一种生态土壤固化剂及其制备方法Ecological soil solidification agent and preparation method thereof
技术领域Technical field
本发明涉及建筑材料领域,特别涉及一种生态土壤固化剂及其制备方法。The invention relates to the field of building materials, in particular to an ecological soil solidification agent and a preparation method thereof.
背景技术Background technique
为解决环境污染、降低污染排放率、提高资源生产率成为当今社会的焦点,建筑垃圾、尾端渣土、淤泥是最难处理的,将建筑废弃物加以利用制备成砖头等产品,但随着经济不断发展,工程建设基础越加复杂,由于建筑废弃物在施工中遇到土体加固问题越来越多也越来越复杂,传统土壤固化剂需要高温高压等复杂工艺进行,导致产品产品使用固废比例为30%左右,加固易于出现干缩裂缝等问题,已经不能满足复杂工程的建设要求。In order to solve environmental pollution, reduce pollution discharge rate, and improve resource productivity has become the focus of today’s society, construction waste, tail end slag, and silt are the most difficult to deal with. Construction waste is used to make bricks and other products, but with economic With continuous development, the foundation of engineering construction has become more and more complex. As construction waste encounters more and more soil reinforcement problems during construction, it is becoming more and more complicated. Traditional soil curing agents require complex processes such as high temperature and high pressure, which leads to the use of solid products. The waste ratio is about 30%, and the reinforcement is prone to shrinkage cracks and other problems, which can no longer meet the construction requirements of complex projects.
发明内容Summary of the invention
鉴于此,本发明提出一种生态土壤固化剂及其制备方法,解决上述问题。In view of this, the present invention proposes an ecological soil solidification agent and a preparation method thereof to solve the above-mentioned problems.
本发明的技术方案是这样实现的:一种生态土壤固化剂,包括以下重量份原料:磺化琥珀酸二辛酯钠盐0.01-0.06份、木质素纤维0.7-3份、盐30-60份、羟丙基甲基纤维素20-50份、氢氧化物3-18份、聚乙烯醇1-13份、2-乙基己醇0.075-0.3份、异丙醇0.5-1.2份、水500-900份,The technical scheme of the present invention is realized as follows: an ecological soil solidification agent, comprising the following parts by weight of raw materials: 0.01-0.06 parts of dioctyl sulfosuccinate sodium salt, 0.7-3 parts of lignin fiber, and 30-60 parts of salt , Hydroxypropyl methylcellulose 20-50 parts, hydroxide 3-18 parts, polyvinyl alcohol 1-13 parts, 2-ethylhexanol 0.075-0.3 parts, isopropanol 0.5-1.2 parts, water 500 -900 copies,
进一步的,一种生态土壤固化剂,包括以下重量份原料:磺化琥珀酸二辛酯钠盐0.02份、木质素纤维1.3份、盐45份、羟丙基甲基纤维素30份、氢氧化钠11份、聚乙烯醇7份、2-乙基己醇0.19份、异丙醇0.8份、水800份。Further, an ecological soil curing agent includes the following raw materials by weight: 0.02 parts of dioctyl sulfosuccinate sodium salt, 1.3 parts of lignin fiber, 45 parts of salt, 30 parts of hydroxypropyl methylcellulose, and hydroxide 11 parts of sodium, 7 parts of polyvinyl alcohol, 0.19 parts of 2-ethylhexanol, 0.8 parts of isopropanol, and 800 parts of water.
本发明还提供一种生态土壤固化剂的制备方法,包括以下步骤:将盐、羟丙基甲基纤维素、聚乙烯醇、氢氧化钠在常温下混合搅拌,调节pH为5~7,搅拌速率为60~600r/min,搅拌时间60~200min,静置2~8h后,加入木质素纤维、磺化琥珀酸二辛酯钠盐、2-乙基己醇、异丙醇、纯净水进行搅拌,控制搅拌速率为速率为60~800r/min,搅拌时间30~50min,得生态土壤固化剂。The present invention also provides a preparation method of an ecological soil solidification agent, which includes the following steps: mixing and stirring salt, hydroxypropyl methylcellulose, polyvinyl alcohol, and sodium hydroxide at room temperature, adjusting the pH to 5-7, and stirring The speed is 60~600r/min, the stirring time is 60~200min, and after standing for 2~8h, add lignin fiber, dioctyl sulfosuccinate sodium salt, 2-ethylhexanol, isopropanol, and purified water. Stir, control the stirring rate at a rate of 60-800r/min and a stirring time of 30-50min to obtain an ecological soil solidification agent.
与现有技术相比,本发明的有益效果是:本发明提供的生态土壤固化剂配方合理,科学配比,改变土壤的组织架构,使得淤泥土壤颗粒间的吸附增强,起到固化和硬化土壤的效果,各个组分相互协同发挥作用,能够处理土壤中的吸附水和改变其水分子之间的亲水性和疏水性,土壤固化剂与土壤混合后通过一系列物理化学反应来改变土壤的工程性质,能将土壤中大量的自由水以结晶水的形式固定下来,使得土壤胶团表面电流降低,胶团所吸附的双电层减薄,电解质浓度增强,颗粒趋于凝聚,体积膨胀而进一步填充土壤孔隙,在压实功的作用下,使固化土易于压实和稳定,从而形成整体结构,使制备的砖块压密度高;且本发明制备的土壤固化剂只需要简单的混合搅拌,工序步骤简单,易于操作,控制搅拌速率和时间可得到固废比高的固化剂,用于制备建筑用砖抗压强度强、吸水率低、质量损失率低,固化效果显著。Compared with the prior art, the beneficial effects of the present invention are: the ecological soil solidifying agent provided by the present invention has a reasonable formula, a scientific proportioning, and changes the soil tissue structure, so that the adsorption between the silt soil particles is enhanced, and the soil can be solidified and hardened. The effect of each component is to work together to treat the adsorbed water in the soil and change the hydrophilicity and hydrophobicity between the water molecules. After the soil solidification agent is mixed with the soil, a series of physical and chemical reactions change the soil Engineering properties, it can fix a large amount of free water in the soil in the form of crystal water, so that the surface current of the soil micelles is reduced, the electric double layer adsorbed by the micelles is thinned, the electrolyte concentration is enhanced, the particles tend to agglomerate, and the volume expands. The soil pores are further filled, and the solidified soil is easily compacted and stabilized under the action of compaction work, thereby forming an integral structure, making the prepared bricks have a high compaction density; and the soil solidifying agent prepared by the present invention only needs simple mixing and stirring , The process steps are simple, easy to operate, control the stirring rate and time to obtain a curing agent with a high solid-to-waste ratio, which is used to prepare building bricks with strong compressive strength, low water absorption, low quality loss, and significant curing effect.
具体实施方式detailed description
为了更好理解本发明技术内容,下面提供具体实施例,对本发明做进一步的说明。In order to better understand the technical content of the present invention, specific embodiments are provided below to further illustrate the present invention.
本发明实施例所用的实验方法如无特殊说明,均为常规方法。The experimental methods used in the embodiments of the present invention are conventional methods unless otherwise specified.
本发明实施例所用的材料、试剂等,如无特殊说明,均可从商业途径得到。The materials, reagents, etc. used in the embodiments of the present invention can be obtained from commercial sources unless otherwise specified.
实施例1Example 1
一种生态土壤固化剂,包括以下重量份原料:磺化琥珀酸二辛酯钠盐0.01份、木质素纤维0.7份、盐30份、羟丙基甲基纤维素20份、氢氧化钠3份、聚乙烯醇1份、2-乙基己醇0.075份、异丙醇0.5份、纯净水500份。An ecological soil curing agent, comprising the following parts by weight of raw materials: 0.01 parts of dioctyl sulfosuccinate sodium salt, 0.7 parts of lignin fiber, 30 parts of salt, 20 parts of hydroxypropyl methylcellulose, and 3 parts of sodium hydroxide , 1 part of polyvinyl alcohol, 0.075 parts of 2-ethylhexanol, 0.5 parts of isopropanol, 500 parts of purified water.
实施例2Example 2
一种生态土壤固化剂,包括以下重量份原料:磺化琥珀酸二辛酯钠盐0.06份、木质素纤维3份、盐60份、羟丙基甲基纤维素50份、氢氧化钠18份、聚乙烯醇13份、2-乙基己醇0.3份、异丙醇1.2份、纯净水900份。An ecological soil curing agent, comprising the following raw materials in parts by weight: 0.06 parts of dioctyl sulfosuccinate sodium salt, 3 parts of lignin fiber, 60 parts of salt, 50 parts of hydroxypropyl methylcellulose, and 18 parts of sodium hydroxide , 13 parts of polyvinyl alcohol, 0.3 parts of 2-ethylhexanol, 1.2 parts of isopropanol, 900 parts of purified water.
实施例3Example 3
一种生态土壤固化剂,包括以下重量份原料:磺化琥珀酸二辛酯钠盐0.02份、木质素纤维1.3份、盐45份、羟丙基甲基纤维素30份、氢氧化钠11份、聚乙烯醇7份、2-乙基己醇0.19份、异丙醇0.8份、纯净水800份;An ecological soil curing agent, comprising the following parts by weight of raw materials: 0.02 parts of dioctyl sulfosuccinate sodium salt, 1.3 parts of lignin fiber, 45 parts of salt, 30 parts of hydroxypropyl methylcellulose, and 11 parts of sodium hydroxide , 7 parts of polyvinyl alcohol, 0.19 parts of 2-ethylhexanol, 0.8 parts of isopropanol, 800 parts of purified water;
上述实施例1~3的重量份原料在常温下混合搅拌,得生态土壤固化剂。The parts by weight of the raw materials of the foregoing Examples 1 to 3 are mixed and stirred at room temperature to obtain an ecological soil curing agent.
实施例4Example 4
本实施例采用与实施例3相同重量份原料,所述土壤固化剂的制备方法包括以下步骤:This embodiment uses the same parts by weight of raw materials as in Example 3. The preparation method of the soil solidification agent includes the following steps:
将盐、羟丙基甲基纤维素、聚乙烯醇、氢氧化钠在常温下混合搅拌,调节pH为6,搅拌速率为500r/min,搅拌时间130min,静置5h后,加入木质素纤维、磺化琥珀酸二辛酯钠盐、2-乙基己醇、异丙醇、纯净水进行搅拌,控制搅拌速率为速率为600r/min,搅拌时间40min,得生态土壤固化剂。Mix the salt, hydroxypropyl methylcellulose, polyvinyl alcohol, and sodium hydroxide at room temperature and stir, adjust the pH to 6, the stirring rate is 500r/min, the stirring time is 130min, and after standing for 5h, add the lignin fiber, The dioctyl sulfosuccinate sodium salt, 2-ethylhexanol, isopropanol, and purified water are stirred, and the stirring rate is controlled to be 600 r/min and the stirring time is 40 minutes to obtain an ecological soil curing agent.
实施例5Example 5
本实施例采用与实施例3相同重量份原料,所述土壤固化剂的制备方法包括以下步骤:This embodiment uses the same parts by weight of raw materials as in Example 3. The preparation method of the soil solidification agent includes the following steps:
将盐、羟丙基甲基纤维素、聚乙烯醇、氢氧化钠在常温下混合搅拌,调节pH为5,搅拌速率为300r/min,搅拌时间60min,静置2h后,加入木质素纤维、磺化琥珀酸二辛酯钠盐、2-乙基己醇、异丙醇、纯净水进行搅拌,控制搅拌速率为速率为500r/min,搅拌时间30min,得生态土壤固化剂。Mix salt, hydroxypropyl methylcellulose, polyvinyl alcohol, and sodium hydroxide at room temperature and stir, adjust pH to 5, stir at 300r/min, stir for 60min, and after standing for 2h, add lignin fiber, The dioctyl sulfosuccinate sodium salt, 2-ethylhexanol, isopropanol, and purified water are stirred, and the stirring rate is controlled to be 500 r/min and the stirring time is 30 minutes to obtain an ecological soil curing agent.
实施例6Example 6
本实施例采用与实施例3相同重量份原料,所述土壤固化剂的制备方法包括以下步骤:This embodiment uses the same parts by weight of raw materials as in Example 3. The preparation method of the soil solidification agent includes the following steps:
将盐、羟丙基甲基纤维素、聚乙烯醇、氢氧化钠在常温下混合搅拌,调节pH为7,搅拌速率为600r/min,搅拌时间200min,静置8h后,加入木质素纤维、磺化琥珀酸二辛酯钠盐、2-乙基己醇、异丙醇、纯净水进行搅拌,控制搅拌速率为速率为800r/min,搅拌时间50min,得生态土壤固化剂。Mix salt, hydroxypropyl methylcellulose, polyvinyl alcohol, and sodium hydroxide at room temperature and stir, adjust the pH to 7, the stirring rate is 600r/min, the stirring time is 200min, and after standing for 8h, add the lignin fiber, The dioctyl sulfosuccinate sodium salt, 2-ethylhexanol, isopropanol, and purified water are stirred, and the stirring rate is controlled to be 800r/min and the stirring time is 50min to obtain the ecological soil curing agent.
对比例1Comparative example 1
本对比例与实施例3的区别在于,制备上述土壤固化剂包括以下重量份原料:磺化琥珀酸二辛酯钠盐0.09份、木质素纤维0.5份、盐20份、羟丙基甲基纤维素10份、氢氧化钠2份、聚乙烯醇0.8份、2-乙基己醇0.05份、异丙醇0.2份、纯净水400份。The difference between this comparative example and Example 3 is that the preparation of the soil solidification agent includes the following raw materials by weight: 0.09 parts of dioctyl sulfosuccinate sodium salt, 0.5 parts of lignin fiber, 20 parts of salt, and hydroxypropyl methyl fiber 10 parts of vegetarian, 2 parts of sodium hydroxide, 0.8 parts of polyvinyl alcohol, 0.05 parts of 2-ethylhexanol, 0.2 parts of isopropanol, 400 parts of purified water.
对比例2Comparative example 2
本对比例与实施例3的区别在于,制备上述土壤固化剂的重量份原料中不包括磺化琥珀酸二辛酯钠盐、2-乙基己醇。The difference between this comparative example and Example 3 is that the parts by weight of the raw materials for preparing the soil solidification agent do not include dioctyl sulfosuccinate sodium salt and 2-ethylhexanol.
对比例3Comparative example 3
本对比例与实施例3的区别在于,制备上述土壤固化剂的重量份原料中不包括羟丙基甲基纤维素、异丙醇。The difference between this comparative example and Example 3 is that the parts by weight of the raw materials for preparing the soil solidification agent do not include hydroxypropyl methyl cellulose and isopropanol.
一、性能测试1. Performance test
将上述实施例1~6和对比例1~3制得的建筑用砖进行性能测试,分析结果如下:The performance test of the building bricks prepared in the foregoing Examples 1 to 6 and Comparative Examples 1 to 3, the analysis results are as follows:
由上表可知,实施例1~3对比可知,实施例3科学配比,以最佳的比例制备出的固化剂应用于建筑用砖中获得效果较好;对比实施例3~6,制备固化剂的 操作手段对其配比起到一定的作用,控制搅拌速率、时间、pH制备出的固化剂抗压强度为22.6MPa、吸水率12.8%、碳化性能20.6MPa、软化系数0.92,质量损失率为0.2%;实施例3对比例1~3中,固化剂任一组分缺一不可,科学配比起到很大的作用,需要合理的设定比例,才能达到最佳的效果,应用于普通砖或者生态砖中,固化效果显著。It can be seen from the above table that the comparison of Examples 1 to 3 shows that the curing agent prepared in Example 3 is scientifically proportioned, and the curing agent prepared in the best ratio is used in building bricks to obtain better effects; Comparative Examples 3 to 6, Preparation and curing The operating method of the agent has a certain effect on its ratio. The compressive strength of the curing agent prepared by controlling the stirring rate, time and pH is 22.6MPa, water absorption 12.8%, carbonization performance 20.6MPa, softening coefficient 0.92, and mass loss rate In the comparative examples 1 to 3 of Example 3, any component of the curing agent is indispensable, and the scientific proportioning plays a great role. It is necessary to set a reasonable proportion to achieve the best effect. In ordinary bricks or ecological bricks, the curing effect is significant.
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.