高缓凝增塑剂在三峡工程碾压混凝土中的应用

SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete Pub Date : 1997-09-01 DOI:10.14359/6215

Liang Wenquan, L. Huizhen, H. Zhen, Li Yajie

{"title":"高缓凝增塑剂在三峡工程碾压混凝土中的应用","authors":"Liang Wenquan, L. Huizhen, H. Zhen, Li Yajie","doi":"10.14359/6215","DOIUrl":null,"url":null,"abstract":"Polybasic organic phosphate and lignosulphonate were combined in appropriate proportions to be a kind of high-range retarder-plasticizer (KM) for use in higher temperatures. Various retarders have been used in ordinary concrete and roller-compacted concrete (RCC) for testing under 45(C) degrees and 25% relative humidity. Rheology and time of setting for fresh concrete and mechanical properties of hardened concrete, allowance of exposure time of bond between two construction layers of RCC, etc. were investigated. Simulated testing for Three Gorges Project was also carried out by testing at the Development General Co. and the Testing Center of Gezhouba group.","PeriodicalId":21898,"journal":{"name":"SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Use of High-Range Retarder-Plasticizer for Roller-Compacted Concrete of the Three Gorges Project in China\",\"authors\":\"Liang Wenquan, L. Huizhen, H. Zhen, Li Yajie\",\"doi\":\"10.14359/6215\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polybasic organic phosphate and lignosulphonate were combined in appropriate proportions to be a kind of high-range retarder-plasticizer (KM) for use in higher temperatures. Various retarders have been used in ordinary concrete and roller-compacted concrete (RCC) for testing under 45(C) degrees and 25% relative humidity. Rheology and time of setting for fresh concrete and mechanical properties of hardened concrete, allowance of exposure time of bond between two construction layers of RCC, etc. were investigated. Simulated testing for Three Gorges Project was also carried out by testing at the Development General Co. and the Testing Center of Gezhouba group.\",\"PeriodicalId\":21898,\"journal\":{\"name\":\"SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.14359/6215\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14359/6215","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

摘要

以多碱型有机磷和木质素磺酸盐为原料，按适当比例配制成一种适用于高温环境的高程缓速增塑剂。各种缓凝剂已用于普通混凝土和碾压混凝土(RCC)在45(C)度和25%相对湿度下的测试。研究了新拌混凝土的流变学、凝结时间、硬化混凝土的力学性能、碾压混凝土两层粘结暴露时间等。在开发总公司和葛洲坝集团测试中心进行了三峡工程模拟试验。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Use of High-Range Retarder-Plasticizer for Roller-Compacted Concrete of the Three Gorges Project in China

Polybasic organic phosphate and lignosulphonate were combined in appropriate proportions to be a kind of high-range retarder-plasticizer (KM) for use in higher temperatures. Various retarders have been used in ordinary concrete and roller-compacted concrete (RCC) for testing under 45(C) degrees and 25% relative humidity. Rheology and time of setting for fresh concrete and mechanical properties of hardened concrete, allowance of exposure time of bond between two construction layers of RCC, etc. were investigated. Simulated testing for Three Gorges Project was also carried out by testing at the Development General Co. and the Testing Center of Gezhouba group.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

SP-173: Fifth CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete

自引率

0.00%

发文量