200-400 parts of composite mineral admixture, 1010-1020 parts of standard sand, 150-180 parts of steel fiber, 18-25 parts of water reducing agent and 140-190 parts of water; the cement and the composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
According to the invention, after the composite mineral admixture is used for replacing part of cement, the composition and proportion of the components for preparing the ultra-high performance concrete are perfected again, so that the using amount of the cement is reduced, and the production cost caused by the need of a large amount of cement is reduced; the prepared ultra-high performance concrete has better toughness by doping a proper amount of steel fibers; according to the invention, by adding a proper amount of cementing materials, the internal microstructure of the ultra-high performance concrete is improved, so that the prepared ultra-high performance concrete has better compressive strength; according to the invention, the composite mineral admixture replaces part of cement to form the cementing material, and the composite mineral admixture particles in the cementing material are finer than cement, so that a micro-aggregate filling effect can be achieved, and as the age is increased, the composite mineral admixture in the cementing material slowly exerts the activity effect, so that more additional secondary hydration products C-S-H, C-A-H, CA-SH and the like are generated by active ingredients in the cementing material and cement hydration products, the internal pore structure of the concrete is further refined, and the performance of the ultra-high performance concrete is better improved.
Preferably, the composition comprises the following components in parts by weight,
700-800 parts of cement, 250-350 parts of composite mineral admixture, 1012-1018 parts of standard sand, 160-170 parts of steel fiber, 20-23 parts of water reducing agent and 160-180 parts of water; the cement and the composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
Preferably, the composition comprises the following components in parts by weight,
730-760 parts of cement, 280-320 parts of composite mineral admixture, 1014-1016 parts of standard sand, 163-167 parts of steel fiber, 21-22 parts of water reducer and 165-175 parts of water; the cement and the composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
Preferably, the preparation method of the complex mineral admixture comprises the following steps,
selecting sludge from a water works, drying, calcining for 1-3 hours at the temperature of 600-800 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The invention uses the sewage powder of the waterworks to replace part of cement, thereby reducing the consumption of the cement and further reducing the manufacturing cost; the sludge powder and the silica fume are further ground according to a certain proportion to prepare the composite mineral admixture, and the sludge powder and the silica fume of the cement and the tap water plant have different particle sizes and can be mutually filled and matched, so that the particle grading of the powder is effectively improved, the component composition is more perfect, the internal structure of the ultrahigh-performance concrete is effectively improved, the compact stacking density is achieved, and the application range of the tap water plant sludge is expanded; meanwhile, the silica fume has higher chemical activity, the tap water plant sludge powder also has certain chemical activity, and the later stage activity is higher, the tap water plant sludge powder and the silica fume are ground to prepare the composite mineral admixture, the tap water plant sludge powder and the silica fume are helpful for exciting the chemical activity of different ages while showing the micro-aggregate effect and presenting the super-superposition effect, so that the ultra-high performance concrete is prepared, the high added value resource utilization of the tap water plant sludge powder in the ultra-high performance concrete is realized, and the green sustainable development way advocated by the country is met.
More preferably, the method comprises the steps of selecting sludge from a water works, drying, calcining for 1.5-2.5 hours at the temperature of 650-750 ℃, mixing with silica fume, and grinding together to obtain the product.
The invention prepares the sludge powder of the waterworks by selecting the sludge of the waterworks, has easily available raw materials, can recycle the sludge of the waterworks on a large scale by resource regeneration, belongs to the reasonable treatment and reutilization of resources, avoids the resource waste, also avoids the pollution caused by directly discharging the sludge into the environment, and has the characteristic of being friendly to the environment; the invention can effectively eliminate organic matters and impurities in the sludge by calcining the sludge of the waterworks for a proper time at a proper temperature, for example, calcining for 2 hours at 700 ℃, thereby further reducing the loss on ignition, and further improving the chemical activity by grinding the sludge into the sludge powder of the waterworks on the basis; the invention uses the sewage powder of the waterworks to replace part of cement, thereby reducing the consumption of the cement and further reducing the manufacturing cost; the sludge powder and the silica fume are further ground according to a certain proportion to prepare the composite mineral admixture, and the sludge powder and the silica fume of the cement and the tap water plant have different particle sizes and can be mutually filled and matched, so that the particle grading of the powder is effectively improved, the component composition is more perfect, the internal structure of the ultrahigh-performance concrete is effectively improved, the compact stacking density is achieved, and the application range of the tap water plant sludge is expanded; meanwhile, the silicon ash with limited purity has higher chemical activity, the sludge powder of the tap water plant also has certain chemical activity, and the activity of the sludge powder and the silicon ash of the tap water plant is higher in the later period, the sludge powder and the silicon ash of the tap water plant are ground to prepare a composite mineral admixture, the sludge powder and the silicon ash of the tap water plant are helpful for exciting the chemical activity of different ages while showing the micro-aggregate effect, and the super-superposition effect is shown, so that the super-high performance concrete is prepared, the high added value recycling of the sludge powder of the tap water plant in the super-high performance concrete is realized, and the green way of sustainable development advocated by the country is met.
Preferably, the purity of the silica fume is more than 94%; what is needed isAl in the sludge powder of waterworks2O3And SiO2The mass fraction of (A) is more than 35%.
Preferably, the mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is (1-3): 1. more preferably, the mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is (1.5-2.5): 1. the cement, the tap water plant sludge powder and the silica fume have different particle sizes and can be mutually filled and matched, so that the particle grading of the powder is effectively improved, the component composition is more perfect, the internal structure of the ultrahigh-performance concrete is effectively improved, and the application range of the tap water plant sludge is expanded.
Preferably, the specific surface area of the ground composite mineral admixture is more than or equal to 900m2Per kg; the 28-day activity index of the ground composite mineral admixture is more than or equal to 95 percent. The ultra-high performance concrete has better compressive strength by the performance requirement of the composite mineral admixture.
Preferably, the steel fiber is a copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.18-0.22 mm, the length of the steel fiber is 12-16 mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa. More preferably, the steel fiber is a copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.19-0.21 mm, the length of the steel fiber is 13-15 mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa. The prepared ultra-high performance concrete has better toughness by the performance requirement of the steel fiber.
Preferably, the water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%. The total solid content of the water reducing agent is limited, so that the workability and the constructability of cement can be improved, and the strength and the compactness of the ultra-high performance concrete are ensured.
Preferably, the cement is P.I 52.5 cement or P.II 52.5 cement.
Preferably, the 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
The invention has the following beneficial effects:
(1) after the composite mineral admixture is used for replacing part of cement, the composition and the proportion of the components for preparing the ultra-high performance concrete are perfected again, so that the using amount of the cement is reduced, and the production cost caused by the need of a large amount of cement is reduced;
(2) the prepared ultra-high performance concrete has better toughness by doping a proper amount of steel fibers;
(3) by adding a proper amount of cementing materials, the internal microstructure of the ultra-high performance concrete is improved, so that the prepared ultra-high performance concrete has better compressive strength;
(4) the composite mineral admixture is used for replacing part of cement to form the cementing material, the composite mineral admixture particles in the cementing material are finer than the cement, so that a micro-aggregate filling effect can be achieved, and as the age is prolonged, the composite mineral admixture in the cementing material slowly exerts the activity effect, so that more additional secondary hydration products C-S-H, C-A-H, CA-SH and the like are generated by the active ingredients in the cementing material and cement hydration products, the internal pore structure of the concrete is further refined, and the performance of the ultra-high performance concrete is better improved.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention.
The ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
650-850 parts of cement, 200-400 parts of composite mineral admixture, 1010-1020 parts of standard sand, 150-180 parts of steel fiber, 18-25 parts of water reducing agent and 140-190 parts of water; the cement and the composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
The ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
700-800 parts of cement, 250-350 parts of composite mineral admixture, 1012-1018 parts of standard sand, 160-170 parts of steel fiber, 20-23 parts of water reducing agent and 160-180 parts of water; the cement and the composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
The ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
730-760 parts of cement, 280-320 parts of composite mineral admixture, 1014-1016 parts of standard sand, 163-167 parts of steel fiber, 21-22 parts of water reducer and 165-175 parts of water; the cement and the composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
Cement and a composite mineral admixture form a cementing material, and the cementing material is not less than 1010 parts; the water-to-glue ratio is 0.14-0.16.
The preparation method of the composite mineral admixture comprises the following steps,
selecting sludge from a water works, drying, calcining for 1-3 hours at the temperature of 600-800 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The purity of the silica fume is more than 94 percent; al in tap water plant sludge powder2O3And SiO2The mass fraction of (A) is more than 35%.
The mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is (1-3): 1.
the specific surface area of the composite mineral admixture after grinding is more than or equal to 900m2Per kg; the 28-day activity index of the composite mineral admixture after grinding is more than or equal to 95 percent.
The steel fiber is copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.18-0.22 mm, the length of the steel fiber is 12-16 mm, the elastic modulus of the steel fiber is not less than 200GPa, and the tensile strength of the steel fiber is not less than 2700 MPa.
The water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%.
The cement is 52.5 cement of P.I or 52.5 cement of P.II.
The 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
Example 1:
the ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
650 parts of cement, 400 parts of composite mineral admixture, 1010 parts of standard sand, 150 parts of steel fiber, 18.8 parts of water reducing agent and 168 parts of water; the cement and the composite mineral admixture form a gelled material, and the water-to-gel ratio is 0.16.
The preparation method of the composite mineral admixture comprises the following steps,
selecting sludge from a waterworks, drying, calcining for 1 hour at the temperature of 600 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The purity of the silica fume is more than 94 percent; al in tap water plant sludge powder2O3And SiO2The mass fraction of (A) is more than 35%.
The mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is 1: 1.
the specific surface area of the composite mineral admixture after grinding is more than or equal to 900m2Per kg; the 28-day activity index of the composite mineral admixture after grinding is more than or equal to 95 percent.
The steel fiber is copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.18mm, the length of the steel fiber is 12mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa.
The water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%.
The cement is 52.5 cement with P.I.
The 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
The 28-day compressive strength of the ultra-high performance concrete obtained in the embodiment is 150.5 MPa.
Example 2:
the ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
850 parts of cement, 200 parts of composite mineral admixture, 1020 parts of standard sand, 180 parts of steel fiber, 24.2 parts of water reducing agent and 150 parts of water; the cement and the composite mineral admixture form a gelled material, and the water-to-gel ratio is 0.14.
The preparation method of the composite mineral admixture comprises the following steps,
selecting sludge from waterworks, drying, calcining for 3 hours at the temperature of 800 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The purity of the silica fume is more than 94 percent; al in tap water plant sludge powder2O3And SiO2The mass fraction of (A) is more than 35%.
The mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is 3: 1.
the specific surface area of the composite mineral admixture after grinding is more than or equal to 900m2Per kg; the 28-day activity index of the composite mineral admixture after grinding is more than or equal to 95 percent.
The steel fiber is copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.22mm, the length of the steel fiber is 16mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa.
The water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%.
The cement is P.II 52.5 cement.
The 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
The 28-day compressive strength of the ultra-high performance concrete obtained in the embodiment is 167.6 MPa.
Example 3:
the ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
700 parts of cement, 400 parts of composite mineral admixture, 1012 parts of standard sand, 160 parts of steel fiber, 22.1 parts of water reducing agent and 176 parts of water; the cement and the composite mineral admixture form a cementing material, and the water-to-gel ratio is 0.15.
The preparation method of the composite mineral admixture comprises the following steps,
selecting sludge from a waterworks, drying, calcining for 1 hour at the temperature of 600 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The purity of the silica fume is more than 94 percent; al in tap water plant sludge powder2O3And SiO2The mass fraction of (A) is more than 35%.
The mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is 1: 1.
the specific surface area of the composite mineral admixture after grinding is more than or equal to 900m2Per kg; the 28-day activity index of the composite mineral admixture after grinding is more than or equal to 95 percent.
The steel fiber is copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.18mm, the length of the steel fiber is 12mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa.
The water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%.
The cement is 52.5 cement with P.I.
The 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
The 28-day compressive strength of the ultra-high performance concrete obtained in the embodiment is 160.3 MPa.
Example 4:
the ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
800 parts of cement, 300 parts of composite mineral admixture, 1018 parts of standard sand, 170 parts of steel fiber, 23.5 parts of water reducing agent and 154 parts of water; the cement and the composite mineral admixture form a gelled material, and the water-to-gel ratio is 0.14.
The preparation method of the composite mineral admixture comprises the following steps,
selecting sludge from waterworks, drying, calcining for 3 hours at the temperature of 800 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The purity of the silica fume is more than 94 percent; al in tap water plant sludge powder2O3And SiO2The mass fraction of (A) is more than 35%.
The mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is 3: 1.
the specific surface area of the composite mineral admixture after grinding is more than or equal to 900m2Per kg; the 28-day activity index of the composite mineral admixture after grinding is more than or equal to 95 percent.
The steel fiber is copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.22mm, the length of the steel fiber is 16mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa.
The water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%.
The cement is P.II 52.5 cement.
The 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
The 28-day compressive strength of the ultra-high performance concrete obtained in the example is 169.8 MPa.
Example 5:
the ultra-high performance concrete prepared by adopting the sludge powder of the waterworks comprises the following components in parts by weight,
750 parts of cement, 350 parts of composite mineral admixture, 1015 parts of standard sand, 165 parts of steel fiber, 21.5 parts of water reducing agent and 160 parts of water; the cement and the composite mineral admixture form a cementing material, and the water-to-gel ratio is 0.15.
The preparation method of the composite mineral admixture comprises the following steps,
selecting sludge from waterworks, drying, calcining for 2 hours at the temperature of 700 ℃, mixing with silica fume, and grinding together to obtain the finished product.
The purity of the silica fume is more than 94 percent; al in the tap water plant sludge powder2O3And SiO2The mass fraction of (A) is more than 35%.
The mass ratio of the silica fume to the tap water plant sludge powder in the composite mineral admixture is 2: 1.
the specific surface area of the composite mineral admixture after grinding is more than or equal to 900m2Per kg; the 28-day activity index of the ground composite mineral admixture is more than or equal to 95 percent.
The steel fiber is copper-plated round and straight micro steel fiber, the diameter of the steel fiber is 0.2mm, the length of the steel fiber is 14mm, the elastic modulus of the steel fiber is more than or equal to 200GPa, and the tensile strength of the steel fiber is more than or equal to 2700 MPa.
The water reducing agent is a sulfamic acid water reducing agent, and the solid content in the water reducing agent is not less than 30%.
The cement is 52.5 cement with P.I.
The 28-day compressive strength of the ultra-high performance concrete is not lower than 150 MPa; the standard sand is ISO standard sand.
The 28-day compressive strength of the ultra-high performance concrete obtained in the embodiment is 164.7 MPa.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082777.9A CN112321222A (en) | 2020-10-12 | 2020-10-12 | Ultrahigh-performance concrete prepared from tap water plant sludge powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082777.9A CN112321222A (en) | 2020-10-12 | 2020-10-12 | Ultrahigh-performance concrete prepared from tap water plant sludge powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112321222A true CN112321222A (en) | 2021-02-05 |
Family
ID=74313471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011082777.9A Pending CN112321222A (en) | 2020-10-12 | 2020-10-12 | Ultrahigh-performance concrete prepared from tap water plant sludge powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112321222A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113336521A (en) * | 2021-05-24 | 2021-09-03 | 浙江永坚新材料科技股份有限公司 | Ecological potassium magnesium phosphate cement-based repair material |
| CN115073036A (en) * | 2022-07-27 | 2022-09-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Toughening functional filler and high-toughness concrete using same for road and bridge engineering |
| CN115231839A (en) * | 2022-06-30 | 2022-10-25 | 衡通瑞科技(深圳)有限公司 | Cement-based composite material prepared from sludge ash and preparation method thereof |
| CN116119980A (en) * | 2021-11-12 | 2023-05-16 | 李斌 | Cementing material of water supply plant sludge composite geopolymer and preparation method thereof |
| CN116535162A (en) * | 2023-05-08 | 2023-08-04 | 天津水泥工业设计研究院有限公司 | Ultra-high performance concrete prepared by multi-solid waste cooperation and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1045443A (en) * | 1996-08-01 | 1998-02-17 | Kyuichi Maruyama | Production of self-packing concrete |
| CN101830653A (en) * | 2010-04-23 | 2010-09-15 | 同济大学 | Sludge-high calcium fly ash alkali-excited cement and preparation method thereof |
| CN102260067A (en) * | 2011-05-25 | 2011-11-30 | 江苏龙腾工程设计有限公司 | Sintered brick with high content of tap water plant sludge and preparation method thereof |
| CN105110664A (en) * | 2015-08-05 | 2015-12-02 | 浙江工业职业技术学院 | Kaolin dyeing sludge geopolymer material and preparation method therefor |
| CN105541384A (en) * | 2015-12-28 | 2016-05-04 | 重庆建工第二建设有限公司 | Ultralight foam concrete and preparing method thereof |
| CN105985033A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Method for treating and utilizing electric furnace circulating water sludge |
| CN109665769A (en) * | 2018-11-22 | 2019-04-23 | 中建西部建设湖南有限公司 | A kind of super hardening high performance concrete and preparation method thereof |
-
2020
- 2020-10-12 CN CN202011082777.9A patent/CN112321222A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1045443A (en) * | 1996-08-01 | 1998-02-17 | Kyuichi Maruyama | Production of self-packing concrete |
| CN101830653A (en) * | 2010-04-23 | 2010-09-15 | 同济大学 | Sludge-high calcium fly ash alkali-excited cement and preparation method thereof |
| CN102260067A (en) * | 2011-05-25 | 2011-11-30 | 江苏龙腾工程设计有限公司 | Sintered brick with high content of tap water plant sludge and preparation method thereof |
| CN105985033A (en) * | 2015-02-28 | 2016-10-05 | 宝山钢铁股份有限公司 | Method for treating and utilizing electric furnace circulating water sludge |
| CN105110664A (en) * | 2015-08-05 | 2015-12-02 | 浙江工业职业技术学院 | Kaolin dyeing sludge geopolymer material and preparation method therefor |
| CN105541384A (en) * | 2015-12-28 | 2016-05-04 | 重庆建工第二建设有限公司 | Ultralight foam concrete and preparing method thereof |
| CN109665769A (en) * | 2018-11-22 | 2019-04-23 | 中建西部建设湖南有限公司 | A kind of super hardening high performance concrete and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113336521A (en) * | 2021-05-24 | 2021-09-03 | 浙江永坚新材料科技股份有限公司 | Ecological potassium magnesium phosphate cement-based repair material |
| CN113336521B (en) * | 2021-05-24 | 2022-10-04 | 浙江永坚新材料科技股份有限公司 | Ecological potassium magnesium phosphate cement-based repair material |
| CN116119980A (en) * | 2021-11-12 | 2023-05-16 | 李斌 | Cementing material of water supply plant sludge composite geopolymer and preparation method thereof |
| CN115231839A (en) * | 2022-06-30 | 2022-10-25 | 衡通瑞科技(深圳)有限公司 | Cement-based composite material prepared from sludge ash and preparation method thereof |
| CN115073036A (en) * | 2022-07-27 | 2022-09-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Toughening functional filler and high-toughness concrete using same for road and bridge engineering |
| CN116535162A (en) * | 2023-05-08 | 2023-08-04 | 天津水泥工业设计研究院有限公司 | Ultra-high performance concrete prepared by multi-solid waste cooperation and preparation method thereof |
| CN116535162B (en) * | 2023-05-08 | 2024-09-20 | 天津水泥工业设计研究院有限公司 | Ultra-high performance concrete prepared by multi-solid waste cooperation and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112321222A (en) | Ultrahigh-performance concrete prepared from tap water plant sludge powder | |
| Coppola et al. | Pre-packed alkali activated cement-free mortars for repair of existing masonry buildings and concrete structures | |
| Amnadnua et al. | Strength, water permeability, and heat evolution of high strength concrete made from the mixture of calcium carbide residue and fly ash | |
| CN103086667B (en) | A Design Method of C20 Grade High Performance Recycled Concrete Mix Proportion | |
| CN103253877B (en) | Composite cement and preparation method thereof | |
| CN110606720B (en) | Preparation method of high-content fly ash-based water permeable brick | |
| CN104961396B (en) | A fiber-reinforced mixed lightweight aggregate concrete for structure | |
| CN107777981A (en) | A kind of regeneration concrete and preparation method thereof | |
| CN102924005A (en) | Cementing materials with micro-expansion effect for mine filling | |
| CN111995341A (en) | Full-solid waste pavement concrete utilizing steel slag in large proportion and preparation method thereof | |
| Mithanthaya et al. | Influence of superplasticizer on the properties of geopolymer concrete using industrial wastes | |
| CN112142389A (en) | Composite cementitious material coal gangue pervious concrete and preparation method thereof | |
| CN104628344A (en) | Low-autogenous shrinkage and high-performance recycled concrete | |
| CN108164169A (en) | A kind of red mud-slag compound ground oligomer gel material for reinforcing soft foundation | |
| CN103922686B (en) | A kind of ardealite waste plastics slag materials for wall and preparation method | |
| CN110143795A (en) | A kind of PVA fiber modified rubber concrete and preparation method thereof | |
| CN115403350B (en) | Artificial fish reef material prepared from incineration slag and method for preparing fish reef by using artificial fish reef material | |
| CN116217193B (en) | Alkali-activated full-solid waste seawater sea sand coral concrete for island reefs and preparation process | |
| CN111116159B (en) | Phosphogypsum steel pipe concrete and preparation method thereof | |
| CN102101768B (en) | Dry powder plastering mortar made from ceramic waste residues and manufacturing method thereof | |
| CN115925359A (en) | Coal gangue base polymer green filling material and preparation method thereof | |
| CN102643107B (en) | Calcination-free desulfurized gypsum-based ceramsite concrete perforated brick | |
| CN102030507A (en) | Self-compacting micro-expanded steel tube concrete | |
| CN109020403A (en) | A kind of C80 high-strength concrete and preparation method thereof | |
| CN112321258A (en) | Green concrete prepared from waterworks sludge |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210205 |
|
| RJ01 | Rejection of invention patent application after publication |