PROSTAR HIGH SOUNDLESS CRACKING AGENT（PROSTAR SCA） 

I. INTRODUCTION

PROSTAR, a Soundless Cracking Agent is a kind of high expansive powdery material, which has been formulated by calcinating and grinding the oxides like Ca, Si, Al, etc.  PROSTAR HSCA(HSCA)mixed with water will turn into a pulpous state, and after being filled into the drill holes for a moment, it can crack the concrete constructions and rocks without vibration, noise and toxic gases.     

“PROSTAR” could safely demolish various kinds of concrete and quarried marble and granite. SCA becomes very popular in many countries, and deeply welcomed by our customers.

II. ADVANTAGES

◎      No flammability nor explosiveness. Do not belong to dangerous cargo.Safely stored and conveniently transported.

◎      Static state demolition, no ground vibration, noise, dust,nor gas.

III. TECHNICAL PROPERTIES AND INDEX

TYPE	TEMPERATURE (℃)	EXPANSIVE PRESSURE (MPa)
		8Hrs	24Hrs	48Hrs
PROSTAR SCA-Ⅰ	35±5	≥30	≥55	≥80
PROSTAR SCA-II	25±5	≥20	≥45	≥60
PROSTAR SCA-III	10±5	≥10	≥25	≥40
PROSTAR SCA-P	0±5	≥10	≥20	≥35
PROSTAR SCA-H	50±5	≥40	≥60	≥90

IV. APPLICATION AND CHARACTERISTICS

“PROSTAT” can be used in an almost unlimited range of applications. It's particularly used for breaking, cutting or demolishing stones, concrete and reinforced concrete and the yield has been increased by 2-3 times . It is ideal for use in situations where surrounding buildings or other structures would be damaged by flying debris or vibration. It maximizes production time, product output and therefore profits, in quarrying and mining as it avoids waste of valuable stone.

V. USAGE METHOD

  (1) Preparation: first of all, the Hole Diameter, the hole distance and the hole depth should be designed on the basis of material, composition, shape and requirement of the objects expecting to be cracked. the following is the conventional cracking design parameter.

BOJECTS	Parameter of holes			HSCA quantities (kg／m3)
	aperture (mm)	Hole distance(cm)	Hole depth
Soft Rock	30～50	30～50	H	8～10
Middele Hard Rock	30～50	30～50	105%H	10～15
Rock Cutting	30～40	20～50	90%H	One side cutting5～8 Two sides cutting15～16
General Concept for Concrete	30～50	30～50	80%H	3～10
General Concept for Reinforced Concrete	30～50	15～30	H	15～25

      PS：H-heights

(2) Allowable range of hole diameter,allowable temperature range of rock or concrete, thetemperature of water to be used and temperature of HSCA. Outside concrete iron must be cutted before use HSCA

(3) Mixing：According to the propotion of HSCA, put approximately 28-35%water into container beforehand, and add HSCA. Wear RUBBER GLOVES while stirring, or use machine to stir. If the temperature is below5℃, 40℃  water is suitable.

(4) Filling：Clean the hole forehead, neither water nor materials are allowed. HSCA  can be poured dirctly intothe hole, or use the coking gun or groutingpump. Enough quantities for each hole, but do not need to jam the hole. For a horizontal hole, the hole can be easily plugged with HSCA as it reaches a clay like consistancy as it starts setting up. A slight slope makes their use much easier.

(5) Protection: Spring, Summer, Autumn do not needed. In the winder it should be covered by mat.

VI．Cautions

(1)   The main component of HSCA is CALCIUM HYDROXIDE(PH≥14). Wear rubber gloves while work with it. Rinse with water, when any portion of the skin comes in contact with HSCA.

(2)    Pour the mixture of HSCA into the holes within 10 minutes, otherwise fluidity and fragmentation will be reduced, and it may be blow out of the hole due to the high temperature.

(3)    DO NOT look directly into any holes while filling them. Wear PROTECTIVE GLASSES while working with it in case the materail blows out of the hole and hurts workers’ eyes. Rinse with water when eyes come in contact with HSCA, or go to hospital nearby.

(4)    Read INSTRUCTION carefully before use our products, and take protective measur as much as possible, in case anyone gets hurt. Connect us when anything is not clear. 

 VII．CONTIANER AND STORAGE

HSCA is packed in 4 anti-moisture plastic bags of 5kg(11 lb) each. Keep in a dry warehouse etc. HSCA so stored can be effectively use for aabout 1year. If the bag is opened please use HSCA as soon as possible.