麦秸纤维与牡蛎壳对泡沫混凝土力学性能的影响

Effect of wheat straw fiber and oyster shell on mechanical properties of foam concrete

摘要

为开发一种新型绿色低碳、碱性弱的混凝土人工鱼礁材料, 本研究在泡沫混凝土基础上掺入农业废弃物麦秸纤维和牡蛎壳, 通过混凝土性能测试以及扫描电镜研究了两种材料对人工鱼礁用泡沫混凝土抗压强度和劈裂抗拉强度的影响, 二者掺量占胶凝材料总质量百分比分别为 0.05%~0.25% 和 5%~25%。并以发泡剂稀释倍数、麦秸纤维掺量、牡蛎壳掺量作为影响因素, 建立了抗压强度和劈裂抗拉强度二次多项式回归模型。结果表明: 随麦秸纤维掺量的增加, 泡沫混凝土力学性能先增强后减弱, 最优掺量为 0.15%; 随牡蛎壳掺量的增加, 泡沫混凝土力学性能先增强后减弱, 最优掺量为 15%; 适量复掺麦秸纤维和牡蛎壳细骨料可以改善泡沫混凝土的力学性能, 当牡蛎壳掺量 15%、麦秸纤维掺量 0.2% 时泡沫混凝土力学性能最优且比单掺任一种材料效果更好。根据回归模型的优化结果得到 3 个影响因素的最优值: 发泡剂稀释倍数 38.60、麦秸纤维掺量 0.15%、牡蛎壳掺量 14.76%。

Abstract

To develop a novel green, low-carbon and weak-alkaline concrete artificial reef material, this study added wheat straw fiber and oyster shell into the foam concrete and investigated the effects of the two materials on the compressive strength and splitting tensile strength of the foam concrete for artificial reef through concrete performance testing and electron microscope scanning. The percentages of the two materials in the total mass of the cementitious material were 0.05%~0.25% and 5%~25%, respectively. A quadratic polynomial regression model of compressive strength and splitting tensile strength was established with the dilution ratio of foaming agent, the content of wheat straw fiber and the content of oyster shell as the influencing factors. The results show that with the increase of wheat straw fiber content, the mechanical properties of the foam concrete first increase and then decrease and the optimal content is 0.15%, while with the increase of oyster shell content, the mechanical properties of foam concrete first increase and then decrease and the optimal content was 15%. Appropriate amount of wheat straw fiber and oyster shell fine aggregate can improve the mechanical properties of foam concrete. When the oyster shell content is 15% and the wheat straw fiber content is 0.2%, the mechanical properties of the foam concrete are the best and the effect is better than that of a single material. The optimization results of the regression model yielded the optimal values of the three influencing factors as follows: the dilution ratio of foaming agent of 38.60 times, the content of wheat straw fiber of 0.15%, and the content of oyster shell of 14.76%.

关键词

泡沫混凝土 / 麦秸纤维 / 牡蛎壳 / 抗压强度 / 劈裂抗拉强度

Key words

foam concrete / wheat straw fiber / oyster shell / compressive strength / splitting tensile strength

参考文献

[1] 于定勇, 陈雅林, 李忠勤, 等 . 增设倾斜侧板的新型人工鱼礁体流场效应研究[J]. 中国海洋大学学报 (自然科学版), 2025, 55(增1): 55-68.

[2] YU Dingyong , CHEN Yalin , LI Zhongqin , et al. Study on flow field effect of square artificial reef with inclined side plates[J]. Periodical of Ocean University of China, 2025, 55(S1): 55-68.

[3] 张年华, 田涛, 沈璐, 等 . 人工鱼礁建礁材料研究应用进展[J]. 大连海洋大学学报, 2022, 37(2): 352-362.

[4] ZHANG Nianhua , TIAN Tao , SHEN Lu , et al. Research and application progress of artificial reef construction materials: A review[J]. Journal of Dalian Ocean University, 2022, 37(2): 352-362.

[5] VIVIER B , DAUVIN J C , NAVON M , et al. Marine artificial reefs, a meta—analysis of their design, objectives and effectiveness[J/OL]. Global Ecology and Conservation, 2021, 27.DOI: 10.1016/j.gecco.2021.e01538.

[6] 张培恒, 王正旺, 赵静, 等 . 再生粗骨料复合聚丙烯纤维泡沫混凝土配合比设计与力学性能研究[J]. 混凝土, 2025(4): 257-262.

[7] ZHANG Peiheng , WANG Zhengwang , ZHAO Jing , et al. Research on the mix design and mechanical properties of recycled coarse aggregate composite PP fiber lightweight concrete[J]. Concrete, 2025(4): 257-262.

[8] 薛苗苗, 刘巧会, 刘周强, 等 . 椰子纤维泡沫混凝土静动态力学性能研究[J]. 混凝土, 2024(12): 57-64.

[9] XUE Miaomiao , LIU Qiaohui , LIU Zhouqiang , et al. Study on static and dynamic mechanical properties of coconut fiber foamed concrete[J]. Concrete, 2024(12): 57-64.

[10] 陈柯, 孙思齐, 方强, 等 . 玻璃纤维织物增强地聚合物砂浆弯曲力学性能试验研究[J]. 山东科技大学学报 (自然科学版), 2025, 44(3): 87-96.

[11] CHEN Ke , SUN Siqi , FANG Qiang , et al. Experimental investigation on flexural mechanical properties of glass fiber textile reinforced geopolymer mortar[J]. Journal of Shandong University of Science and Technology (Natural Science), 2025, 44(3): 87-96.

[12] 王秀丽, 潘旭宾, 吴征 . 稻草纤维增强泡沫混凝土物理力学性能试验研究[J]. 土木与环境工程学报 (中英文), 2024, 46(3): 189-197.

[13] WANG Xiuli , PAN Xubin , WU Zheng . Experimental study on the physical and mechanical properties of straw fiber reinforced foam concrete[J]. Journal of Civil and Environmental Engineering, 2024, 46(3): 189-197.

[14] 李超飞, 苏有文, 陈国平, 等 . 稻草纤维混凝土性能研究[J]. 混凝土, 2013(10): 30-32.

[15] LI Chaofei , SU Youwen , CHEN Guoping , et al. Study on properties of straw fiber reinforced concrete[J]. Concrete, 2013(10): 30-32.

[16] KOEHNKEN L , RINTOUL M S , GOICHOT M , et al. Impacts of riverine sand mining on freshwater ecosystems: A review of the scientific evidence and guidance for future research[J]. River Research and Applications, 2020, 36(3): 362-370.

[17] KUO W T , WANG H Y , SHU C Y , et al. Engineering properties of controlled low—strength materials containing waste oyster shells[J]. Construction and Building Materials, 2013, 46(9): 128-133.

[18] WANG H Y , KUO W T , LIN C C , et al. Study of the material properties of fly ash added to oyster cement mortar[J]. Construction and Building Materials, 2013, 41(4): 532-537.

[19] KONG J F , CONG G W , NI S Y , et al. Recycling of waste oyster shell and recycled aggregate in the porous ecological concrete used for artificial reefs[J/OL]. Construction and Building Materials, 2022, 323.DOI: 10.1016/j.conbuildmat.2022.126447.

[20] OYEBISI S , ALOMAYRI T . Revolutionizing eco—friendly concrete: Unleashing pulverized oyster shell and corncob ash as cement alternatives for sustainable building[J/OL]. Construction and Building Materials, 2025, 484.DOI: 10.1016/j.conbuildmat.2025.141776.

[21] MENG Y T, DA B, YU X T, et al. Study on mechanical properties and durability of geopolymer concrete with oyster shell aggregate[J/OL]. Construction and Building Materials, 2025, 472.DOI: 10.1016/j.conbuildmat.2025.140926.

[22] 严亮, 赵玉青, 杨久俊, 等 . 麦秸纤维对水泥浆体性能的影响[J]. 混凝土, 2012(2): 60-62.

[23] YAN Liang , ZHAO Yuqing , YANG Jiujun , et al. Effect of wheat straw fibre on performance of cement paste[J]. Concrete, 2012(2): 60-62.

[24] 国家质量监督检验检疫总局 . 泡沫混凝土及制品试验方法: GB/T 43487—2023[S]. 北京: 中国标准出版社, 2023.

[25] 国家质量监督检验检疫总局 . 水泥砂浆和混凝土干燥收缩开裂性能试验方法: GB/T 29417—2012[S]. 北京: 中国标准出版社, 2012.

[26] 王慧斌, 崔通, 陈捷, 等 . 基于响应面法的机制砂路面混凝土配合比优化及其性能研究[J]. 硅酸盐通报, 2024, 43(5): 1878-1888.

[27] WANG Huibin , CUI Tong , CHEN Jie , et al. Mix proportion optimization and performance study of manufactured sand road concrete based on response surface methodology[J]. Bulletin of the Chinese Ceramic Society, 2024, 43(5): 1878-1888.

基金资助

国家重点研发计划项目(2022YFB2603000)