广东土木与建筑GUANGDONGARCHITECTURECIVILENGINEERING2023年3月第30卷第3期MAR2023Vol.30No.3DOI:10.19731/j.gdtmyjz.2023.03.026作者简介：张兴（1980-），男，大学本科，工程师，主要从事工程质量管理、试验检测等工作。E-mail：zxing2@cccc4.com纯机制砂混凝土配合比的设计及优化张兴，苏志焕（中交四航局第二工程有限公司广州510230）摘要：近年来我国基建工程发展突飞猛进，河砂资源越来越紧缺，机制砂代替河砂已成为了目前最佳替代方案。机制砂在配合比设计及施工性能上与传统河砂有所差别。通过分析机制砂的技术参数，基于沉箱施工工艺要求进行纯机制砂配合比设计，通过对原材料的质量控制，配合比用水量、骨料比例、砂率、外加剂复配等技术措施，从而设计出纯机制砂的配合比，并在使用过程中不断优化总结，优化后的混凝土工作性能、强度、耐久性等指标均满足要求。关键词：机制砂；配合比；试拌；调整优化中图分类号：TV332.9文献标志码：A文章编号：1671-4563（2023）03-112-04DesignandOptimizationofMixProportionofPureMachine-madeSandConcreteDesignandOptimizationofMixProportionofPureMachine-madeSandConcreteZHANGXing，SUZhihuan（TheSecondEngineeringCompanyofCCCCFourthHaborEngineeringCo.，Ltd.Guangzhou510230，China）AbstractAbstract：Inrecentyears，withtherapiddevelopmentofinfrastructureprojectsinChina，riversandresourcesarebecomingincreasinglyscarce.Machinemadesandhasbecomethebestalternativetoriversand.Machinemadesandisdifferentfromtraditionalriversandinmixdesignandconstructionperformance.Throughtheanalysisoftechnicalparametersofmachine-madesand，themixproportionofpurema‐chine-madesandisdesignedbasedontherequirementsofcaissonconstructiontechnology.Throughthequalitycontrolofrawmaterials，thetechnicalmeasuressuchasmixproportionwaterconsumption，aggregateproportion，sandratio，admixturecompounding，etc.，themixpro‐portionofpuremachine-madesandisdesigned.Itisconstantlyoptimizedandsummarizedintheuseprocess，andtheoptimizedconcreteperformance，strength，durabilityandotherindicatorsmeettherequirements.KeywordsKeywords：machine-madesand；mixproportion；trialmixing，adjustmentandoptimization0前言国家对环保的要求越来越严格，河砂作为短...
