缓凝剂

FGD脱硫灰渣及其用于水泥缓凝剂的研究

Research on Preparation for FGD Desulfurized Slag and It ` s Application as Cement Retarder

水泥缓凝剂&低粘度CMC

Cement Retarder & Low Viscosity CMC

SEM图像表明，掺超缓凝剂的水泥硬化结构更加致密。

SEM photographs indicate that the microstructure of hardening cement with super - retarding agent is more compact .

文章还分析了LC提高水泥石强度的机理，为选择高温缓凝剂提供了一定的依据。

This paper also analyzed the mechanism of LC raising the strength of cement .

油井水泥分散缓凝剂TD－lA

Dispersing / retarding agent td-1a for oil well cement

以FGD脱硫灰渣为缓凝剂的水泥及其混凝土的试验研究

Experimental Study of Cement and Concrete Mixed with FDG Desulfurized Slag as Set-Retard Admixture

方法利用XRD和SEM等微观手段，对掺入超缓凝剂水泥砂浆的缓凝性能进行了测试和表征。

The retarding properties of cement paste with the super-retarding agent have been characterized and analyzed by means of XRD and SEM .

超高温油井水泥缓凝剂PQ的室内研究

Laboratory study on oil well cement retardant PQ of ultra-high temperature tolerance

结果表明：石膏pH值、石膏细度和石膏品种不同，缓凝剂对石膏凝结时间和强度作用效果不同。

The results showed that for gypsum with different pH value , fineness , and variety , action effects of retarders on setting time and strength was also different .

通过对缓凝剂SA进行红外光谱分析，表明SA属于AMPS-TA二元共聚物。

IR analysis shows that SA is an AMPS-TA binary copolymer .

WHⅡ型超缓凝剂对混凝土耐久性能影响的试验研究

Effect of WH ⅱ Super Retarder on Durability of Concrete by Experiments

缓凝剂主要平抑水泥中C3S的水化，而这种平抑作用又受C3A的影响。

A retarding agent 's role is , in the main , to inhibit the hydration of C_3S in cement and in turn is constrained by C_3A .

使用Marsh筒法对分别掺磷石膏和天然二水石膏作缓凝剂的水泥与不同外加剂的相容性进行了研究。

The compatibility of different superplasticizers with cement that added phosphogypsum or natural gypsum as retarder was studied by means of Marsh Cone .

本文介绍用低粘度CMC作为水泥浆缓凝剂的室内试验和现场使用情况。

This paper introduces the results of laboratory experiment and field application hy using the low viscosity CMC as a retarder in cement slurry .

试验研究证明，SJ－H1型高效缓凝剂掺量少，缓凝效果强。

Tests proved that SJ-H1 high range retarding agent could be used in small content with good retarding effect .

以蔗糖为主要原料研制出一种超效缓凝剂（简称SRA）；

A new type of super retarder agent ( SRA ) was made from cane sugar ;

3对同一温度同一水灰比，缓凝剂增加0.2%，最佳测量时间延迟2～3h；

Optimal logging time delay 2 ~ 3 hours when cement retarder increases 0 2 % under the same temperature and same water cement ratio ;

本文介绍一种新型油井水泥外加剂&分散缓凝剂TD－lA。

This paper presents the results of laboratory evaluation and field tests in 3 wells of a bifunctional additive for oil well cement , dispersant / retarder TD-1A .

2对同一水灰比同一缓凝剂，温度每升高10℃，最佳测井时间缩短约2h；

Optimal logging time reduces about 2 hours when the temperature increases 10 ℃ under the conditions of the same water cement ratio and same cement retarder ;

本文采用电导法和酸度法研究了嘉华G级油井水泥浆及加有缓凝剂酒石酸时水泥的水化历程，并对酒石酸的缓凝机理进行了分析。

The hydration rate of Class G net oil-well cement slurry and the slurry with retarder tartaric acid is measured respectively by the methods of electrical conductance and acidity , and then the retardation mechanism of tartaric acid is discussed .

木质素磺酸盐经再次深度磺化改性后的缓凝剂PQ具有更好的缓凝效果，且能经受更高的温度（200℃）。

The retardant PQ which is further modified by deep sulfonating has better slow hardening effect and can stand higher temperature ( 200 ℃) .

但这些缓凝剂会延迟C3S的水化，从而也延迟水泥浆体强度的发展。

However , these retarders delays onset of C3S hydration and may therefore also delay strength evolution .

通过对水泥水化初期浆体中钙矾石生成量的测定、水泥浆体液相组成的分析及XRD，DTA，SEM分析，对这种新型缓凝剂的作用机理进行了系统研究。

The action mechanism of the retarder was studied by XRD , SEM , DTA with the measurements of ettringite formed and the analyses of the liquid composition of cement pastes at the initial hydration stage .

通过实时测试掺和不掺缓凝剂的石膏浆体的浊度，确定不同条件下石膏结晶的诱导期，并通过SEM照片，探讨了缓凝剂对石膏晶体形貌的影响。

The turbidity of fresh paste with or without retarder was measured by live test to determine the induction period of gypsum crystal formation under different conditions , and the effect of retarder on gypsum crystal appearance by SEM photo was discussed .

在120℃下，其水泥浆体系的稠化时间，用常用的缓凝剂可调整到337min，SPS对水泥浆其他性能无不良影响。

Thickening time can be adjusted to 337 min under 120 ℃ by the regular retarder . The SPS has been proved to have no side effects on cement slurry 's other properties .

研制了一种以无机聚合物（水玻璃）为速凝剂、以磷酸盐为缓凝剂配制而成的CWP水泥复合浆液。

This paper expresses a kind of CWP composite cement grout made up of water , cement , water glass as accelerant and phosphate as retarder .

本文研究的CWP水泥复合浆液含有水玻璃（速凝剂）和偏磷酸盐（缓凝剂）。

The CWP composite cement grout is made from cement , water , waterglass ( used as accelerator ) and metaphosphate ( used as retarder ) .

本文选用自制的分散剂F-2，有机缓凝剂，早强剂及激活剂进行了大量的MTC配方筛选。

In this paper , the self-made dispersant F-2 , organic slow dilution agent , early strength agent and activator are sieved by MTC composition .

为满足现场要求，必须加入相配伍的缓凝剂，并控制初、终凝时间在4～10h之内；

By the request of the field application the compatible retarder should be added and control the initial setting time in the scope of 4-10 h ;

油井水泥高温缓凝剂CH20L的实验研究

Experimental Study of CH20L & A High Temperature Oilwell Cement Retarder