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    饶朝崧

 

         （云南建投第六建设有限公司 ，昆明 650000)

摘   要 ：为了提高建筑施工中混凝土结构的防水性能 ， 以粉煤灰和电石渣为原料 ，通过碳化反应制备出碳  化粉煤灰 ，然后将其与水泥 、聚合物乳液以及其他助剂相结合 ，制备出了一种适合建筑施工用的新型粉煤灰基  防水涂料。通过室内试验考察了碳化粉煤灰加量对防水涂料性能的影响 ，并评价了对泡沫混凝土性能的影响。 结果表明： 当碳化粉煤灰的质量分数为 30% 时 ，具有良好的疏水性能 、拉伸性能和耐老化性能 ，表面接触角可  以达到 150 °以上 ，拉伸强度为 3 . 61  MPa ,  断裂延伸率为 340. 85% ,  热老化 28 d 后的拉伸强度仍能达到 3. 51  MPa。 与空白泡沫混凝土试样相比 ，混凝土试样吸水性能和导热性能显著下降 ，抗冻性能显著提升 ，具有良好的防水  特性和保温效果 ，适合在混凝土结构防水施工中进行使用。

关键词：建筑施工 ；碳化粉煤灰 ；防水涂料 ；疏水性能 ；泡沫混凝土 ；保温性能

中图分类号：TQ630 ;  TU56            文献标志码：A    

         

文章编号： 1005- 8249  (2025)  03- 0063- 05

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .03 .012

RAO Chaosong

(Yunnan Construction Investment Sixth Construction Co., Ltd., Kunming, 650000, China）

Abstract：In order to improve the waterproof performance of concrete structure in building construction, carbonized fly ash was prepared by carbonization reaction with fly ash and carbide slag as raw materials, and then a new type of fly ash based waterproof coating suitable for building construction was prepared by combining it with cement, polymer lotion and other additives. The influence of the amount of carbonized fly ash on the performance of waterproof coating was investigated through laboratory tests, and the influence of the amount of carbonized fly ash on the performance of foam concrete was evaluated. The results show that when the mass fraction of carbonized fly ash is 30%, it has good hydrophobicity, tensile properties, and aging resistance. The surface contact angle can reach over 150 °, the tensile strength is 3.61 MPa, the elongation at break is 340.85%, and the tensile strength after 28 days of thermal aging can still reach 3.51 MPa. Compared with the blank foam concrete sample, the water absorption and thermal conductivity of the concrete sample are significantly reduced, the frost resistance is significantly improved, and the concrete sample has good waterproof properties and thermal insulation effect, which is suitable for use in the waterproof construction of concrete structures.

Keywords: construction of buildings; carbonized fly ash; waterproof coating; hydrophobic performance; foam concrete; thermal insulation performance

作者简介： 饶朝崧  (1987—) ,   男 ，本科 ， 高级工程师 ，研 究方向：建筑工程施工。

收稿日期：2024 - 12 - 23