摘要
目的研究复掺减水剂、矿渣和防水剂对粉煤灰加气混凝土吸水性能和抗压强度的影响,解决其吸水率高,抗压强度偏低的问题.方法通过复掺减水剂、矿渣和防水剂的手段,制备B05粉煤灰加气混凝土试件,测试加气混凝土试块的抗压强度和质量吸水率.结果减水剂掺量为0.60%时质量吸水率下降到63%,抗压强度3.26 MPa;复掺减水剂0.60%和矿渣掺量10%时抗压强度提高到4.03 MPa;3种防水剂中有机硅烷类的防水效果最好,质量吸水率下降到57%,3种防水剂的掺入均会导致抗压强度下降.结论复掺减水剂和矿渣粉选择合适的掺量,有助于提高抗压强度,降低吸水率;复掺减水剂、矿渣和防水剂,有机硅烷类的防水效果比较显著,高级脂肪酸类砂浆防水剂和硬脂酸钙乳液的防水效果一般.
Water absorption and compressive strength of fly ash aerated concrete by mixing slag powder, and water reducing agent, slag and waterproofing agent to solve its high-water absorption and low compressive strength. The sample of fly ash aerated concrete was prepared, and its com- pressive strength and water absorption were measured. Results show when the dosage of water reducing agent was 0.60%, the water absorption rate of aerated concrete dropped to 63% and the compressive strength was 3.26 MPa; Compressive strength increased to 4.03 MPa when the dosage of water reducing agent and slag were 0.6% and 10% ,respectively. The polysiloxane water repellents has the best waterproof effect among the three water repellents which water absorption rate decreased to 57 %, the three water repellents all lead to the decrease of the compressive strength.To choose the appropriate dosage of slag, help to improve the compressive strength and reduce water absorption;About water repellents, the polysiloxane water repellents effect is significant;Higher fatty acid and Calcium stearate are not so effective.
作者
张巨松
杨秋雨
董建国
ZHANG Jusong YANG Qiuyu DONG Jianguo(Materials Science and Engineering, Shenyang Jianzhu University, Shenyang, China, 110168 Liaoning Qin Zhen Environmental Protection Building Materials Co. Ltd, Liaoyang, China, 110000)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第3期483-489,共7页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(50274025)
辽宁省教育厅科技攻关项目(11211004)
