Chemical Anchor

Chemical anchors are a special type of fastener designed for installation in hollow and porous materials. Unlike other types of anchors, they provide secure fixation in the material through adhesive forces rather than mechanical expansion and friction. Such a product consists of a capsule with a special adhesive compound and a metal fastening insert in the form of a stud or threaded rod.

A chemical anchor is also called a liquid anchor or bonded anchor due to its particular method of use.

Purpose and operating principle

A chemical anchor is installed in a pre-drilled hole in the material; the hole diameter should exceed the diameter of the metal fastening element by 2-3 mm. The hole is carefully cleaned of dust, and the adhesive compound is placed inside it. It fills the pores of the base material, and the fastening element is then inserted. Once the compound has fully cured, it provides a strong bond between the material and the fastener, making removal of the fastener without damaging the material impossible.

The adhesive compound of a chemical anchor usually consists of several main components: a special synthetic resin and a hardener, which react with each other on contact with oxygen. This results in a strong bond that fills and binds all cavities and voids in the base material. Full curing of the compound can take anywhere from several hours to a full day; only after this process is complete does the fastener become truly strong.

Main types of chemical anchors

Depending on the method of application and the working compound used, anchors are generally divided into two main types:

• Capsule type. These are made in the form of a capsule (ampoule) filled with adhesive compound. The capsule is placed in the hole, and then the fastening element is inserted into it. When the capsule breaks, the adhesive mixture comes into contact with oxygen, and the reaction between the resin and the hardener forms a strong bond. This type of anchor is typically used with solid materials — it can be used for installation in holes in brickwork or concrete.
• Injection type. The anchor is made in the form of a cartridge with two compartments, and a special dispensing gun is used for installation. This type of anchor is convenient for use with hollow and porous materials: a plastic sleeve is inserted into the hole to prevent excessive spreading of the compound. The adhesive compound is placed inside it, and then the fastener is inserted. Once the resin has cured, the fastener is firmly fixed in the material.

Injection-type anchors solve the problem of attaching various structures to walls made of low-density porous materials. They can be used for fixing into cellular concrete, expanded clay concrete, aerated concrete, porous brick masonry, as well as for installation in limestone or sandstone blocks.

Applications in construction

Chemical anchors are used to solve the following construction tasks:

• Installation of rebar elements for critical structures. Thanks to the high bond strength and reliable fixation, they can be used in the construction of bridges, tunnels, overpasses, stairs and other heavy structures.
• Attaching various building structures to walls and floor slabs made of hollow or solid materials.
• Installation of balconies, gates, roofing, and other tasks in private housing construction. Other types of anchors cannot be installed in hollow materials, making chemical fasteners the most effective solution.
• Mounting various equipment inside and outside a building. Such fasteners are used for fixing built-in wall-hung sanitary fixtures, satellite dishes, light fittings, and many other types of equipment.
• Installation of structures that will subsequently be permanently exposed to moisture. The compounds used in chemical anchors do not break down under moisture exposure, so this type of fastener guarantees reliable fixation.

The resulting bond withstands all types of loads, including dynamic, static and vibrational external effects. It also has high tensile strength, and the anchor reliably resists pull-out of the fastening element. The bond becomes so strong that removal is only possible through partial destruction of the base material.

An important advantage of chemical anchors compared to expansion anchors and other types is the ability to install them close to the edge of a structure or at a short distance from one another. Their installation does not cause chips or cracks on the surface of the material, allowing minimal spacing between fixing points. If various structures need to be mounted in porous brick or other low load-bearing materials, this is the most reliable solution.

Terms of purchase from FLOK

FLOK supplies chemical anchors of all main types: a wide range of products is available. Orders can be placed in wholesale quantities — both small and large wholesale lots are available, as well as ongoing cooperation. Product quality is verified.

To place an order, get expert advice by phone.

Tuote	Vaarna	Poran	kpl/pcs
KEM 8	M 8	10	10/500
KEM 10	M 10	12	10/500
KEM 12	M 12	14	10/200
KEM 16	M 16	18	10/200
KEM 20	M 20	25	6/60
KEM 24	M 24	28	6/60
KEM 30	M 30	35	6/60

Base material temperature, °C	Setting time, min	Load after, min
25	3	30
15	6	36
5	12	42
-5	50	90

Anchor diameter, mm	Hole diameter, mm	Standard anchoring depth, mm	Max. load, kN*		Design load, kN*		Recommended load, kN*		Recommended edge distance, mm		Recommended anchor spacing, mm
			pull-out	shear	pull-out	shear	pull-out	shear	pull-out	shear
M8	10	80	22.2	10.1	10.2	8.1	7.3	5.8	80	100	100
M10	12	90	36.6	15.6	18.1	12.5	13.0	8.9	90	130	130
M12	14	110	50.5	23.1	24.7	18.5	17.7	13.2	110	150	140
M16	18	125	79.0	41.8	38.8	33.5	27.8	23.9	130	170	170
M20	24	170	101.3	66.8	49.7	53.4	35.5	38.2	150	190	210
M24	28	210	136.6	95.7	64.3	76.6	46.0	54.7	190	240	240
M30	35	280	237.1	123.0	115.3	97.0	82.4	69.3	300	350	350

Metal brush for cleaning holes

Hand pump for blowing out holes

Metal mesh sleeves for hollow substrates

Plastic mesh sleeve for hollow substrates

Dispensing gun for chemical anchor for concrete

Mixing nozzle

Zinc-plated threaded anchor stud

Base material temperature, °C	Setting time	Load after
+40	1.5 min	15 min
+30	4 min	25 min
+20	6 min	45 min
+10	15 min	1 h 20 min
0	45 min	7 h
-5	1 h 30 min	14 h
-10	1 h 30 min	24 h

Stud size	Nut width across flats, mm	Hole diameter in the fixture material, mm	Hole diameter in the base material, mm	Min. hole depth, mm	Anchoring depth, mm	Theoretical resin consumption, ml
M8	13	9	10	80	80	5
M10	17	12	12	90	90	7
M12	19	14	14	110	110	12
M16	24	18	18	125	125	22
M20	30	22	24	170	170	52
M24	36	26	28	210	210	87
M30	46	32	35	280	280	180

Stud size	Stud material	Min. base material thickness, mm	Anchoring depth, mm	Tightening torque, Nm	Allowable loads, kN in compression zone of C20/25 concrete		Allowable loads, kN in tension zone of C20/25 concrete
					Pull-out	Shear	Pull-out	Shear
M8	steel 5.8	110	80	10	8.6	5.1	4.3	3.3
M10	steel 5.8	120	90	20	13.5	8.6	6.2	5.6
M12	steel 5.8	140	110	40	19.7	12.0	9.1	7.5
M16	steel 5.8	161	125	80	28.0	22.3	13.7	12.3
M20	steel 5.8	218	170	120	44.4	34.9	23.3	18.0
M24	steel 5.8	266	210	160	61.0	50.3	34.6	23.7
M30	steel 5.8	350	280	200	93.9	65.5	66.9	37.8

Rebar diameter, mm	Rebar class	Hole diameter, mm	Anchoring depth, mm	Theoretical resin consumption, ml	Allowable loads, kN in compression zone of C20/25 concrete		Allowable loads, kN in tension zone of C20/25 concrete
					Pull-out	Shear	Pull-out	Shear
8	A500HV	12	80	6	9.6	6.7	4.3	3.3
10	A500HV	14	90	11	13.5	10.5	6.2	5.6
12	A500HV	16	110	21	19.7	14.8	9.1	7.5
14	A500HV	18	115	34	24.1	20.0	11.0	9.9
16	A500HV	20	125	46	28.0	26.2	13.7	12.3
20	A500HV	24	170	83	44.4	41.0	23.3	18.0
25	A500HV	32	210	134	61.0	56.6	36.0	25.7
28	A500HV	35	250	278	79.2	62.5	56.5	33.6
32	A500HV	40	280	567	93.9	69.3	66.9	41.1

Type	Image
ISL mixer
ISL EXT extension, 250 mm
Manual dispensing gun IPU 345
Pump IPUM 280 mm
Metal brush for cleaning holes Ø 10x300
Metal brush for cleaning holes Ø 13x300	—//—
Metal brush for cleaning holes Ø 18x300	—//—
Metal brush for cleaning holes Ø 28x300	—//—
Cap TT 24
Cap TT 28	—//—
Cap TT 32	—//—
Cap TT 35	—//—
Cap TT 38	—//—

Base material temperature, °C	Setting time	Load after
+35	2 min	20 min
+30	4 min	25 min
+20	6 min	45 min
+10	15 min	1 h 20 min
+5	25 min	2 hours
0	45 min	3 hours
-5	1 h 30 min	6 hours

Stud size	Nut width across flats, mm	Hole diameter in the fixture material, mm	Hole diameter in the base material, mm	Min. hole depth, mm	Anchoring depth, mm	Theoretical consumption of chemical anchor, ml
M8	13	9	10	80	80	5
M10	17	12	12	90	90	7
M12	19	14	14	110	110	12
M16	24	18	18	125	125	22
M20	30	22	24	170	170	52
M24	36	26	28	210	210	87

Stud size	Nut width across flats, mm	Hole diameter in the fixture material, mm	Hole diameter in the base material, mm	Min. hole depth, mm	Anchoring depth, mm	Theoretical consumption of chemical anchor, ml
M8	13	9	16	90	85	18
M10	17	12	16	90	85	18
M12	19	14	20	90	85	27
M16	24	18	20	90	85	27

Stud size	Stud material	Min. base material thickness, mm	Anchoring depth, mm	Tightening torque, Nm	Allowable loads, kN
					Pull-out	Shear
M8	steel 5.8	110	80	10	6.3	5.1
M8	A4-70	110	80	10	6.3	6.0
M10	steel 5.8	120	90	20	13.8	8.6
M10	A4-70	120	90	20	13.8	9.2
M12	steel 5.8	140	110	40	13.9	12.0
M12	A4-70	140	110	40	13.9	13.7
M16	steel 5.8	160	125	60	19.8	22.0
M16	A4-70	160	125	60	19.8	25.2
M20	steel 5.8	215	170	120	29.8	34.9
M20	A4-70	215	170	120	29.8	39.4
M24	steel 5.8	260	210	150	37.7	50.3
M24	A4-70	260	210	150	37.7	56.8

Stud size	Stud material	Anchoring depth, mm	Allowable loads, kN (aerated concrete 400 kg/m³)	Allowable loads, kN (aerated concrete 450 kg/m³)	Allowable loads, kN (aerated concrete 500 kg/m³)
			Pull-out	Pull-out	Pull-out
M8	steel 5.8	80	0.6	0.7	0.7
M10	steel 5.8	80	0.7	1.0	1.1
M12	steel 5.8	80	0.95	1.2	1.3

Stud size	Stud material	Anchoring depth, mm	Allowable loads, kN
			Pull-out
M8	steel 5.8	85	2.1
M10	steel 5.8	85	2.1
M12	steel 5.8	85	2.1
M16	steel 5.8	85	2.1

Type	Image
ISL mixer
ISL EXT extension, 250 mm
IPU 150/300 mechanical dispenser gun for chemical anchor
IOV M6-M8 (12x50) plastic mesh sleeve for chemical anchor
IOV M8-M10 (16x85) plastic mesh sleeve	—//—
IOV M8-M10 (16x135) plastic mesh sleeve	—//—
IOV M12-M16 (20x85) plastic mesh sleeve	—//—
IOV-M M6-M8 (12x1000) metal mesh sleeve for chemical anchor
IOV-M M10 (16x1000) metal mesh sleeve	—//—
IOV-M M12-M16 (22x1000) metal mesh sleeve	—//—
ISH M6x48 zinc-plated metal sleeve with internal thread
ISH M8x80 zinc-plated metal sleeve with internal thread	—//—
ISH M10x80 zinc-plated metal sleeve with internal thread	—//—
ISH M12x80 zinc-plated metal sleeve with internal thread	—//—
Pump for blowing out holes IPUM 280 mm
Metal brush for cleaning holes Ø 10x300
Metal brush for cleaning holes Ø 13x300	—//—
Metal brush for cleaning holes Ø 18x300	—//—
Metal brush for cleaning holes Ø 28x300	—//—

Base material temperature, °C	Setting time, min	Load after, min
25	3	30
15	6	36
5	12	42
-5	50	90

Anchor diameter, mm	Hole diameter, mm	Standard anchoring depth, mm	Max. load, kN*		Design load, kN*		Recommended load, kN*		Recommended edge distance, mm		Recommended anchor spacing, mm
			pull-out	shear	pull-out	shear	pull-out	shear	pull-out	shear
M8	10	80	20.2	10.1	8.1	8.1	5.8	5.8	80	100	100
M10	12	90	28.5	15.6	11.4	12.5	8.1	8.9	90	130	130
M12	14	110	40.5	23.1	16.2	18.5	11.6	13.2	110	150	140
M16	18	125	69.2	41.8	27.7	33.5	19.8	23.9	130	170	170
M20	24	170	89.9	66.8	40.7	53.4	29.1	38.2	150	190	210
M24	28	210	112.6	95.7	46.3	76.6	33.1	54.7	190	240	240
M30	35	280		123.0		97.0		69.3	300	350	350

Metal brush for cleaning holes

Hand pump for blowing out holes

Metal mesh sleeves for chemical anchor

Plastic mesh sleeve for chemical anchor

Dispenser gun for injection mortar (chemical anchor)

Mixing nozzle

Zinc-plated threaded anchor stud

Dimensions and technical specifications of KEM-VE Sormat chemical anchor capsules

SKU	Size	Stud	Stud property class	Nut width across flats, mm	Drill diameter, mm	Hole depth and anchoring depth, mm	Min. base material thickness, mm	Nut tightening torque, Nm	Pack, pcs	Weight, kg/1000 pcs	Allowable loads, kN (compressed zone of C 20/25 concrete)
											Pull-out	Shear
72808	KEM-VE 8	M8	steel 5.8	13	10	80	110	10	10 / 500	8.2	7.9	5.1
72808	KEM-VE 8	M8	A4-70	13	10	80	110	10	10 / 500	8.2	7.9	5.9
72810	KEM-VE 10	M10	steel 5.8	17	12	90	120	20	10 / 500	11.5	11.9	8.0
72810	KEM-VE 10	M10	A4-70	17	12	90	120	20	10 / 500	11.5	11.9	9.2
72812	KEM-VE 12	M12	steel 5.8	19	14	110	140	40	10 / 200	18.0	15.9	12.0
72812	KEM-VE 12	M12	A4-70	19	14	110	140	40	10 / 200	18.0	15.9	13.3
72816	KEM-VE 16	M16	steel 5.8	24	18	125	160	80	10 / 200	32.0	19.8	22.3
72816	KEM-VE 16	M16	A4-70	24	18	125	160	80	10 / 200	32.0	19.8	25.2
72820	KEM-VE 20	M20	steel 5.8	30	25	170	220	120	6 / 60	107.0	29.8	34.9
72820	KEM-VE 20	M20	A4-70	30	25	170	220	120	6 / 60	107.0	29.8	39.4
72824	KEM-VE 24	M24	steel 5.8	36	28	210	260	180	6 / 60	148.0	35.7	50.3
72824	KEM-VE 24	M24	A4-70	36	28	210	260	180	6 / 60	148.0	35.7	56.8
72830	KEM-VE 30	M30	steel 5.8	46	35	280	350	300	6 / 30	374.7	59.0	80.1
72830	KEM-VE 30	M30	A4-70	46	35	280	350	300	6 / 30	374.7	59.0	42.1

Dimensions and installation parameters of threaded studs

Stud type	Stud size	Nut size across flats	Thickness of material being fastened, mm	Drill diameter, mm	Min. drilling (anchoring) depth, mm	Tightening torque, Nm	Allowable loads* kN (non-prestressed C 20/25 concrete)
							Pull-out	Shear
KEVA 8x110	M8	13	15	10	80	11	9.1	5.4
VKS 8x110	M8	13	20	10	80	11	9.1	5.4
VH 8x110	M8	13	20	10	80	11	9.1	5.4
KEVA 10x130	M10	17	20	12	90	22	11.4	8.6
VKS 10x130	M10	17	25	12	90	22	11.4	8.6
VH 10x130	M10	17	25	12	90	22	11.4	8.6
KEVA 12x160	M12	19	30	14	110	38	14.5	12.5
VKS 12x160	M12	19	35	14	110	38	14.5	12.5
VH 12x160	M12	19	35	14	110	38	14.5	12.5
KEVA 16x190	M16	24	40	18	125	95	20.3	23.3
VKS 16x190	M16	24	45	18	125	95	20.3	23.3
VH 16x190	M16	24	45	18	125	95	20.3	23.3
KEVA 20x260	M20	30	60	24	170	170	27.8	36.6
VKS 20x260	M20	30	70	24	170	170	27.8	36.6
VH 20x260	M20	30	70	24	170	170	27.8	36.6