CN104177034A - Neutral caustic soda slag ceramsite concrete and preparation method thereof - Google Patents
Neutral caustic soda slag ceramsite concrete and preparation method thereof Download PDFInfo
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- 239000002893 slag Substances 0.000 title claims abstract description 63
- 230000007935 neutral effect Effects 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 title description 12
- 235000011121 sodium hydroxide Nutrition 0.000 title 1
- 239000003513 alkali Substances 0.000 claims abstract description 37
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 26
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004568 cement Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 19
- 239000012190 activator Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 6
- 239000003469 silicate cement Substances 0.000 claims 4
- 239000011734 sodium Substances 0.000 claims 4
- 239000004115 Sodium Silicate Substances 0.000 claims 1
- 238000007580 dry-mixing Methods 0.000 claims 1
- 229910052911 sodium silicate Inorganic materials 0.000 claims 1
- 239000011398 Portland cement Substances 0.000 abstract description 24
- 238000002156 mixing Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- -1 ceramsite Substances 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 description 5
- 238000007667 floating Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229910015868 MSiO Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
本发明公开了一种中性钠碱矿渣陶粒混凝土及其制备方法，其由Na2SO4、水玻璃、矿渣、普通硅酸盐水泥、陶粒、砂和水等材料组成。具体制备方法：预湿、拌合粉料、制备碱激发剂、拌合骨料、振捣成型。它采用中性钠碱矿渣水泥代替传统的普通硅酸盐水泥，陶粒代替天然骨料。制备的混凝土在生产过程中工作性良好，并具有质轻、隔热、保温等优点，耐火性能和抗渗性能都很优异，而且环保性好。The invention discloses a neutral sodium-alkali slag ceramsite concrete and a preparation method thereof, which is composed of Na 2 SO 4 , water glass, slag, ordinary Portland cement, ceramsite, sand, water and other materials. The specific preparation method: pre-wet, powder mixing, alkali activator preparation, aggregate mixing, vibration molding. It uses neutral sodium-alkali slag cement instead of traditional ordinary Portland cement, and ceramsite instead of natural aggregate. The prepared concrete has good workability in the production process, has the advantages of light weight, heat insulation, heat preservation, etc., has excellent fire resistance and impermeability, and has good environmental protection.
Description
技术领域 technical field
本发明属于混凝土的制备领域，具体涉及一种中性钠碱矿渣陶粒混凝土及其制备方法。 The invention belongs to the field of concrete preparation, and in particular relates to a neutral sodium-alkali slag ceramsite concrete and a preparation method thereof.
背景技术 Background technique
我国十二五规划指出：“大幅度降低能源消耗强度和二氧化碳排放强度，加快低碳技术研发应用”。混凝土作为使用量最大的人工材料，其传统生产工艺所带来的问题日益凸显。目前混凝土业现在正以每年约80亿吨的速度消耗天然骨料。大量开山、采石已经严重破坏了自然山体的景观和绿色植被，挖河床取砂石改变了河床位置及形状，造成水土流失或河流改道等严重后果。许多国家和地区已经没有可取的碎石和砂子，混凝土的骨料资源出现了严重危机。 my country's Twelfth Five-Year Plan pointed out: "Significantly reduce the intensity of energy consumption and carbon dioxide emissions, and accelerate the development and application of low-carbon technologies." Concrete is the most widely used artificial material, and the problems caused by its traditional production process are becoming more and more prominent. The concrete industry is currently consuming natural aggregates at a rate of approximately 8 billion tons per year. A large number of mountain digging and quarrying have seriously damaged the natural mountain landscape and green vegetation. Digging the river bed to take sand and gravel has changed the position and shape of the river bed, causing serious consequences such as soil erosion or river diversion. Many countries and regions have run out of desirable gravel and sand, and there is a serious crisis in concrete aggregate resources.
另外，全球每年生产约33亿吨硅酸盐水泥，而生产1吨的硅酸盐水泥大约排放约1吨的CO2，并且消耗4～5GJ的能源。水泥行业已成为第3大温室效应的影响者（占5～8%），消耗5%全球能源。而且，硅酸盐水泥的生产工艺一般是两磨一烧，即原料（石灰石组分和粘土组分）要经过采掘、破碎、磨细和混匀制成生料，生料经1450℃的高温烧成熟料，熟料再经破碎，与石膏或其他混合材一起磨细成为水泥。这样的生产工艺决定了水泥生产必定要消耗大量的粘土资源，并且生产过程中会释放大量的CO2，对环境造成很大的污染。 In addition, the world produces about 3.3 billion tons of Portland cement every year, and the production of 1 ton of Portland cement emits about 1 ton of CO 2 and consumes 4-5 GJ of energy. The cement industry has become the third largest contributor to the greenhouse effect (accounting for 5-8%), consuming 5% of global energy. Moreover, the production process of Portland cement is generally two grindings and one burning, that is, the raw materials (limestone component and clay component) need to be excavated, crushed, ground and mixed to make raw meal, and the raw meal is subjected to a high temperature of 1450 ° C. The clinker is burned, and then the clinker is crushed and ground together with gypsum or other mixed materials to become cement. Such a production process determines that cement production must consume a large amount of clay resources, and a large amount of CO 2 will be released during the production process, causing great pollution to the environment.
矿渣对环境的污染严重。2007年中国钢产量突破4亿吨，每年产生的高炉水淬矿渣约1.2万吨。美国对矿渣治理有方，在20世纪50年代高炉矿渣的利用就达到排用平衡，而矿渣的主要用途就是在混凝土方面。 Slag seriously pollutes the environment. In 2007, China's steel output exceeded 400 million tons, and about 12,000 tons of water-quenched blast furnace slag was produced every year. The United States has good control over slag. In the 1950s, the use of blast furnace slag reached a balance of discharge and use, and the main use of slag is in concrete.
发明内容 Contents of the invention
本发明的目的在于针对现有技术的不足，提供一种中性钠碱矿渣陶粒混凝土及其制作方法。本发明以矿渣为主要原料，硅酸盐水泥作为激发剂的组分之一，制成碱矿渣水泥，硅酸盐水泥的用量只占中性钠碱矿渣水泥的5wt%左右，大大减少了硅酸盐水泥的用量；同时本发明采用Na2SO4和水玻璃复合作为激发剂，不仅解决了混凝土缓凝的问题，而且还使所配制的混凝土具有较高的力学性能；而采用陶粒取代混凝土中的骨料，减少了人类对砂石骨料的开采；本发明所制得的中性钠碱矿渣陶粒混凝土具有较好的工作性和力学性能，能取代传统混凝土应用于工程结构中，而且生产成本比传统的混凝土低，环保、经济效益显著，具有广阔的应用前景。 The object of the present invention is to provide a neutral sodium-alkali slag ceramsite concrete and a manufacturing method thereof for the deficiencies of the prior art. The present invention uses slag as the main raw material, and Portland cement is used as one of the components of the activator to make alkali slag cement. The amount of Portland cement only accounts for about 5wt% of the neutral sodium-alkali slag cement, which greatly reduces the amount of silicate. The amount of salt cement; at the same time, the present invention uses Na 2 SO 4 and water glass compound as the activator, which not only solves the problem of concrete retardation, but also makes the prepared concrete have higher mechanical properties; and uses ceramsite to replace The aggregate in concrete reduces the mining of sand and gravel aggregate by humans; the neutral sodium-alkali slag ceramsite concrete prepared by the invention has better workability and mechanical properties, and can replace traditional concrete and be used in engineering structures , and the production cost is lower than that of traditional concrete, environmental protection, economic benefits are remarkable, and it has broad application prospects.
为实现上述目的，本发明采用如下技术方案： To achieve the above object, the present invention adopts the following technical solutions:
一种中性钠碱矿渣陶粒混凝土，原料包括Na2SO4、水玻璃、矿渣、硅酸盐水泥、陶粒、砂和水。 A neutral sodium-alkali slag ceramsite concrete, raw materials include Na 2 SO 4 , water glass, slag, Portland cement, ceramsite, sand and water.
原料按重量分数计为：Na2SO4 1.77～1.96%、水玻璃0.59～0.65%、矿渣20.03～22.16%、硅酸盐水泥1.18～1.31%、陶粒33.37～34.41%、砂31.81～32.84%、水7.51～10.01%，以上各原料重量分数之和为100%。 The raw materials are calculated by weight fraction: Na 2 SO 4 1.77-1.96%, water glass 0.59-0.65%, slag 20.03-22.16%, Portland cement 1.18-1.31%, ceramsite 33.37-34.41%, sand 31.81-32.84% , Water 7.51～10.01%, the sum of the weight fractions of the above raw materials is 100%.
所述的水玻璃的分子式是Na2O·MSiO2，其模数M为0.8～1.6，固含量100%；这里所述模数即为SiO2与Na2O的分子量之比，即 ，其中、表示水玻璃中SiO2、Na2O的质量百分数，1.032为常数。可采用加NaOH的方法调低水玻璃模数。具体调整方法如下所述： The molecular formula of the water glass is Na 2 O·MSiO 2 , its modulus M is 0.8-1.6, and its solid content is 100%; the modulus here is the ratio of the molecular weight of SiO 2 to Na 2 O, namely ,in , Indicates the mass percentage of SiO 2 and Na 2 O in water glass, 1.032 is a constant. The modulus of water glass can be lowered by adding NaOH. The specific adjustment method is as follows:
假设原水玻璃中含SiO2 a%，Na2O b%，模数为m，则。现欲将水玻璃模数调整为n，设调整模数后的水玻璃含SiO2 a%，Na2O c%,则。由上述条件可得：，则调整模数后的水玻璃中Na2O的百分数为，因此需往原水玻璃中加入Na2O的百分数为，因此NaOH加入量为，其中62为Na2O分子量，40为NaOH分子量。 Assuming that raw water glass contains SiO 2 a%, Na 2 O b%, and the modulus is m, then . Now it is desired to adjust the modulus of water glass to n, assuming that the water glass after adjusting the modulus contains SiO 2 a%, Na 2 O c%, then . From the above conditions can be obtained: , then the percentage of Na 2 O in the water glass after adjusting the modulus is , so the percentage of Na 2 O that needs to be added to the raw water glass is , so the amount of NaOH added is , where 62 is the molecular weight of Na 2 O and 40 is the molecular weight of NaOH.
所述的硅酸盐水泥的标号为P.O 42.5。 The label of described portland cement is P.O 42.5.
中性钠碱矿渣陶粒混凝土的制备方法为：预湿、拌合粉料、制备碱激发剂、拌合骨料、振捣成型。 The preparation method of the neutral sodium-alkali slag ceramsite concrete includes: pre-wetting, mixing powder, preparing alkali activator, mixing aggregate, and vibrating to form.
制备方法的具体步骤为： The concrete steps of preparation method are:
（1）预湿：陶粒在水中预湿24h，并在实验前将陶粒滤干，并保持其饱和面干状态； (1) Pre-wet: Pre-wet the ceramsite in water for 24 hours, filter the ceramsite dry before the experiment, and keep its saturated surface dry;
（2）拌合粉料：将矿渣和硅酸盐水泥倒入搅拌机中干拌3分钟； (2) Mixing powder: Pour the slag and portland cement into the mixer and dry mix for 3 minutes;
（3）制备碱激发剂：将Na2SO4、水玻璃溶解在30℃以上的水中形成溶液，再将该溶液倒入步骤2中得到的混合物中，搅拌1分钟，制得碱矿渣水泥； (3) Preparation of alkali activator: Dissolve Na 2 SO 4 and water glass in water above 30°C to form a solution, then pour the solution into the mixture obtained in step 2, and stir for 1 minute to obtain alkali slag cement;
（4）拌合骨料：将砂和陶粒倒入搅拌机中搅拌2.5分钟； (4) Aggregate mixing: pour the sand and ceramsite into the mixer and stir for 2.5 minutes;
（5）振捣成型：振捣采用振动台振实和手工压实结合，振捣时间以拌合物捣实和避免轻骨料上浮为原则，宜为10～30秒。 (5) Vibration molding: Vibration adopts a combination of vibrating table vibration and manual compaction. The vibration time is based on the principle of compacting the mixture and avoiding the floating of light aggregates. It should be 10 to 30 seconds.
本发明配方中各组分的选择依据和作用：碱矿渣水泥是一种可持续发展胶凝材料，与传统硅酸盐水泥的煅烧工艺相比, 碱矿渣水泥不需要消耗大量的粘土资源和能源，并且能消耗工业废料（如矿渣），有利于自然环境的保护和能源的合理利用，又能改善矿渣废料过剩污染环境的现状；而且将陶粒取代天然骨料可以减少因采砂石对环境的破坏，另外陶粒具有质轻、保温、隔热等优势。 The selection basis and function of each component in the formula of the present invention: Alkali slag cement is a sustainable cementing material. Compared with the calcination process of traditional Portland cement, alkali slag cement does not need to consume a large amount of clay resources and energy. , and can consume industrial waste (such as slag), which is conducive to the protection of the natural environment and the rational use of energy, and can also improve the current situation of excessive slag waste polluting the environment; and replacing natural aggregate with ceramsite can reduce the impact on the environment caused by mining sand In addition, ceramsite has the advantages of light weight, heat preservation and heat insulation.
中性钠碱矿渣陶粒混凝土具有传统混凝土所不具有的优势：(1)以矿渣为主要原料的碱矿渣水泥价格低廉，碱矿渣水泥的价格相较于普通硅酸盐水泥大约能降低10～30%左右；(2) 碱矿渣水泥的原材料来源广泛并且绿色环保，大大降低了普通水泥生产过程中带来的环境污染，同时可以消耗大量的工业废渣；(3)碱矿渣水泥的需水性（20%～24%）比普通硅酸盐水泥的需水性（25%～28%）低，即在相同水灰比条件下，碱矿渣水泥混凝土的流动性要优于普通硅酸盐水泥混凝土；(4)陶粒的强度相较于天然骨料低很多，但是仍然可以满足C20～C50混凝土的使用要求，与此同时，其密度比普通混凝土低20～30%，并且陶粒混凝土具有保温隔热的优异性能；(5)耐热性能优异，在650℃高温下，陶粒混凝土的强度损失10%～15%，耐火时间约4h，而普通混凝土的强度损失25%～65%，耐火时间约1h；(6) 抗渗性能优异：与普通硅酸盐水泥混凝土相比，碱矿渣水泥混凝土具有更低的水和氯离子渗透性，对侵蚀性介质，如酸、硫酸盐、氯离子的抗侵蚀性更好。 Neutral sodium-alkali slag ceramsite concrete has advantages that traditional concrete does not have: (1) The price of alkali slag cement with slag as the main raw material is low, and the price of alkali slag cement can be reduced by about 10~ About 30%; (2) Alkali slag cement has a wide range of raw materials and is environmentally friendly, which greatly reduces the environmental pollution caused by ordinary cement production, and can consume a large amount of industrial waste at the same time; (3) The water demand of alkali slag cement ( 20% to 24%) is lower than the water demand of ordinary Portland cement (25% to 28%), that is, under the same water-cement ratio, the fluidity of alkali slag cement concrete is better than that of ordinary Portland cement concrete; (4) The strength of ceramsite is much lower than that of natural aggregate, but it can still meet the requirements of C20-C50 concrete. At the same time, its density is 20-30% lower than that of ordinary concrete, and ceramsite concrete has thermal insulation. Excellent heat performance; (5) Excellent heat resistance. At 650°C, the strength of ceramsite concrete loses 10% to 15%, and the fire resistance time is about 4 hours, while the strength of ordinary concrete loses 25% to 65%. About 1h; (6) Excellent impermeability: Compared with ordinary Portland cement concrete, alkali slag cement concrete has lower water and chloride ion permeability, and is resistant to aggressive media such as acid, sulfate, and chloride ions. Better corrosion resistance.
本发明的新型中性钠碱矿渣陶粒混凝土优点还在于： The advantage of the novel neutral sodium-alkali slag ceramsite concrete of the present invention also lies in:
（1）以矿渣为主要原料的碱矿渣水泥价格相对低廉，而且对环境污染小； (1) Alkali slag cement, which uses slag as the main raw material, is relatively cheap and has little environmental pollution;
（2）所采用的材料大部分为绿色环保材料，降低了能耗； (2) Most of the materials used are green and environmentally friendly materials, which reduces energy consumption;
（3）在满足一般混凝土施工要求的情况下，具有质轻保温隔热等优点； (3) In the case of meeting the general concrete construction requirements, it has the advantages of light weight, heat preservation and heat insulation;
（4）耐火性能、抗渗性能优异，力学性能满足使用要求。 (4) It has excellent fire resistance and impermeability, and its mechanical properties meet the requirements of use.
具体实施例：Specific examples:
本发明用下列实施例来进一步说明本发明，但本发明的保护范围并不限于下列实施例。 The present invention further illustrates the present invention with following examples, but protection scope of the present invention is not limited to following examples.
一种中性钠碱矿渣陶粒混凝土由Na2SO4、水玻璃、矿渣、普通硅酸盐水泥、陶粒、砂和水等材料组成；原料按照按照重量分数计为：Na2SO4 1.77～1.96%、水玻璃0.59～0.65%、矿渣20.03～22.16%、硅酸盐水泥1.18～1.31%、陶粒33.37～34.41%、砂31.81～32.84%、水7.51～10.01%，水玻璃分子式是Na2O·MSiO2，固体含量为100%，模数M为0.8～1.6。 A neutral sodium-alkali slag ceramsite concrete is composed of Na 2 SO 4 , water glass, slag, ordinary Portland cement, ceramsite, sand and water; raw materials are calculated according to weight fraction: Na 2 SO 4 1.77 ～1.96%, water glass 0.59～0.65%, slag 20.03～22.16%, Portland cement 1.18～1.31%, ceramsite 33.37～34.41%, sand 31.81～32.84%, water 7.51～10.01%, the molecular formula of water glass is Na 2 O·MSiO 2 , the solid content is 100%, and the modulus M is 0.8-1.6.
制备方法的具体步骤为： The concrete steps of preparation method are:
（1） 预湿：陶粒在净水中预湿24h，并在实验前将陶粒滤干，并保持其饱和面干状态； (1) Pre-wet: The ceramsite is pre-wetted in clean water for 24 hours, and the ceramsite is filtered before the experiment, and the saturated surface is kept dry;
（2） 拌合粉料：将矿渣和硅酸盐水泥倒入搅拌机中干拌3分钟； (2) Mixing powder: Pour the slag and Portland cement into the mixer and dry mix for 3 minutes;
（3） 制备碱激发剂：将Na2SO4、水玻璃溶解在30℃以上的水中形成溶液，再将该溶液倒入步骤2中得到的混合物中，搅拌1分钟，制得碱矿渣水泥； (3) Preparation of alkali activator: Dissolve Na 2 SO 4 and water glass in water above 30°C to form a solution, then pour the solution into the mixture obtained in step 2, and stir for 1 minute to obtain alkali slag cement;
（4） 拌合骨料：将砂和陶粒倒入搅拌机中搅拌2.5分钟； (4) Aggregate mixing: Pour the sand and ceramsite into the mixer and stir for 2.5 minutes;
（5） 振捣成型：振捣采用振动台振实和手工压实结合，振捣时间以拌合物捣实和避免轻骨料上浮为原则，宜为10～30秒。 (5) Vibration molding: Vibration adopts a combination of vibrating table vibration and manual compaction. The vibration time is based on the principle of compacting the mixture and avoiding the floating of light aggregates. It should be 10 to 30 seconds.
实施例1Example 1
中性钠碱矿渣陶粒混凝土其原料为：Na2SO4 1.96%、水玻璃 （模数为1.2，固含量为100%）0.65 %、矿渣21.51%、硅酸盐水泥1.27%、陶粒33.74%、砂32.01%、水8.86%。 The raw materials of neutral sodium-alkali slag ceramsite concrete are: Na 2 SO 4 1.96%, water glass (modulus 1.2, solid content 100%) 0.65%, slag 21.51%, Portland cement 1.27%, ceramsite 33.74% %, sand 32.01%, water 8.86%.
制备方法的具体步骤为： The concrete steps of preparation method are:
（1） 预湿：陶粒在净水中预湿24h，并在实验前将陶粒滤干，并保持其饱和面干状态； (1) Pre-wet: The ceramsite is pre-wetted in clean water for 24 hours, and the ceramsite is filtered before the experiment, and the saturated surface is kept dry;
（2） 拌合粉料：将矿渣和硅酸盐水泥倒入搅拌机中干拌3分钟； (2) Mixing powder: Pour the slag and Portland cement into the mixer and dry mix for 3 minutes;
（3） 制备碱激发剂：将Na2SO4、水玻璃溶解在30℃以上的水中形成溶液，再将该溶液倒入步骤2中得到的混合物中，搅拌1分钟，制得碱矿渣水泥； (3) Preparation of alkali activator: Dissolve Na 2 SO 4 and water glass in water above 30°C to form a solution, then pour the solution into the mixture obtained in step 2, and stir for 1 minute to obtain alkali slag cement;
（4） 拌合骨料：将砂和陶粒倒入搅拌机中搅拌2.5分钟； (4) Aggregate mixing: Pour the sand and ceramsite into the mixer and stir for 2.5 minutes;
（5） 振捣成型：振捣采用振动台振实和手工压实结合，振捣时间以拌合物捣实和避免轻骨料上浮为原则，本次振捣时间为20s。 (5) Vibration molding: Vibration adopts a combination of vibrating table vibration and manual compaction. The vibration time is based on the principle of compacting the mixture and avoiding the floating of light aggregates. This time the vibration time is 20s.
实施例2Example 2
中性钠碱矿渣陶粒混凝土原料按照按照重量分数计为：Na2SO4 1.77%、水玻璃0.59%（固体含量为100%、模数为0.8）、矿渣22.16%、硅酸盐水泥1.31%、陶粒34.41%、砂32.25%、水7.51%。 The raw materials of neutral sodium-alkali slag ceramsite concrete are calculated by weight fraction: Na 2 SO 4 1.77%, water glass 0.59% (solid content is 100%, modulus is 0.8), slag 22.16%, Portland cement 1.31% , Ceramsite 34.41%, Sand 32.25%, Water 7.51%.
制备方法的具体步骤为： The concrete steps of preparation method are:
（1）预湿：陶粒在净水中预湿24h，并在实验前将陶粒滤干，并保持其饱和面干状态； (1) Pre-wet: The ceramsite is pre-wetted in clean water for 24 hours, and the ceramsite is filtered before the experiment, and the saturated surface is kept dry;
（2）拌合粉料：将矿渣和硅酸盐水泥倒入搅拌机中干拌3分钟； (2) Mixing powder: Pour the slag and portland cement into the mixer and dry mix for 3 minutes;
（3）制备碱激发剂：将Na2SO4、水玻璃溶解在30℃以上的水中形成溶液，再将该溶液倒入步骤2中得到的混合物中，搅拌1分钟，制得碱矿渣水泥； (3) Preparation of alkali activator: Dissolve Na 2 SO 4 and water glass in water above 30°C to form a solution, then pour the solution into the mixture obtained in step 2, and stir for 1 minute to obtain alkali slag cement;
（4）拌合骨料：将砂和陶粒倒入搅拌机中搅拌2.5分钟； (4) Aggregate mixing: pour the sand and ceramsite into the mixer and stir for 2.5 minutes;
（5）振捣成型：振捣采用振动台振实和手工压实结合，振捣时间以拌合物捣实和避免轻骨料上浮为原则，本次振捣时间为10秒。 (5) Vibration molding: Vibration adopts a combination of vibrating table vibration and manual compaction. The vibration time is based on the principle of compacting the mixture and avoiding the floating of light aggregates. This time the vibration time is 10 seconds.
实施例3Example 3
中性钠碱矿渣陶粒混凝土原料按照按照重量分数计为：Na2SO4 1.95%、水玻璃0.62%（固体含量为100%，模数M为1.6）、矿渣20.03%、硅酸盐水泥1.18%、陶粒33.37%、砂32.84%、水10.01%。 The raw materials of neutral sodium-alkali slag ceramsite concrete are calculated by weight fraction: Na 2 SO 4 1.95%, water glass 0.62% (solid content is 100%, modulus M is 1.6), slag 20.03%, Portland cement 1.18 %, ceramsite 33.37%, sand 32.84%, water 10.01%.
制备方法的具体步骤为： The concrete steps of preparation method are:
（1）预湿：陶粒在净水中预湿24h，并在实验前将陶粒滤干，并保持其饱和面干状态； (1) Pre-wet: The ceramsite is pre-wetted in clean water for 24 hours, and the ceramsite is filtered before the experiment, and the saturated surface is kept dry;
（2）拌合粉料：将矿渣和硅酸盐水泥倒入搅拌机中干拌3分钟； (2) Mixing powder: Pour the slag and portland cement into the mixer and dry mix for 3 minutes;
（3）制备碱激发剂：将Na2SO4、水玻璃溶解在30℃以上的水中形成溶液，再将该溶液倒入步骤2中得到的混合物中，搅拌1分钟，制得碱矿渣水泥； (3) Preparation of alkali activator: Dissolve Na 2 SO 4 and water glass in water above 30°C to form a solution, then pour the solution into the mixture obtained in step 2, and stir for 1 minute to obtain alkali slag cement;
（4）拌合骨料：将砂和陶粒倒入搅拌机中搅拌2.5分钟； (4) Aggregate mixing: pour the sand and ceramsite into the mixer and stir for 2.5 minutes;
（5）振捣成型：振捣采用振动台振实和手工压实结合，振捣时间以拌合物捣实和避免轻骨料上浮为原则，本次振捣时间为30s。 (5) Vibration molding: Vibration adopts a combination of vibrating table vibration and manual compaction. The vibration time is based on the principle of compacting the mixture and avoiding the floating of light aggregates. This time the vibration time is 30s.
以上所述仅为本发明的较佳实施例，凡依本发明申请专利范围所做的均等变化与修饰，皆应属本发明的涵盖范围。 The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.
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| CN107487996A (en) * | 2016-06-12 | 2017-12-19 | 西华大学 | A kind of high-strength baking-free ceramicite of slag and preparation method thereof |
| CN108546050A (en) * | 2018-07-02 | 2018-09-18 | 广东清大同科环保技术有限公司 | A kind of fly ash base concrete |
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