Product Details

Product Description

ST-01D-type expansive agent for concrete is a chemical admixtures added in cement when the cement setting and hardening, along with volume expansion, contraction and tension compensates produce prestressed reinforced concrete to fill the gap and the full effect. This product is incorporated in concrete, can generate reactive cement combined with water and the expansion crystalline hydrates --- ettringite (C3A.3CASO4.32H2O), the concrete in the early and mid produce moderate expansion, constraints in steel and ortho next, it should be expanded into pressure, this pressure can be substantially offset by the tensile stress generated when the concrete shrinkage, thereby preventing or reducing shrinkage and cracking of concrete, and concrete densification, which can also improve the anti-cracking concrete infiltration capability to meet the structural waterproof effect. Thus becoming one of the preparation of structural waterproof and ideal material for high performance concrete.

Specification as below:

standard		JC476-2001concrete expansion				Volume	8%
Test item					unit of measurement	specification	result
chemical composition	Mgo				%	≤5.0	4.3
	Moisture				%	≤3.0	1.2
	Total Alkalinity content				%	≤0.75	0.25
	Chloride content				%	≤0.05	0.02
Physical properties	Degree of fineness		The specific surface area		m2/kg	≥250	380
Physical properties	Degree of fineness		sieve margin in Square hole of 0.08mm		%	≤12.0	8.5
	Degree of fineness		sieve margin in Square hole of 1.25mm		%	≤0.5	0
	Setting time		Start setting		min	≥0.45	4h58min
	Setting time		Finally setting		min	≤10	5h52min
	Limit expansion		Water	7d	%	≥0.025	0.033
				28d	%	≤0.10	0.048
			air	21d	%	≥-0.020	0.004
	Compressive strength		7d		Mpa	≥25	51.0
	Compressive strength		28d		Mpa	≥45	62.2
	Flexural strength		7d		Mpa	≥4.5	7.6
	Flexural strength		28d		Mpa	≥6.5	9.1
	Water Reduction				%	≥15	23

Packaging & Shipping

1, Packing: 50 kg plastic woven sack bag, net weight 50kg, it can also be customized according to customer requirements.

2, Storage: This product should be stored on wooden pallets, storage keep dry dedicated warehouse or fixed place, Moisture is strictly prohibited .product shelf life of six months, expired product should be re concrete physical performance test, only data after passing allow to use.

Our Services

1. We can design and produce products based on the client's requirements.

2. FOB Chinese port, CIF, CFR and EXW trade terms are available for you. We will give youmost competitive price.

3. Our factory is located in hebei, It is easy for youto visit our factory.

4. We believe to supply you our best services.

5.Reply your inquiry in 8working hours.

6.Experienced staffs answer all your questions in fluent English

7.Customized desigh is available,OEM is welcomed.

8.Special discount and protection of sales area provided to our distributor

FAQ

1. Which port do you choose for FOB ?

Answer: FOB tianjin Port.