疏水泡沫混凝土的制备与性能研究
Preparation and properties study of hydrophobic foamed concrete
关键词：
泡沫混凝土；吸水率；疏水剂；硬脂酸钙；耐久性能；泡沫稳定性
Key words：
Foamed concrete; Water absorption rate; Hydrophobic agent; Calcium stearate; Durability; Foam stability
刊期：
2025年第7期
DOI：
10.19761/j.1000-4637.2025.07.076.06
文章编号：
基金项目：
中国建筑工程（澳门）有限公司企业自立项目。
作者：
邓文聪1，王 棋1，李 飞1，梁德成1，郭继发1，李庭忠2，*，孙国星2
单位：
1.中国建筑工程（澳门）有限公司，澳门 999078；2.澳门大学 应用物理及材料工程研究院， 澳门 999078
摘要
摘 要：为了提高泡沫混凝土的防水性能和耐久性能，在泡沫混凝土中引入了不同形态、类别的疏水剂（硬脂酸锌粉末、水性硬脂酸锌乳液、硬脂酸钙粉末、十二烷基三甲基硅氧烷），研究了其对泡沫稳定性的影响。此外，对疏水剂进行了优选，并确定了其最佳掺量。结果表明：不同疏水剂对泡沫稳定性的影响不同，其中，硬脂酸钙的影响相对较小；随着硬脂酸钙掺量的增加及静置时间的延长，样品的消泡量和排液量增加，但可以通过适当提高发泡剂掺量来调整；随着硬脂酸钙掺量的增加，试件表面接触角呈先增大后减小的趋势，试件的吸水率先降低后增加，浸水后的抗压强度降低；当硬脂酸钙掺量为2.0%时，试件表面接触角最大，吸水率最低。
Abstract: In order to improve the waterproof performance and durability of foamed concrete, different forms and categories of hydrophobic agents(zinc stearate powder, water-based zinc stearate lotion, calcium stearate powder, dodecyl trimethylsiloxane) were introduced into the foamed concrete, and their effects on foam stability were investigated. In addition, the hydrophobic agent was optimized and its optimal dosage was determined. The results show that the effects of different hydrophobic agents on foam stability are different, among which, the effect of calcium stearate is relatively small. With the increase of calcium stearate dosage and the prolongation of settling time, the defoaming amount and discharge amount of the samples are increased, but it can be adjusted by appropriately increasing the dosage of foaming agent. With the increase of calcium stearate dosage, the contact angle of the surface of the specimen shows a tendency to increase firstly and then decrease, and the water absorption rate of the specimen is firstly reduced and then increased, and the compressive strength decreases after water immersion. When the dosage of calcium stearate is 2.0%, the surface contact angle of the specimen is the largest, and the water absorption rate is the lowest.
结论
（1）不同疏水剂对泡沫稳定性的影响不同，其中，硬脂酸钙的影响相对较小。随着硬脂酸钙掺量的增加及时间的延长，样品的消泡量和排液量增加，但可以通过适当提高发泡剂掺量来调整。
（2）随着硬脂酸钙掺量的增加，试件表面接触角呈先增大后减小的趋势，当硬脂酸钙掺量为2.0%时，试件表面接触角最大。随着硬脂酸钙掺量的增加，试件的吸水率先降低后增加，当硬脂酸钙掺量为2.0%时，试件的吸水率最低。随着硬脂酸钙掺量的增加，试件浸水后的抗压强度降低。
参考文献
[1] XIONG Y L,ZANG C,CHEN C,et al.Effect of superabsorbent polymer on the foam-stability of foamed concrete[J].Cement and Concrete Composites,2022,127:104398.
[2] RASTEGAR M M,BAGHERI A.Effect of foam volume on penetration parameters of foamed concrete[J].Magazine of Concrete Research,2022,74(19):989-998.
[3] HOU L,LI J,LU Z Y,et al.Influence of foaming agent on cement and foam concrete[J].Construction and Building Materials,2021,280:122399.
[4] GAO H Y,WANG W G,LIAO H Q,et al.Characterization of light foamed concrete containing fly ash and desulfurization gypsum for wall insulation prepared with vacuum foaming process[J].Construction and Building Materials,2021,281:122411.
[5] 徐文,钱冠龙,化子龙.用化学方法制备泡沫混凝土的试验研究[J].混凝土与水泥制品,2011(12):1-4.
[6] DU Z,ZUO W,WANG P,et al.Ultralight, super thermal insulation, and fire-resistant cellular cement fabricated with Janus nanoparticle stabilized ultra-stable aqueous foam[J].Cement and Concrete Research,2022,162:106994.
[7] CHO S S,KIM J M,HONG I P,et al.Electromagnetic shielding characteristics of eco-friendly foamed concrete wall[J].International Journal of Antennas and Propagation,2017,17:9794053.
[8] LI T,HUANG F,ZHU J,et al.Effect of foaming gas and cement type on the thermal conductivity of foamed concrete[J].Construction and Building Materials,2020,231:117197.
[9] WU K,SHAO Z S,QIN S.A solution for squeezing deformation control in tunnels using foamed concrete: A review[J].Construction and Building Materials,2020,257:119539.
[10] CHICA L,ALZATE A.Cellular concrete review: New trends for application in construction[J].Construction and Building Materials,2019,200:637-647.
[11] 刘超,罗健林,李秋义,等.泡沫混凝土的生产现状及未来发展趋势[J].现代化工,2018,38(9):10-14,16.
[12] GONG J Q,ZHANG W J.The effects of pozzolanic powder on foam concrete pore structure and frost resistance[J].Construction and Building Materials,2019,208:135-143.
[13] LV X,CAO W,YIO M,et al.High-performance lightweight foam concrete enabled by compositing ultra-stable hydrophobic aqueous foam[J].Cement and Concrete Composites,2024,152:105675.
[14] LIU C,WANG X,CHEN Y,et al.Influence of hydroxypropyl methylcellulose and silica fume on stability, rheological properties, and printability of 3D printing foam concrete[J].Cement and Concrete Composites,2021,122:104158.
[15] SUN C,ZHU Y,GUO J,et al.Effects of foaming agent type on the workability, drying shrinkage, frost resistance and pore distribution of foamed concrete[J].Construction and Building Materials,2018,186:833-839.
[16] HOU L,LI J,LU Z,et al.Effect of nanoparticles on foaming agent and the foamed concrete[J].Construction and Building Materials,2019,227:116698.
[17] CHEN Y.Experimental study on application performance of foamed concrete prepared based on a colloidal Nano SiO2-stabilized foam[J].Construction and Building Materials, 2023,409:134012.
[18] QIU Y,ZHANG L,CHEN Y,et al.Experimental study on application performance of foamed concrete prepared based on a new composite foaming agent[J].Advances in Materials Science and Engineering,2022(1):7217479.
[19] ZHANG C,FAN D,LU J,et al.Ultra-stable foam enabled by nano silica engineering for foam concrete improvement[J].Cement and Concrete Composites,2024,150:105575.
[20] PARK B,CHOI Y C.Investigation of carbon-capture property of foam concrete using stainless steel AOD slag[J].Journal of Cleaner Production,2021,288:125621.
[21] SONG N,LI Z,YI W,et al.Properties of foam concrete with hydrophobic starch nanoparticles as foam stabilizer[J].Journal of Building Engineering,2022,56:104811.
[22] XU Y,MAO J,JIANG J,et al.Research on the performance of foamed concrete based on superhydrophobic bulk modification[J].Construction and Building Materials,2024,438:137231.
[23] GAO J,GENG Y,LI S,et al.Effect of silane emulsion on waterproofing and anti-icing performance of foamed concrete[J].Construction and Building Materials,2021,301:124082.
[24] YOON H,LIM T,JEONG S,et al.Thermal transfer and moisture resistances of nano-aerogel-embedded foam concrete[J].Construction and Building Materials,2020,236:117575.
[25] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.泡沫混凝土用泡沫剂:JC/T 2199—2013[S].北京:建材工业出版社,2013.
[26] 中华人民共和国住房和城乡建设部.泡沫混凝土:JG/T 266—2011[S].北京:中国标准出版社,2011.
引用本文
邓文聪,王棋,李飞,等.疏水泡沫混凝土的制备与性能研究[J].混凝土与水泥制品,2025(7):76-81.
DENG W C,WANG Q,LI F,et al.Preparation and properties study of hydrophobic foamed concrete[J].China Concrete and Cement Products,2025(7):76-81.
下一个： 冷压成型匀质微孔复合保温材料的性能研究
相关文件