Description

YL-08NP is a water reducing, highly effective superplasticizer with a set retarding effect for concrete in hot temperature which delays concrete setting time. It has also high range water reducing for promoting high early and ultimate strengths of concrete.

YL-08NP is naphthalene-based superplasticizer compounded by some of high-performance retarder, stabilizer and reinforcing admixtures etc.

It complies with ASTM C 494 Type G, GB8076-2008 and GB50119-2003.

Uses

Ø YL-08NP is ideal concrete admixtures for preparing high-performance and high-strength concrete, mass concrete and long-distance transport concrete etc.

Ø It is suitable for working condition under temperature 5-40 ℃.

Ø Not suitable for being solely applied in the steam curing concrete.

Ø Test before applied in anhydrite, dross or similar industrial waste cement.

Advantage

Ø Has a high efficiency water-reducing, retarding in the initial setting and early strength in final setting, late-enhanced, less slump loss etc. which is extremely beneficial to the transport and to pouring of concrete.

Ø Increases initial workability. High ultimate strengths.

Ø The concrete of compressive strength, flexural, tensile, impermeability and durability are significantly improved and enhanced.

Ø The concrete setting time prolong 1-3h, it can also be adjusted according to the user's demand. It has not affected the strength growth of concrete at different time.

Dosage

0.5-1.2% by weight of cement. Exact dosage rates are dependent on the type of effect sought, quality of cement and aggregates, water/cement ratio and ambient temperature. Therefore, in many cases it is advisable to carry out trial mixes.Using during mixing and after-mixing method and properly prolong stirring time to assure even.

Specifications

Item	Norm	Item	Norm
Appearance	Lark powder	Fluidity of cement	230mm
Fineness (0.315mm remains) %	≤12%	Chlorine content	Non
PH value	7-9	Moisture %	8.0 max

Technical Data Sheet

Items	Criteria	Test Results (C×1%)
Water Reducing Rate (%)	≥14	24.4
Ratio of Bleeding Rate (%)	≤100	32.8
Air Content (%)	<4.5	2.4
Setting Time Difference (min)	Initial	>+90	+200
Compressive Strength Ratio (%)	3 days	--	--
7 days	≥125	135
28 days	≥120	132
Shrinkage (%)	28 days	≤135	109
Alkali Content (%)	-----	2.35
Alkali Content per m3 (kg)	≤1.0	0.1
Chloride Ion Content	-----	0.09
Chloride Ion Content per m3(kg)	Prestress Concrete	<0.02	0.004
Reinforced Concrete	0.02~0.20
Plain Concrete	0.20~0.60
Ammonia Content (%)	≤0.1	0
Radiation	Internal Exposure Index, IRa	≤1.0	0.13
External Exposure , Index, IY	≤1.0	0.45

Package, Storage & Shelf Life

For powder: Woven plastic bag with film liner. Net weight: 25kg +/- 0.2 kg.

It should be stored in a dedicated warehouse that is well-ventilated and dry and keep away from moisture.

Shelf Life: Minimum 12 months. After the expiration date, it can be used if testing results is qualified.