Drying Shrinkage Test Set
STANDART: TS EN 1367–4, 12617–4, 12808-4; ASTM C151, C157, C227, C311, C341, C342, C441, C452, C490, C531, C596, C806, C878; BS 1881:5, 6073
LT-A0048/AS Analog Shrinkage Test Set
LT-A0048/DS Digital Shrinkage Test Set
LT-A0048 Length Comparator
LT-A0050 Three-Gang Mould
LT-A0050/1 Steel Insert
LT-A0051 Reference Rod
LT-G8000 Analog Dial Indicator
LT-G8009 Digital Dial Indicator
Drying Shrinkage Test Set is designed to determine the effect of aggregates on the drying shrinkage of concrete by accurately measuring length changes in concrete prism specimens. The system is available with analog or digital measurement options and includes a length comparator, 50 × 50 × 200 mm three-gang mould, steel inserts and a reference rod for controlled and repeatable measurements.
- Drying Shrinkage Testing: Determines the effect of aggregates on concrete drying shrinkage.
- Precise Length Measurement: Monitors dimensional changes occurring in prism specimens.
- Analog Model: LT-A0048/AS is supplied with an analog measurement system.
- Digital Model: LT-A0048/DS provides higher-resolution digital measurements.
- Three-Gang Mould: Includes a 50 × 50 × 200 mm prism mould.
- Steel Inserts: Provide consistent measuring points at the ends of the specimens.
- Reference Rod: 205 mm reference rod supports comparator verification before measurements.
- Analog Dial Indicator: 10 mm range with 0.01 mm resolution.
- Digital Dial Indicator: 12.7 mm range with 0.001 mm resolution.
- Primary Standard: EN 1367-4 for determination of aggregate influence on concrete drying shrinkage.
| Product Code | Product Name | Dimensions (cm) | Weight (kg) |
| LT-A0048/AS | Analog Shrinkage Test Set | — | — |
| LT-A0048/DS | Digital Shrinkage Test Set | — | — |
| LT-A0048 | Length Comparator | 18 × 18 × 45 | 6 |
| LT-A0050 | Three-Gang Mould, 50 × 50 × 200 mm | 33 × 7 × 2 | 15 |
| LT-A0050/1 | Steel Insert, Pack of 10 | — | — |
| LT-A0051 | Reference Rod, 205 mm | 20 | — |
| LT-G8000 | Analog Dial Indicator, 10 × 0.01 mm | — | — |
| LT-G8009 | Digital Dial Indicator, 12.7 × 0.001 mm | — | — |
LT_BUZULMEDENEYSETI_
What Is a Drying Shrinkage Test Set?
The Drying Shrinkage Test determines the effect of aggregates on the dimensional change of concrete during drying. Concrete prism specimens are prepared under controlled conditions and their length changes are measured at specified stages.
Aggregate type can significantly influence concrete shrinkage. Therefore, this method allows laboratories to compare different aggregate sources under consistent test conditions. EN 1367-4:2008 defines the reference method for determining the influence of aggregates on the drying shrinkage of concrete. The standard is based primarily on concrete produced with aggregates having a maximum size of 20 mm.
Analog and Digital Measurement Options
LİYA Test offers two configurations.
The LT-A0048/AS Analog Shrinkage Test Set uses an analog dial indicator. The analog indicator provides a 10 mm measuring range with 0.01 mm resolution.
The LT-A0048/DS Digital Shrinkage Test Set uses a digital indicator with a 12.7 mm measuring range and 0.001 mm resolution. This option is suitable when finer dimensional changes need to be monitored.
Both systems use the same basic specimen preparation and length comparison arrangement.
Three-Gang 50 × 50 × 200 mm Mould
The set includes a three-gang mould for 50 × 50 × 200 mm prism specimens.
Producing three specimens from the same concrete batch makes it easier to compare results obtained under equivalent conditions. Steel inserts are positioned at the specimen ends to create repeatable reference points for subsequent measurements.
After casting and the required initial conditioning, the specimens can be removed from the mould and transferred to the specified curing and drying conditions.
Length Comparator and Reference Rod
The Length Comparator holds the specimen in a consistent position during measurement. The operator places each prism between the measuring contacts and records the indicator reading.
A 205 mm reference rod is used to check the comparator before a measurement series. This reference helps establish a consistent starting point and reduces errors caused by changes in the measuring system.
The LT-A0048 Length Comparator has overall dimensions of 18 × 18 × 45 cm and weighs approximately 6 kg.
How Is Drying Shrinkage Measured?
First, concrete is prepared using the aggregate to be evaluated. The mixture is placed into the three-gang mould and compacted according to the applicable procedure.
After the required curing stage, an initial length reading is taken.
The specimens are then stored under the drying conditions defined by the relevant method. Measurements are repeated at the required intervals.
The difference between the initial and subsequent readings represents the dimensional change of the specimen. Laboratories use these measurements to calculate and compare the drying shrinkage associated with different aggregates.
Why Is Aggregate Shrinkage Important?
Aggregates generally restrain the shrinkage of the cement paste. However, different aggregate types can produce substantially different concrete shrinkage behaviour.
Excessive dimensional change can contribute to cracking and serviceability problems in concrete elements. For this reason, understanding the influence of an aggregate source is valuable when evaluating materials for structural concrete.
EN 1367-4 Drying Shrinkage Testing
EN 1367-4:2008 remains the current European reference method for determining the effect of aggregates on the drying shrinkage of concrete. The method is intended primarily for type testing and cases of dispute, although other procedures may be used for production control when a suitable relationship with the reference method has been established.
The Drying Shrinkage Test Set combines controlled specimen preparation, accurate length measurement and analog or digital indicator options. As a result, laboratories can monitor dimensional changes in concrete specimens under repeatable test conditions.
