Hunan Luzhi New Material Technology Co., Ltd.

LZ-L1 Prestressed Duct Grouting Material

LZ-L1 prestressed duct grouting material is a non-shrinkage cement-based grout with unique two-stage shrinkage-compensation performance. LZ-L1 is a chloride-free, non-metallic material that achieves shrinkage compensation in both its plastic and hardened stages through the addition of specialized components designed to reduce shrinkage as well as enhance workability and water reduction.

Category:

Concrete admixture materials

Product accessories:

Product Description

Product Introduction

LZ-L1 prestressed duct grouting material is a non-shrinkage cement-based grout with unique two-stage shrinkage-compensation properties. It is a chloride-free, non-metallic material specifically formulated by incorporating special components that reduce shrinkage as well as enhance plasticity and water reduction, ensuring effective compensation of shrinkage both in the plastic and hardened stages.

Product Advantages

1. Factory-prepackaged products manufactured strictly according to ISO 9001 quality control standards, ensuring consistent product performance;

2. Contains no aluminum powder or any components that produce hydrogen, carbon dioxide, or oxygen, and the inclusion of silica fume further enhances its low-permeability properties.

3. Simply add water—convenient to use—and avoid issues like substandard paste caused by on-site worker errors or inaccurate mixing ratios.

4. Zero bleeding, no shrinkage, and excellent freeze-thaw resistance;

Parameter metrics

Serial Number	Project		Standard indicators	Detection value	Judgment result
1	Chloride ion content, %		≤0.05	0.032	Qualified
2	Coagulation time, h	Initial setting	3-12	8h15min	Qualified
2	Coagulation time, h	Final setting	≤24	10h25min	Qualified
3	Flowability, s	Initial Flowability	≤30	16	Qualified
3	Flowability, s	30-minute fluidity	≤30	17	Qualified
4	Flexural strength, MPa	1d	≥4.0	4.5	Qualified
		3d	≥6.5	9.4	Qualified
		28d	≥10.0	11.6	Qualified
5	Compressive strength, MPa	1d	≥15.0	17.9	Qualified
		3d	≥40.0	50.8	Qualified
		28d	≥70.0	79.2	Qualified
6	Free water bleeding rate, %	3h	0	0	Qualified
6	Free water bleeding rate, %	24h	0	0	Qualified
7	Capillary water absorption rate (4h), %		0	0	Qualified
8	Free expansion rate (3h), %		0.0 to +2.0	0.12	Qualified
9	Pressure-induced water permeability, %	0.14 MPa, 5 min	≤1.0	0.5	Qualified
		0.22 MPa, 5 min		0.6	Qualified
		0.36 MPa, 5 min		0.8	Qualified
10	Vertical expansion rate, %	1d	≥0	0.01	Qualified
10	Vertical expansion rate, %	28d	0 to +2.0	0.09	Qualified
11	Chloride-ion permeation-resistant, Type C, 28 days		≤1500	1174	Qualified
12	Accelerated corrosion time, h, 28 days		≥1500	1700	Qualified