Concrete setting timecuring fresh concretebridge deck crackingSetting of concrete material is defined as the transitional period between states of true fluidity and true rigidity. Initial and final setting times are measured in the laboratory on the mortar sieved from the mix in a controlled ...
Setting time of the concrete was found to be an important criterion to determine the length of the delay periods. Introduction Steam curing is widely used in the production of precast concrete members because it accelerates the rate of strength development. Some precast concrete plants apply steam ...
This paper presents a systemic response analysis of the final setting time of concrete based on initial setting time and cement replacement with bagasse ash. The response coefficient was evaluated to ascertain the viability and reliability of the final setting time dependence on the considered input ...
aBy adjusting the dosage ,setting times of fresh concrete can be extended ,giving an open-time typically in the range of 4 to 8 hours ,but can be extended up to 2 days if required. 通过调整剂量,设置新鲜的混凝土的时期是延长的,典型地给打开时间在4个到8个小时范围内,但可以如果必须被延伸2...
6.Accelerator is a kind of additive to regulate setting time and hardening speed of concrete or mortar, of which many products are available.速凝剂是调节混凝土(或砂浆)凝结时间和硬化速度的外加剂,品种较多。 7.Standard test method for water requirement of normal consistency setting time and soundne...
In this study, we examine a method for estimating the setting time of concrete containing super retarding agent (SRA) under various curing temperatures. To estimate the setting time, the equivalent age method using the apparent activation energy (a), proposed by Pinto et al., is applied. Incre...
In this paper, a test method for setting time of field concrete is discussed and is compared with the corresponding method for concrete specified in GB/T50080 -2002. It is concluded that if the ambient temperature is close to the standard temperature in GB/T50080 - 2002, then the setting ...
The quantitative relationships between the setting time of concrete and the electrical resistivity critical points were developed. The equations can be used to estimate the setting times of concrete as an alternative method. 展开 关键词: concrete penetration resistance measurement electrical resistivity ...
美 英 un.混凝土凝固 英汉 un. 1. 混凝土凝固 例句 释义: 全部,混凝土凝固
The NELD-ST370 fully automatic concrete setting time tester is a fully automatic measuring equipment for measuring the setting time of concrete and mortar. This instrument adopts intelligent 3D motion, industrial control touch screen and other international, effective application development technologies. ...