低胶材船闸工程混凝土性能评价试验研究  

Experimental study on the performance evaluation of low binder lock engineering concrete

作　　者：蔡明[1,2,3] 刘兴荣 杜志芹[1,2,3] 温金保 

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]南京瑞迪高新技术有限公司,江苏南京211161 [3]江苏省(瑞迪)水工新材料工程技术研究中心,江苏南京210024

出　　处：《混凝土》2017年第12期157-159,共3页Concrete

基　　金：水利部科技推广计划项目(TG1424)

摘　　要：船闸工程是我国交通运输工程中的重要领域,低胶材船闸大体积混凝土易出现和易性差、泌水、裂缝等问题。聚羧酸减水剂具有减水率高、收缩率低、绿色环保等特性,本文将其掺入船闸工程混凝土中进行性能评价试验,研究结果表明,新拌混凝土的和易性得到显著改善,而且解决了底板大体积混凝土易开裂、闸室墙混凝土易泌水等技术问题,提高工程耐久性。Lock engineering is an important field of traffic and transportation engineering in our country.There are many problems in mass concrete of ship lock, such as poor workability, bleeding, and cracks.Polycarboxylate superplasticizer has high water reducing rate, low shrinkage rate, greens environmental protection ere.The polycarboxylate superplasticizer was mixed into lock engineering concrete to study the performance evaluation experiment.The research results show that,the workability of fresh concrete has been effectively improved, but also the problems of cracks in bottom plate large volume concrete and bleeding in lock chamber wall has been solved, and the durability has been improved.

关 键 词：船闸工程 聚羧酸系减水剂 泌水 裂缝 耐久性 

分 类 号：TU528.01[建筑科学—建筑技术科学]