硬化混凝土

修正的Burgers模型及其对于硬化混凝土的应用

Modified Burgers model and Its Applicaton to hardened concrete

SO3则对硬化混凝土体积安定性影响较大；

SO_3 has a bigger effect on stability of volume of hardened concrete .

在与水同时掺加时，掺入水泥用量的0.7%的SAF就可显著改善新拌混凝土的和易性，提高硬化混凝土的力学性能和耐久性能；

It can remarkably improve the compatibility of the fresh concrete by addition 0.7 % at the same time , the mechanical property and the endurance also were improved .

修正的Burgers模型能更好地描述硬化混凝土的徐变行为。采用修正的Burgers模型推导的徐变公式计算值与试验结果比较吻合。

The result shows modified Burgers model is advantageous to describe the creep behavior of hardened concrete and the creep test results are in good agreement with the theoretical predictions of creep equations derived from modified Burgers model .

为此，本文研究了几种引气剂（AEA）和孔隙质量控制剂（AVC）在改善硬化混凝土气泡参数时所起的作用。

In this regard , several air entraining agents ( AEAs ) and air void controllers ( AVCs ) were investigated with respect to their effects to improve air void parameters in the paper .

聚丙烯纤维具有良好的阻裂性能，增强了硬化混凝土的能量吸收能力。

Polypropylene fiber reinforced concrete possesses good ductility and energy absorbability .

用射钉法检测硬化混凝土强度的初步试验

Preliminary Strength Test of Hardened Concrete Determined by Fastener

硬化混凝土中水泥用量的测定方法概述

Determination methods of cement content in hardened concrete

盐类环境中硬化混凝土界面区的组成和结构

The Composition and Structure of Interfacial Transition Zone in Harden Concrete Exposed to Salt Environment

硬化混凝土中气泡性质对抗冻性影响的试验研究

Experiment and Study of Influence of Property of Air-Bubbles in Hardened Concrete upon Frost Resistance of Concrete

本文介绍一种用于现场检测硬化混凝土强度的方法&射钉法。

This paper discusses a fastener method called penetration resistance method to determining strength of hardened concrete in situ .

温度变形和自生变形是硬化混凝土在初龄期两种最主要的变形。

Temperature deformation and autogenous deformation are the two major forms of deformation of hardening concrete in early age .

硬化混凝土由集料、界面过渡区和水泥浆体三个部分组成。

Hardened concrete consists of those three important components-aggregate , interfacial transition zone ( ITZ ) and cement paste .

电渗滤水在混凝土拌合物初凝前完成，由于模网的渗滤密实效应使硬化混凝土具有良好的孔结构。

Electro-osmosis filtering which completed before concrete initial setting and compact effect of Dipy formwork make concrete take on good hole structure .

研究了硬化混凝土性能指标与目前水泥性能指标的关系，结果表明，两者之间没有良好的相关关系。

After studying the hardened concrete properties index and cement properties index , and got that there were no significant relationship between them .

干燥缩水应变发生较慢，因为它是一个水透过硬化混凝土的迁移作用。

The drying shrinkage strain develops slowly , since it is a function of the migration of the water through the hardened concrete .

高性能化成为当代混凝土技术的发展趋势。混凝土的高性能包括新拌混凝土优异的工作性、硬化混凝土长期使用的力学性能及其耐久性能等三方面。

High-performance is the development tendency of modern concrete technology , including the good workability of fresh concrete and the mechanics and durability of hardened concrete .

首先，不合理使用脱模剂是造成硬化混凝土结构表面蜂窝麻面的主要原因。

First of all , the irrational use of release agent is a concrete structure caused by hardening the surface of the main reasons for cellular surface Ma .

如果再加上振捣不合理，大气泡不能完全排出，肯定会给硬化混凝土结构表面造成蜂窝麻面。

If the unreasonable vibration , large bubbles can not be completely discharged , would certainly have resulted in hardening the surface of concrete structure surface cellular Ma .

本文论述了引气剂的研究和应用现状、作用机理，并重点探讨了引气剂对新拌混凝土和硬化混凝土性能的影响。

Research and application actuality , action mechanism of air-entraining agent were discussed , and we pay more attention to the effect of air-entraining on new and hardened concrete .

本文还针对受冻条件下，不同配合比的硬化混凝土的冻胀应力和温度应力进行了研究，探讨了硬化混凝土的冻胀应力和温度应力与混凝土受冻损伤之间的关系。

The paper studied the frost-heave stress and thermal stress of hardening concrete with different mixing proportions cured for 28d under freezing condition , then discussed the relation of them and the damage of frozen concrete .

结果表明，硬化混凝土抗压强度、劈裂强度受水灰比较受骨料体积的影响大，而且随着水泥用量的增加，水灰比对硬化混凝土抗压强度的影响减小。

The results show that the water-cement ratio have larger influence on hardened concrete compressive strength and splitting tensile strength , and with the increase of cement content , water-cement ratio has less impact on compressive strength of hardened concrete .

它不仅能够大量减少混凝土拌和用水量，保证新拌混凝土在运输和施工过程始终保持良好的和易性，而且能使硬化混凝土具有良好的强度、抗渗、抗冻、抗腐蚀性能的混凝土外加剂。

The HPC admixtures not only can reduce the mixing water content in concrete and keep fresh concrete good workable during transport and construct procedure , but also ensure concrete harden concrete having well properties of strength , impermeability , frost-resistant , corrosion resistant .

采用压汞法测定了硬化混凝土水泥石的孔结构体系参数，包括总孔隙率、最可几孔径及平均半径等，探讨了孔结构与混凝土抗冻性、抗氯离子扩散系数及力学性能的关系。

Using mercury intrusion method to measure the parameter of limestone pore structure system , including total porosity , most probable aperture , mean radius and so on , and discussing the relationship between pore structure and concrete frost resistance , anti-chloride ion diffusion , mechanical performance .

本文针对交通部西部交通项目水泥混凝土抗冻融耐久性能研究中高速路面混凝土滑模施工过程中的塌边和麻面以及硬化混凝土收缩等现象展开研究。

Edge collapse , honeycomb and surface voids in the slipform paving cement concrete and shrinkage of hardening concrete used in highways are studied in this paper , which is a part of western traffic project , frost resistance of cement concrete , supported by traffic ministry of China .

用于未硬化废弃混凝土循环利用的外加剂

Additive for circulating utilization of unhardened waste concrete

LTS&1型增密硅灰泵送混凝土添加剂能显著地改善泵送混凝土可泵性，同时也明显地提高硬化后混凝土的均质性和强度等性质。

LTS-1 replenishment of pumping concrete of densitied silica fume can markedly improve the pumpability of pumping concrete and obviously increase the quality and strength of hardened concrete .

基于Prager硬化的钢管混凝土非线性梁单元

Nonlinear beam element for concrete filled steel tube based on Prager 's hardening law

导杆：（两个选择）淬硬钢的硬度60-65钢筋混凝土，使用寿命长，硬化不锈钢钢筋混凝土50-55硬度，耐腐蚀精密研磨和抛光15u有效值顺利循环，低分离。

Guide Rods : ( Two Choices ) Hardened Steel hardness Rc60-65 , long life Hardened Stainless Steel hardness Rc50-55 , corrosion resistant precision ground & polished15u RMS smooth cycling , low breakaway .

评价了变化的环境条件对新拌和硬化的高强混凝土性能的影响。

The effect of varying environmental conditions in the time of casting and curing on the properties of fresh and hardened high strength concrete ( HSC ) was evaluated .