技术领域Technical field
本发明涉及混凝土制备领域，具体涉及一种适用于装配式路面的柔性混凝土及其制备方法和应用。The invention relates to the field of concrete preparation, and in particular to a flexible concrete suitable for assembled pavement and its preparation method and application.
背景技术Background technique
传统路面工程一般采用现场浇筑的方式铺筑水泥路面，或者采用现场连续摊铺的方式铺筑沥青路面，然而，传统路面施工现场作业效率低、工期长，对现场人工与机具的需求大、要求高，对施工现场周边的居民干扰影响大，且后期维护难以做到精准快速，难以适应智慧道路的发展。预制装配式铺面技术提供了一个很好的解决方案。Traditional pavement projects generally use on-site pouring to lay cement pavement, or use on-site continuous paving to pave asphalt pavement. However, traditional pavement construction has low on-site operation efficiency and long construction period, which requires large and demanding on-site labor and machinery. High, it has a great impact on residents around the construction site, and it is difficult to achieve accurate and fast post-maintenance, making it difficult to adapt to the development of smart roads. Prefabricated paving technology offers a great solution.
然而，传统水泥混凝土材料刚度大，所形成的混凝土预制路面板抗弯性能差，对于路基容许差异变形的适应性问题无法解决，极大地限制了混凝土装配式路面的推广和应用。此外，目前市政道路主要为沥青路面，但受交通渠化的影响，在红绿灯路口、公交站台及公交专用道上，沥青路面使用一段时间后不可避免出现车辙病害，这是由沥青路面的天然属性造成的。因此，这些路段的铺装也常采用混凝土，但传统的混凝土路面与沥青路面交接处美观性不足影响市容，且上述位置为易堵点，维修换板易造成交通拥堵，社会影响大。However, traditional cement concrete materials have high stiffness, and the resulting concrete precast pavement panels have poor bending resistance and cannot solve the problem of adaptability to allow differential deformation of the roadbed, which greatly limits the promotion and application of concrete prefabricated pavements. In addition, currently municipal roads are mainly asphalt pavement. However, due to the influence of traffic channelization, rutting diseases will inevitably occur on asphalt pavement at traffic light intersections, bus stops and bus lanes after being used for a period of time. This is caused by the natural properties of asphalt pavement. of. Therefore, concrete is often used for paving these road sections. However, the intersection of traditional concrete pavement and asphalt pavement is not aesthetically pleasing and affects the city appearance. Moreover, the above-mentioned locations are easy to block, and maintenance and replacement of panels can easily cause traffic congestion and have a great social impact.
中国专利文献CN202011037700.X提供了一种装配式墙体专用湿拌混凝土及其制备方法，由以下重量分数的原料组成：水泥50～80份、碎石粉20～30份、碎石子15～30份、细砂25～40份、水泥增粘剂5～10份、水泥降粘剂2～6份、硫酸盐1～3份、水100～150份；但是该混凝土抗拉强度不足，容易劈裂。Chinese patent document CN202011037700. 30 parts of fine sand, 25 to 40 parts of fine sand, 5 to 10 parts of cement tackifier, 2 to 6 parts of cement viscosity reducer, 1 to 3 parts of sulfate, and 100 to 150 parts of water; however, the concrete has insufficient tensile strength and is easy to Split.
中国专利文献CN202211665846.8公开了一种装配式建筑用轻质高强高耐久性混凝土及其制备方法，组分包括水泥、水、细骨料、轻粗骨料、复合掺合料、减水剂、聚丙烯腈纤维和玄武岩纤维；但是该混凝土弹性模量偏高，韧性偏低。Chinese patent document CN202211665846.8 discloses a lightweight, high-strength and high-durability concrete for prefabricated buildings and a preparation method thereof. The components include cement, water, fine aggregate, light coarse aggregate, composite admixture, and water-reducing agent. , polyacrylonitrile fiber and basalt fiber; however, the concrete has a high elastic modulus and low toughness.
鉴于此，亟需提出一种低弹模、高韧性并满足运输、吊装和现场拼装要求并兼具沥青混凝土和水泥混凝土材料特性的柔性混凝土材料用于预制路面板，以期解决复杂交通量路面车辙、预制装配式铺面与支承基础容许变形协调问题，从而推动装配式路面的快速发展和规模化应用。In view of this, it is urgent to propose a flexible concrete material with low elastic modulus, high toughness, which can meet the requirements of transportation, hoisting and on-site assembly, and has the characteristics of asphalt concrete and cement concrete materials for precast road panels, in order to solve the problem of complex traffic volume road rutting. , the problem of coordination between the allowable deformation of prefabricated pavement and the supporting foundation, thereby promoting the rapid development and large-scale application of prefabricated pavement.
发明内容Contents of the invention
为了解决现有技术存在的不足，本发明的目的在于提供一种装配式路面的柔性混凝土材料及其制备方法和应用，制备出能满足运输、吊装和现场拼装要求并兼具沥青混凝土和水泥混凝土材料特性的柔性混凝土预制路面板，能有效解决复杂交通量路面车辙、预制装配式铺面与支承基础容许变形协调的问题。In order to solve the shortcomings of the existing technology, the purpose of the present invention is to provide a flexible concrete material for assembled pavement and its preparation method and application, so as to prepare a flexible concrete material that can meet the requirements of transportation, hoisting and on-site assembly and has both asphalt concrete and cement concrete. Flexible concrete precast pavement panels with material characteristics can effectively solve the problem of rutting on pavement with complex traffic volume, coordination of allowable deformation of prefabricated pavement and supporting foundation.
为了实现上述目的，本发明采用如下技术方案：In order to achieve the above objects, the present invention adopts the following technical solutions:
一种适用于装配式路面的柔性混凝土材料，以重量份数计，由以下组分制成：改性水泥435～460份、粉煤灰20～40份、引气剂0.3～0.5份、减水剂4～6份、粗骨料1100～1200份、细骨料540～560份、改性橡胶-纤维分散液35～60份、水190～230份。A flexible concrete material suitable for prefabricated pavement, made of the following components in parts by weight: 435 to 460 parts of modified cement, 20 to 40 parts of fly ash, 0.3 to 0.5 parts of air-entraining agent, less 4 to 6 parts of water agent, 1100 to 1200 parts of coarse aggregate, 540 to 560 parts of fine aggregate, 35 to 60 parts of modified rubber-fiber dispersion, and 190 to 230 parts of water.
优选的，所述粉煤灰细密值＜13％，含水量＜1.0％，SO3体积分数＜4.5％，溶水率＜98％。Preferably, the fly ash fineness value is <13%, the water content is <1.0%, theSO3 volume fraction is <4.5%, and the water solubility rate is <98%.
优选的，所述粗骨料为粒径2～20mm级配良好的碎石；所述细骨料为细度模数3.0～3.6的机制砂，表观密度2500～2700kg/m3。Preferably, the coarse aggregate is well-graded gravel with a particle size of 2 to 20 mm; the fine aggregate is machine-made sand with a fineness modulus of 3.0 to 3.6, and an apparent density of 2500 to 2700 kg/m3 .
优选的，所述改性水泥制备方法为：向将环氧树脂加入到水泥中，搅拌均匀得到改性水泥；环氧树脂、水泥的体积比为10～20：100。Preferably, the modified cement preparation method is: add epoxy resin to cement, stir evenly to obtain modified cement; the volume ratio of epoxy resin to cement is 10-20:100.
优选的，所述改性橡胶-纤维分散液的制备方法如下：将橡胶颗粒加入到10～20wt％NaOH溶液中浸泡12～24h，清洗、晾干，得到改性橡胶；玄武岩纤维加入到40～60wt％淀粉磷酸钠溶液中浸渍12～24h，晾干得到改性纤维；将改性橡胶、改性纤维加入到EVA乳液中，然后加入PAM，搅拌、超声振动10～20min，得改性到橡胶-纤维分散液。Preferably, the preparation method of the modified rubber-fiber dispersion is as follows: add rubber particles to 10-20wt% NaOH solution, soak for 12-24h, clean and dry to obtain modified rubber; basalt fiber is added to 40-20wt% NaOH solution. Dip in 60wt% starch sodium phosphate solution for 12 to 24 hours, and dry to obtain modified fiber; add modified rubber and modified fiber to EVA emulsion, then add PAM, stir, and ultrasonic vibration for 10 to 20 minutes to obtain modified rubber -Fiber dispersion.
优选的，所述橡胶颗粒为10～80目的废旧轮胎橡胶颗粒，表观密度740～760kg/m3。Preferably, the rubber particles are scrap tire rubber particles of 10 to 80 mesh, with an apparent density of 740 to 760 kg/m3 .
优选的，所述玄武岩纤维平均长度为12～20mm，直径为10～25μm，密度为2.60～2.75g/cm3，抗拉强度1000～1100MPa，弹性模量6～10GPa，断裂伸长率＜3％。Preferably, the average length of the basalt fiber is 12-20mm, the diameter is 10-25μm, the density is 2.60-2.75g/cm3 , the tensile strength is 1000-1100MPa, the elastic modulus is 6-10GPa, and the elongation at break is <3 %.
优选的，改性橡胶、改性纤维、EVA乳液、PAM的重量为1：1.5～2：3～5：0.5～1。Preferably, the weight of modified rubber, modified fiber, EVA emulsion and PAM is 1:1.5~2:3~5:0.5~1.
本发明还要求保护一种所述柔性混凝土的制备方法，包括如下步骤：The present invention also claims a method for preparing the flexible concrete, which includes the following steps:
(1)按重量份将粗骨料、细骨料、改性橡胶-纤维分散液、改性水泥、粉煤灰、水依次加入到搅拌机中，干拌3～5min，得到浆料；(1) Add coarse aggregate, fine aggregate, modified rubber-fiber dispersion, modified cement, fly ash, and water to the mixer in sequence by weight, and dry mix for 3 to 5 minutes to obtain a slurry;
(2)将减水剂、引气剂加入到浆料中，搅拌3～5min，得到柔性混凝土材料。(2) Add water-reducing agent and air-entraining agent to the slurry and stir for 3 to 5 minutes to obtain flexible concrete material.
本发明还要求保护一种所述柔性混凝土在装配式路面中的应用。The present invention also claims an application of the flexible concrete in assembled pavement.
与现有技术相比，本发明具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
1)本发明提供了一种柔性混凝土材料，通过改性水泥、改性橡胶-纤维分散液的使用，制备出能满足运输、吊装和现场拼装要求并兼具沥青混凝土和水泥混凝土材料特性的柔性混凝土预制路面板，有效解决了复杂交通量路面车辙、预制装配式铺面与支承基础容许变形协调的问题，推动装配式路面的快速发展和规模化应用。1) The present invention provides a flexible concrete material. Through the use of modified cement and modified rubber-fiber dispersion, a flexible concrete material can be prepared that can meet the requirements of transportation, hoisting and on-site assembly and has the characteristics of asphalt concrete and cement concrete materials. Concrete precast pavement panels effectively solve the problem of complex traffic volume road ruts, coordination of prefabricated pavement and allowable deformation of the supporting foundation, and promote the rapid development and large-scale application of prefabricated pavement.
2)本发明提供了一种改性橡胶-纤维分散液，将其掺入到混凝土材料中，可以充分发挥橡胶和纤维两种材料的优势，使混凝土具有良好的延性、韧性、抗裂性和耐损伤性，得到一种低弹模、高韧性的柔性混凝土材料。2) The present invention provides a modified rubber-fiber dispersion, which can be incorporated into concrete materials to give full play to the advantages of rubber and fiber materials, so that the concrete has good ductility, toughness, crack resistance and Damage resistance, resulting in a flexible concrete material with low elastic modulus and high toughness.
3)本发明提供了一种改性橡胶-纤维分散液，采用NaOH溶液对橡胶颗粒进行预处理能改善橡胶集料表面的亲水性和混凝土中界面过渡区的性能，有效提高橡胶集料与水泥石之间的粘结强度，影响水分在混凝土中的迁移行为，进而影响混凝土的吸水性与干燥收缩，使得混凝土的和易性更好，进而减少掺入橡胶颗粒带来的混凝土强度损失；利用淀粉磷酸钠对玄武岩纤维进行改性，磷酸基与纤维表面发生化学键合，能够增加纤维表面粗糙度和比表面积，还能提高玄武岩纤维的抗拉强度和断裂伸长率，提升混凝土材料的柔韧性；EVA乳液具有较强的耐酸碱腐蚀性和较强的粘结性，可以增强橡胶与玄武岩纤维之间的粘结，通过分散剂和超声振动，使得橡胶和玄武岩纤维在EVA乳液中均匀分布，最终得到改性橡胶和改性玄武岩纤维共混物。3) The present invention provides a modified rubber-fiber dispersion. Pretreatment of rubber particles with NaOH solution can improve the hydrophilicity of the rubber aggregate surface and the performance of the interface transition zone in concrete, effectively improving the relationship between the rubber aggregate and the concrete. The bonding strength between cement stones affects the migration behavior of water in concrete, which in turn affects the water absorption and drying shrinkage of concrete, making the workability of concrete better, thereby reducing the loss of concrete strength caused by the addition of rubber particles; Starch sodium phosphate is used to modify basalt fiber. The phosphate group is chemically bonded with the fiber surface, which can increase the fiber surface roughness and specific surface area. It can also increase the tensile strength and breaking elongation of the basalt fiber, and improve the flexibility of concrete materials. properties; EVA emulsion has strong acid and alkali corrosion resistance and strong adhesion, which can enhance the bonding between rubber and basalt fiber. Through dispersant and ultrasonic vibration, the rubber and basalt fiber can be evenly distributed in the EVA emulsion. Distribution, and finally a blend of modified rubber and modified basalt fiber is obtained.
4)本发明提供了一种改性水泥，环氧树脂能够影响水泥主要矿物的初始溶解过程，降低水化放热速率，延长水泥基材料的凝结时间，促进水泥基材料中硅酸盐晶体的增长，增强水泥基材料的抗折强度和韧性。4) The present invention provides a modified cement. The epoxy resin can affect the initial dissolution process of the main minerals in the cement, reduce the hydration heat release rate, prolong the setting time of the cement-based material, and promote the formation of silicate crystals in the cement-based material. Growth, enhancing the flexural strength and toughness of cement-based materials.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚，以下结合实施例，对本发明作进一步的详细说明。当然，此处所描述的具体实施例仅仅用于解释本发明，并不用于限定本发明。In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with examples. Of course, the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.
如无特殊说明外，本发明中的化学试剂和材料均通过市场途径购买或通过市场途径购买的原料合成。Unless otherwise specified, the chemical reagents and materials in the present invention are all purchased from the market or synthesized from raw materials purchased from the market.
下面通过具体实施例，来对本发明作进一步的说明。The present invention will be further described below through specific examples.
实施例1Example 1
一种适用于装配式路面的柔性混凝土材料的制备方法，包括如下步骤：A method for preparing flexible concrete materials suitable for assembled pavement, including the following steps:
(1)将10目橡胶颗粒加入到20wt％NaOH溶液中浸泡24h，清洗、晾干，得到改性橡胶；玄武岩纤维加入到60wt％淀粉磷酸钠溶液中浸渍24h，晾干得到改性纤维；将10g改性橡胶、20g改性纤维加入到50g EVA乳液中，然后加入10g PAM，搅拌、超声振动20min，得改性到橡胶-纤维分散液；(1) Add 10 mesh rubber particles to 20wt% NaOH solution and soak for 24 hours, clean and dry to obtain modified rubber; add basalt fiber to 60wt% starch sodium phosphate solution and soak for 24 hours, dry to obtain modified fiber; Add 10g modified rubber and 20g modified fiber to 50g EVA emulsion, then add 10g PAM, stir and ultrasonically vibrate for 20 minutes to obtain a modified rubber-fiber dispersion;
(2)向将20g环氧树脂E51加入到100g PO42.5普通硅酸盐水泥中，搅拌均匀得到改性水泥；(2) Add 20g epoxy resin E51 to 100g PO42.5 ordinary Portland cement, stir evenly to obtain modified cement;
(3)按重量份将1133g粗骨料、549g细骨料、45g改性橡胶-纤维分散液、447g改性水泥、40g粉煤灰、210g水依次加入到搅拌机中，干拌5min，得到浆料；(3) Add 1133g coarse aggregate, 549g fine aggregate, 45g modified rubber-fiber dispersion, 447g modified cement, 40g fly ash, and 210g water to the mixer in sequence by weight, and dry mix for 5 minutes to obtain a slurry material;
(4)将4g减水剂、0.5g引气剂加入到浆料中，搅拌5min，得到柔性混凝土材料。(4) Add 4g of water-reducing agent and 0.5g of air-entraining agent to the slurry and stir for 5 minutes to obtain a flexible concrete material.
实施例2Example 2
一种适用于装配式路面的柔性混凝土材料的制备方法，包括如下步骤：A method for preparing flexible concrete materials suitable for assembled pavement, including the following steps:
(1)将10目橡胶颗粒加入到20wt％NaOH溶液中浸泡24h，清洗、晾干，得到改性橡胶；玄武岩纤维加入到60wt％淀粉磷酸钠溶液中浸渍24h，晾干得到改性纤维；将10g改性橡胶、20g改性纤维加入到50g EVA乳液中，然后加入10g PAM，搅拌、超声振动20min，得改性到橡胶-纤维分散液；(1) Add 10 mesh rubber particles to 20wt% NaOH solution and soak for 24 hours, clean and dry to obtain modified rubber; add basalt fiber to 60wt% starch sodium phosphate solution and soak for 24 hours, dry to obtain modified fiber; Add 10g modified rubber and 20g modified fiber to 50g EVA emulsion, then add 10g PAM, stir and ultrasonically vibrate for 20 minutes to obtain a modified rubber-fiber dispersion;
(2)向将20g环氧树脂E51加入到100g PO42.5普通硅酸盐水泥中，搅拌均匀得到改性水泥；(2) Add 20g epoxy resin E51 to 100g PO42.5 ordinary Portland cement, stir evenly to obtain modified cement;
(3)按重量份将1133g粗骨料、549g细骨料、35g改性橡胶-纤维分散液、447g改性水泥、40g粉煤灰、210g水依次加入到搅拌机中，干拌5min，得到浆料；(3) Add 1133g coarse aggregate, 549g fine aggregate, 35g modified rubber-fiber dispersion, 447g modified cement, 40g fly ash, and 210g water to the mixer in sequence by weight, and dry mix for 5 minutes to obtain a slurry material;
(4)将4g减水剂、0.5g引气剂加入到浆料中，搅拌5min，得到柔性混凝土材料。(4) Add 4g of water-reducing agent and 0.5g of air-entraining agent to the slurry and stir for 5 minutes to obtain a flexible concrete material.
实施例3Example 3
一种适用于装配式路面的柔性混凝土材料的制备方法，包括如下步骤：A method for preparing flexible concrete materials suitable for assembled pavement, including the following steps:
(1)将10目橡胶颗粒加入到20wt％NaOH溶液中浸泡24h，清洗、晾干，得到改性橡胶；玄武岩纤维加入到60wt％淀粉磷酸钠溶液中浸渍24h，晾干得到改性纤维；将10g改性橡胶、20g改性纤维加入到50g EVA乳液中，然后加入10g PAM，搅拌、超声振动20min，得改性到橡胶-纤维分散液；(1) Add 10 mesh rubber particles to 20wt% NaOH solution and soak for 24 hours, clean and dry to obtain modified rubber; add basalt fiber to 60wt% starch sodium phosphate solution and soak for 24 hours, dry to obtain modified fiber; Add 10g modified rubber and 20g modified fiber to 50g EVA emulsion, then add 10g PAM, stir and ultrasonically vibrate for 20 minutes to obtain a modified rubber-fiber dispersion;
(2)向将20g环氧树脂E51加入到100g PO42.5普通硅酸盐水泥中，搅拌均匀得到改性水泥；(2) Add 20g epoxy resin E51 to 100g PO42.5 ordinary Portland cement, stir evenly to obtain modified cement;
(3)按重量份将1133g粗骨料、549g细骨料、60g改性橡胶-纤维分散液、447g改性水泥、40g粉煤灰、210g水依次加入到搅拌机中，干拌5min，得到浆料；(3) Add 1133g coarse aggregate, 549g fine aggregate, 60g modified rubber-fiber dispersion, 447g modified cement, 40g fly ash, and 210g water to the mixer in sequence by weight, and dry mix for 5 minutes to obtain a slurry material;
(4)将4g减水剂、0.5g引气剂加入到浆料中，搅拌5min，得到柔性混凝土材料。(4) Add 4g of water-reducing agent and 0.5g of air-entraining agent to the slurry and stir for 5 minutes to obtain a flexible concrete material.
对比例1Comparative example 1
一种混凝土材料的制备方法，包括如下步骤：A method for preparing concrete materials, including the following steps:
(1)将10目橡胶颗粒加入到20wt％NaOH溶液中浸泡24h，清洗、晾干，得到改性橡胶；玄武岩纤维加入到60wt％淀粉磷酸钠溶液中浸渍24h，晾干得到改性纤维；将10g改性橡胶、20g改性纤维加入到50g EVA乳液中，然后加入10g PAM，搅拌、超声振动20min，得改性到橡胶-纤维分散液；(1) Add 10 mesh rubber particles to 20wt% NaOH solution and soak for 24 hours, clean and dry to obtain modified rubber; add basalt fiber to 60wt% starch sodium phosphate solution and soak for 24 hours, dry to obtain modified fiber; Add 10g modified rubber and 20g modified fiber to 50g EVA emulsion, then add 10g PAM, stir and ultrasonically vibrate for 20 minutes to obtain a modified rubber-fiber dispersion;
(2)按重量份将1133g粗骨料、549g细骨料、45g改性橡胶-纤维分散液、447gPO42.5普通硅酸盐水泥、40g粉煤灰、210g水依次加入到搅拌机中，干拌5min，得到浆料；(2) Add 1133g coarse aggregate, 549g fine aggregate, 45g modified rubber-fiber dispersion, 447g PO42.5 ordinary Portland cement, 40g fly ash, and 210g water into the mixer in sequence by weight, and dry mix 5min, get slurry;
(3)将4g减水剂、0.5g引气剂加入到浆料中，搅拌5min，得到混凝土材料。(3) Add 4g of water-reducing agent and 0.5g of air-entraining agent to the slurry and stir for 5 minutes to obtain concrete material.
对比例2Comparative example 2
一种混凝土材料的制备方法，包括如下步骤：A method for preparing concrete materials, including the following steps:
(1)向将20g环氧树脂E51加入到100g PO42.5普通硅酸盐水泥中，搅拌均匀得到改性水泥；(1) Add 20g epoxy resin E51 to 100g PO42.5 ordinary Portland cement, stir evenly to obtain modified cement;
(2)按重量份将1133g粗骨料、549g细骨料、15g 10目橡胶颗粒、30g玄武岩纤维、447g改性水泥、40g粉煤灰、210g水依次加入到搅拌机中，干拌5min，得到浆料；(2) Add 1133g coarse aggregate, 549g fine aggregate, 15g 10-mesh rubber particles, 30g basalt fiber, 447g modified cement, 40g fly ash, and 210g water to the mixer in sequence by weight, and dry mix for 5 minutes to obtain slurry;
(3)将4g减水剂、0.5g引气剂加入到浆料中，搅拌5min，得到混凝土材料。(3) Add 4g of water-reducing agent and 0.5g of air-entraining agent to the slurry and stir for 5 minutes to obtain concrete material.
对实施例1～3、对比例1～2制备所得混凝土材料分别进行性能测试，参考GB/T50081-2019《普通混凝土物理力学性能试验方法标准》测定混凝土28d抗压强度、28d抗折强度、劈裂抗拉强度，参考GB/T50082-2019《普通混凝土长期性能和耐久性能试验方法标准》测定混凝土弹性模量，参考CECS13-2009《纤维混凝土试验方法标准》测定混凝土峰值荷载挠度、韧度、等效初始弯曲强度。Conduct performance tests on the concrete materials prepared in Examples 1 to 3 and Comparative Examples 1 to 2. Refer to GB/T50081-2019 "Standard for Test Methods of Physical and Mechanical Properties of Ordinary Concrete" to determine the 28d compressive strength, 28d flexural strength, and split strength of concrete. For crack tensile strength, refer to GB/T50082-2019 "Standard for Test Methods for Long-term Performance and Durability Performance of Ordinary Concrete" to measure the elastic modulus of concrete, and refer to CECS13-2009 "Standard for Test Methods for Fiber Concrete" to measure peak load deflection, toughness, etc. Effective initial bending strength.
表1混凝土性能测试数据Table 1 Concrete performance test data
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed in the present invention, implement the technical solutions of the present invention. Equivalent substitutions or changes of the inventive concept thereof shall be included in the protection scope of the present invention.
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| CN202310656864.8ACN116854424B (en) | 2023-06-05 | 2023-06-05 | A flexible concrete material suitable for assembled pavement and its preparation method and application |
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| CN202310656864.8ACN116854424B (en) | 2023-06-05 | 2023-06-05 | A flexible concrete material suitable for assembled pavement and its preparation method and application |
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| CN113955990A (en)* | 2021-10-25 | 2022-01-21 | 杭州瑞鼎建材有限公司 | Semi-flexible concrete and preparation method thereof |
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